{"id":32115,"date":"2024-12-24T10:52:53","date_gmt":"2024-12-24T10:52:53","guid":{"rendered":"https:\/\/aquaconsult.be\/?p=32115"},"modified":"2025-05-28T10:11:08","modified_gmt":"2025-05-28T10:11:08","slug":"saltpetre-on-wall","status":"publish","type":"post","link":"https:\/\/aquaconsult.be\/en\/news\/saltpetre-on-wall\/","title":{"rendered":"This is how to recognise saltpetre on your walls"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div data-parent=\"true\" class=\"vc_row row-container\" id=\"row-unique-0\"><div class=\"row-background background-element\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"background-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"background-inner\" style=\"background-image: url(https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur.jpg);background-repeat: no-repeat;background-position: center center;background-attachment: scroll;background-size: cover;\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"block-bg-overlay style-overlay_color-955664-bg\" style=\"opacity: 0.44;\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div><div class=\"row single-top-padding single-bottom-padding quad-h-padding full-width row-parent\" data-height-ratio=\"51\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-middle pos-left align_left column_parent col-lg-12 single-internal-gutter\"><div class=\"uncol style-spec style-dark\"  ><div class=\"uncoltable\"><div class=\"uncell\" ><div class=\"uncont no-block-padding col-custom-width\" style=\" max-width:72%;\" ><div class=\"vc_row row-internal row-container\"><div class=\"row row-child\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-middle pos-left align_left column_child col-lg-12 half-internal-gutter\"><div class=\"uncol style-spec style-dark\" ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h1 class=\"font-673431 fontsize-380714 font-weight-500 text-color-xsdn-color\" ><span>This is how to recognise saltpetre on your walls<\/span><\/h1><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\"  id=\"colorlinkwhite\"><p class=\"font-673431 fontsize-157814 fontheight-505120 font-weight-400 text-color-xsdn-color\" ><span>Saltpetre on the wall is a common but often overlooked culprit in homes with moisture problems. In this guide, you will discover what exactly nitric acid is, how to recognise it, and - more importantly - how to combat it effectively?<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"empty-space empty-quart\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-0\" data-row=\"script-row-unique-0\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-0\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row padding_mobiel_vocht row-container onepage-section\" data-label=\"wat-is-opstijgend-vocht\" data-name=\"wat-is-opstijgend-vocht\" id=\"row-unique-1\"><div class=\"row double-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left align_left_tablet align_left_mobile column_parent col-lg-12 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 fontheight-505120 font-weight-500 text-color-103889-color\" ><span>What is nitric acid?<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Have you ever had white, powdery stains on the walls of masonry or <a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/plastering\/\">plaster<\/a> seen? Chances are you have (had) to deal with nitric acid (also known as nitric rash). Nitric acid forms when moisture comes into contact with the wall. The chemicals present in the moisture then react with the components of your home's masonry and pointing, leading to this white deposit.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>So, although the white powder coating seems harmless, nitric acid on your wall usually indicates a deep-seated <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/\">moisture problem<\/a>. Something we would rather be poor than rich.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-1\" data-row=\"script-row-unique-1\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-1\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row padding_mobiel_vocht row-container onepage-section\" data-label=\"wat-is-opstijgend-vocht\" data-name=\"wat-is-opstijgend-vocht\" id=\"row-unique-2\"><div class=\"row double-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left align_left_tablet align_left_mobile column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 fontheight-505120 font-weight-500 text-color-103889-color\" ><span>Nitric acid is not the same as white mould<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>There is another type of white deposit that is often mistaken for nitric acid, namely white <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/fungi\/\">mould<\/a>. However, 'white mould' is a collective term for fungi that grow in moist environments and are often invisible because of their colour.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Although they look similar, they are not the same. In fact, white mould is a biological fungus, while saltpetre rash is a white, powdery deposit caused by moisture problems and chemical reactions in building materials.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Do you notice white stains on your walls? If so, in most cases it is still nitric acid.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-middle pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" >\n\t<div class=\"wpb_raw_code wpb_raw_html\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/U3z54BaNf3E?si=fIvO6OiV5XDnQOkR&amp;start=107\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-2\" data-row=\"script-row-unique-2\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-2\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-3\"><div class=\"row col-no-gutter double-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-12 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 font-weight-500 text-color-103889-color\" ><span>This is how nitric acid forms on your walls<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\"  id=\"colorlinkwhite\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>As mentioned above, nitric acid on your wall is almost always the result of an underlying moisture problem. However, moisture can work its way inside in a number of ways. Here we list the most common causes of nitric acid on your walls:<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-3\" data-row=\"script-row-unique-3\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-3\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-4\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-6 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>1. Rising damp<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>At <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/rising-damp\/\">rising damp<\/a> the walls absorb soil moisture that migrates upwards through the lower levels of your home. This moisture often contains ammonia and specific nitrate bacteria that react with the masonry. This results in the formation of nitric acid.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"uncode-single-media  text-center\"><div class=\"single-wrapper\" style=\"max-width: 60%;\"><div class=\"uncode-single-media-wrapper\"><img decoding=\"async\" class=\"uncode-missing-media\" src=\"https:\/\/via.placeholder.com\/500x500.png?text=media+not+available&amp;w=500&amp;h=500\" \/><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-4\" data-row=\"script-row-unique-4\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-4\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-5\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-6 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>2. Penetrating moisture<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>At <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/penetrating-moisture\/\">penetrating moisture<\/a> rainwater penetrates through a damaged or porous fa\u00e7ade. The moisture then also comes into contact with the chemical components of the masonry in the process, which can lead to problems such as mould and structural damage.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Only a specialist can say with certainty whether it is infiltrating moisture. Usually, the solution here is to waterproof your basement. But how does such basement waterproofing work? There are two options for that.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"uncode-single-media  text-center\"><div class=\"single-wrapper\" style=\"max-width: 60%;\"><div class=\"tmb tmb-light  tmb-img-ratio tmb-media-first tmb-media-last tmb-content-overlay tmb-no-bg\"><div class=\"t-inside\"><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"uncode-single-media-wrapper\"><div class=\"dummy\" style=\"padding-top: 66.7%;\"><\/div><img decoding=\"async\" class=\"wp-image-26668\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/02\/Doorslaand-vocht-2-uai-630x420.jpg\" width=\"630\" height=\"420\" alt=\"\"><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-5\" data-row=\"script-row-unique-5\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-5\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-6\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-6 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>3. Damp basement<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Because <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/damp-walls\/\">basements<\/a> are underground, they tend to be especially susceptible to moisture. Groundwater and rainwater can seep into the basement, creating an ideal situation for the formation of nitrate deposits on the walls.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"uncode-single-media  text-center\"><div class=\"single-wrapper\" style=\"max-width: 60%;\"><div class=\"tmb tmb-light  tmb-img-ratio tmb-media-first tmb-media-last tmb-content-overlay tmb-no-bg\"><div class=\"t-inside\"><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"uncode-single-media-wrapper\"><div class=\"dummy\" style=\"padding-top: 66.7%;\"><\/div><img decoding=\"async\" class=\"wp-image-29391\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/03\/vochtige-kelder-uai-636x424.jpg\" width=\"636\" height=\"424\" alt=\"\"><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-6\" data-row=\"script-row-unique-6\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-6\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-7\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-6 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>4. Leaks<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Finally, leaking pipes, roofs or drains can also cause moisture in your walls. This moisture stimulates chemical reactions that eventually lead to the white deposit of nitric acid.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>There are some other possible causes, such as missing cavity walls or very old or damaged window frames, but these are the most common.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-7\" data-row=\"script-row-unique-7\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-7\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-8\"><div class=\"row col-no-gutter double-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 fontheight-326604 font-weight-500 text-color-103889-color\" ><span>Why you better fight nitric acid on your wall<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Nitric acid on walls can pose several risks.<\/p><\/span><span><ul><\/span><span><li>Thus, it poses a danger to the structure of the <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/damp-walls\/\">walls<\/a> because it can weaken joints or plaster. This leads to reduced stability.<\/li><\/span><span><li>In addition, it also brings <a href=\"https:\/\/aquaconsult.be\/en\/news\/is-moisture-bad-for-health\/\">health problems<\/a> entail. Think, for example, of respiratory or joint complaints or allergic reactions.<\/li><\/span><span><li>Furthermore, nitric acid on the wall not only poses a health threat, but can also cause aesthetic damage to the interior, such as unsightly stains and deterioration of the finish.<\/li><\/span><span><li>Finally, nitric acid aggravates existing <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/\">moisture problem<\/a> because it attracts moisture itself, so you end up in a vicious cycle, so to speak.<\/li><\/span><span><\/ul><\/span><span><p><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Addressing nitric acid is therefore essential to maintain both the structural integrity and viability of the space.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-8\" data-row=\"script-row-unique-8\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-8\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-9\"><div class=\"row col-no-gutter double-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 fontheight-326604 font-weight-500 text-color-103889-color\" ><span>Say goodbye to nitric acid on your walls for good<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-9\" data-row=\"script-row-unique-9\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-9\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-10\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>Start at the root cause<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>To permanently remove nitric acid on your walls, it is crucial to address the underlying cause. As long as the <a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/\">moisture problem<\/a> persists, the saltpetre deposits will keep returning no matter how often you remove them.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>Since every moisture problem requires a specific approach, it is wise to hire a moisture expert. The latter can accurately analyse the problem and provide the right solution. By tackling the moisture source effectively, you can say goodbye to nitric acid for good.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-10\" data-row=\"script-row-unique-10\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-10\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-11\"><div class=\"row col-no-gutter single-top-padding no-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-middle pos-left align_left column_parent col-lg-6 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h3 class=\"font-673431 fontsize-157814 font-weight-500 text-color-103889-color\" ><span>This is how to remove saltpetre from your walls<\/span><\/h3><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span>You can also take some steps yourself to tackle saltpeter on the wall:<\/p><\/span><span><ul><\/span><span><li>Start by removing the wall covering.<\/li><\/span><span><li>Continue brushing off and stripping off the deposits. Wear protective clothing to do this.<\/li><\/span><span><li>Next, clean the wall with a solution of water and vinegar (the ratio should be 1 part vinegar and 10 parts water).<\/li><\/span><span><li>Rinse the wall with water and leave to dry thoroughly. We recommend staying away from the wall for at least two weeks.<\/li><\/span><span><li>Then treat the wall with an anti-salting agent. It is recommended to apply this in two coats, keeping a close eye on the drying times. Preferably test the product on a small area first.<\/li><\/span><span><\/ul><\/span><span><p><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" style=\" max-width:85%;\" ><div class=\"uncode-single-media  text-left\"><div class=\"single-wrapper\" style=\"max-width: 100%;\"><div class=\"tmb tmb-light  tmb-media-first tmb-media-last tmb-content-overlay tmb-no-bg\"><div class=\"t-inside\"><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"uncode-single-media-wrapper\"><img decoding=\"async\" class=\"wp-image-32117\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph.jpg\" width=\"940\" height=\"788\" alt=\"\" srcset=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph.jpg 940w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph-300x251.jpg 300w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph-768x644.jpg 768w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph-14x12.jpg 14w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph-350x293.jpg 350w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/12\/salpeterzuur-op-muur-verwijderen-infograph-uai-720x604.jpg 720w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-11\" data-row=\"script-row-unique-11\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-11\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container onepage-section\" data-label=\"bestrijden\" data-name=\"bestrijden\" id=\"row-unique-12\"><div class=\"row col-no-gutter no-top-padding double-bottom-padding penta-h-padding full-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-left align_left column_parent col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap colorlinkblue\"><div class=\"heading-text el-text\"  id=\"list_font_size\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-103889-color\" ><span><span style=\"font-weight: 400;\">Note that this is only a temporary solution. As long as the moisture problem at the root of saltpetre on your walls is not addressed, it will continue to return. If this happens, or removal does not work well, it is a good idea to call in a moisture expert.<\/span><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-12\" data-row=\"script-row-unique-12\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-12\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row has-bg need-focus style-back_color-119097-bg row-container\" id=\"row-unique-13\"><div class=\"row col-no-gutter double-top-padding double-bottom-padding single-h-padding limit-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-middle pos-center align_center column_parent col-lg-12 col-md-100 half-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h2 class=\"font-673431 fontsize-102089 font-weight-500 text-color-xsdn-color\" ><span>Do you suffer from saltpeter on your walls?<\/span><\/h2><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\"  id=\"colorlinkwhite\"><p class=\"font-673431 fontsize-192079 font-weight-400 text-color-xsdn-color\" ><span>Contact the experts at Aquaconsult now for a free moisture assessment and we will be happy to help you.<\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><span class=\"btn-container\" ><a role=\"button\"  href=\"https:\/\/aquaconsult.be\/en\/free-expertise\/\" class=\"custom-link btn btn-custom-typo font-673431 font-weight-400 text-initial no-letterspace border-width-0 btn_redesign btn-accent btn-circle btn-icon-left\">Free expertise<\/a><\/span><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-13\" data-row=\"script-row-unique-13\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-13\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row has-bg need-focus style-color-lxmt-bg row-container\" id=\"row-unique-14\"><div class=\"row limit-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-12 single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"owl-carousel-wrapper\" >\n\t\t\t\t\t\t\t\t<div class=\"owl-carousel-container owl-carousel-loading single-gutter\" >\t\t\t\t\t\t\t\t\t<div id=\"index-694947\" class=\"owl-carousel owl-element owl-height-auto\" data-navmobile=\"false\" data-navspeed=\"400\" data-autoplay=\"true\" data-timeout=\"3000\" data-stagepadding=\"0\" data-lg=\"3\" data-md=\"3\" data-sm=\"1\" data-vp-height=\"false\"><div class=\"tmb tmb-carousel atc-typography-inherit tmb-iso-h33 tmb-light tmb-overlay-text-anim tmb-overlay-anim tmb-content-left tmb-image-anim tmb-bordered  grid-cat-1 tmb-id-33928 tmb-img-ratio tmb-content-under tmb-media-first tmb-no-bg\" ><div class=\"t-inside no-anim\" ><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"t-entry-visual-cont\"><div class=\"dummy\" style=\"padding-top: 75%;\"><\/div><a role=\"button\" tabindex=\"-1\" href=\"https:\/\/aquaconsult.be\/en\/news\/the-science-behind-a-comprehensive-and-free-damp-assessment\/\" class=\"pushed\" target=\"_self\" data-lb-index=\"0\"><div class=\"t-entry-visual-overlay\"><div class=\"t-entry-visual-overlay-in style-dark-bg\" style=\"opacity: 0.5;\"><\/div><\/div><img decoding=\"async\" class=\"wp-image-33932\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-vochtdiagnose-uai-1200x900.jpg\" width=\"1200\" height=\"900\" alt=\"\" srcset=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-vochtdiagnose-uai-1200x900.jpg 1200w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-vochtdiagnose-uai-720x540.jpg 720w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-vochtdiagnose-uai-1032x774.jpg 1032w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><div class=\"t-entry-text\">\n\t\t\t\t\t\t\t\t\t<div class=\"t-entry-text-tc single-block-padding\"><div class=\"t-entry\"><p class=\"t-entry-title h6 title-scale\"><a href=\"https:\/\/aquaconsult.be\/en\/news\/the-science-behind-a-comprehensive-and-free-damp-assessment\/\" target=\"_self\">The science behind a watertight and free damp assessment<\/a><\/p><p class=\"t-entry-meta\"><span class=\"t-entry-date\">19\/06\/2026<\/span><\/p><\/div><\/div>\n\t\t\t\t\t\t\t<\/div><\/div><\/div><div class=\"tmb tmb-carousel atc-typography-inherit tmb-iso-h33 tmb-light tmb-overlay-text-anim tmb-overlay-anim tmb-content-left tmb-image-anim tmb-bordered  grid-cat-1 tmb-id-33915 tmb-img-ratio tmb-content-under tmb-media-first tmb-no-bg\" ><div class=\"t-inside no-anim\" ><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"t-entry-visual-cont\"><div class=\"dummy\" style=\"padding-top: 75%;\"><\/div><a role=\"button\" tabindex=\"-1\" href=\"https:\/\/aquaconsult.be\/en\/news\/the-underestimated-impact-of-damp-in-the-home-on-your-body-and-health\/\" class=\"pushed\" aria-label=\"Damp in the home\"  target=\"_self\" data-lb-index=\"1\"><div class=\"t-entry-visual-overlay\"><div class=\"t-entry-visual-overlay-in style-dark-bg\" style=\"opacity: 0.5;\"><\/div><\/div><img decoding=\"async\" class=\"wp-image-33922\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-uai-1200x900.jpg\" width=\"1200\" height=\"900\" alt=\"Damp in the home\" srcset=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-uai-1200x900.jpg 1200w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-uai-720x540.jpg 720w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Header-foto-blog-AquaConsult-uai-1032x774.jpg 1032w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><div class=\"t-entry-text\">\n\t\t\t\t\t\t\t\t\t<div class=\"t-entry-text-tc single-block-padding\"><div class=\"t-entry\"><p class=\"t-entry-title h6 title-scale\"><a href=\"https:\/\/aquaconsult.be\/en\/news\/the-underestimated-impact-of-damp-in-the-home-on-your-body-and-health\/\" target=\"_self\">The underestimated impact of damp in the home on your body and health<\/a><\/p><p class=\"t-entry-meta\"><span class=\"t-entry-date\">12\/06\/2026<\/span><\/p><\/div><\/div>\n\t\t\t\t\t\t\t<\/div><\/div><\/div><div class=\"tmb tmb-carousel atc-typography-inherit tmb-iso-h33 tmb-light tmb-overlay-text-anim tmb-overlay-anim tmb-content-left tmb-image-anim tmb-bordered  grid-cat-1 tmb-id-33906 tmb-img-ratio tmb-content-under tmb-media-first tmb-no-bg\" ><div class=\"t-inside no-anim\" ><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"t-entry-visual-cont\"><div class=\"dummy\" style=\"padding-top: 75%;\"><\/div><a role=\"button\" tabindex=\"-1\" href=\"https:\/\/aquaconsult.be\/en\/news\/damp-proofing-as-an-investment-why-the-increase-in-the-value-of-your-home-exceeds-the-cost-of-treatment\/\" class=\"pushed\" target=\"_self\" data-lb-index=\"2\"><div class=\"t-entry-visual-overlay\"><div class=\"t-entry-visual-overlay-in style-dark-bg\" style=\"opacity: 0.5;\"><\/div><\/div><img decoding=\"async\" class=\"wp-image-33913\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Fotos-voor-blogs-1600-x-900-px-6-uai-1200x900.jpg\" width=\"1200\" height=\"900\" alt=\"\" srcset=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Fotos-voor-blogs-1600-x-900-px-6-uai-1200x900.jpg 1200w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Fotos-voor-blogs-1600-x-900-px-6-uai-720x540.jpg 720w, https:\/\/aquaconsult.be\/wp-content\/uploads\/2026\/06\/Fotos-voor-blogs-1600-x-900-px-6-uai-1032x774.jpg 1032w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><div class=\"t-entry-text\">\n\t\t\t\t\t\t\t\t\t<div class=\"t-entry-text-tc single-block-padding\"><div class=\"t-entry\"><p class=\"t-entry-title h6 title-scale\"><a href=\"https:\/\/aquaconsult.be\/en\/news\/damp-proofing-as-an-investment-why-the-increase-in-the-value-of-your-home-exceeds-the-cost-of-treatment\/\" target=\"_self\">Moisture control as an investment: Why the increase in the value of your home is greater than the cost of treatment<\/a><\/p><p class=\"t-entry-meta\"><span class=\"t-entry-date\">04\/06\/2026<\/span><\/p><\/div><\/div>\n\t\t\t\t\t\t\t<\/div><\/div><\/div><\/div>\t\n\n\n<\/div>    <\/div>\n<span class=\"btn-container\" ><a role=\"button\"  href=\"https:\/\/aquaconsult.be\/en\/news\/\" class=\"custom-link btn border-width-0 btn-accent btn-circle btn-icon-left\" title=\"How do I maintain ideal humidity in my home?\">All blog posts<\/a><\/span><\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-14\" data-row=\"script-row-unique-14\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-14\"));<\/script><\/div><\/div><\/div><div data-parent=\"true\" class=\"vc_row row-container\" id=\"row-unique-15\"><div class=\"row col-double-gutter triple-top-padding triple-bottom-padding single-h-padding limit-width row-parent\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-6 col-md-66 single-internal-gutter\"><div class=\"uncol 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d=gform.hooks[o][r];null==n&&(n=r+\"_\"+d.length),gform.hooks[o][r].push({tag:n,callable:e,priority:t=null==t?10:t})},doHook:function(r,o,e){var t;if(e=Array.prototype.slice.call(e,1),null!=gform.hooks[r][o]&&((o=gform.hooks[r][o]).sort(function(o,r){return o.priority-r.priority}),o.forEach(function(o){\"function\"!=typeof(t=o.callable)&&(t=window[t]),\"action\"==r?t.apply(null,e):e[0]=t.apply(null,e)})),\"filter\"==r)return e[0]},removeHook:function(o,r,t,n){var e;null!=gform.hooks[o][r]&&(e=(e=gform.hooks[o][r]).filter(function(o,r,e){return!!(null!=n&&n!=o.tag||null!=t&&t!=o.priority)}),gform.hooks[o][r]=e)}});\n\/* ]]> *\/\n<\/script>\n\n                <div class='gf_browser_gecko gform_wrapper gform_legacy_markup_wrapper gform-theme--no-framework' data-form-theme='legacy' data-form-index='0' id='gform_wrapper_1' style='display:none'><div id='gf_1' class='gform_anchor' tabindex='-1'><\/div><form method='post' enctype='multipart\/form-data' target='gform_ajax_frame_1' id='gform_1'  action='\/en\/wp-json\/wp\/v2\/posts\/32115#gf_1' data-formid='1' novalidate data-trp-original-action=\"\/en\/wp-json\/wp\/v2\/posts\/32115#gf_1\">\t\t\t\t\t<div style=\"display: none !important;\" class=\"akismet-fields-container gf_invisible\" data-prefix=\"ak_\">\n\t\t\t\t\t\t<label>\u0394<textarea name=\"ak_hp_textarea\" cols=\"45\" rows=\"8\" maxlength=\"100\"><\/textarea><\/label>\n\t\t\t\t\t\t<input type=\"hidden\" id=\"ak_js_1\" name=\"ak_js\" value=\"6\" \/>\n\t\t\t\t\t\t<script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\ndocument.getElementById( \"ak_js_1\" ).setAttribute( \"value\", ( new Date() ).getTime() );\n\/* ]]> *\/\n<\/script>\n\n\t\t\t\t\t<\/div>\n                        <div class='gform-body gform_body'><ul id='gform_fields_1' class='gform_fields top_label form_sublabel_below description_below validation_below'><li id=\"field_1_5\" class=\"gfield gfield--type-number gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_5'>Postcode<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_number'><input name='input_5' id='input_1_5' type='number' step='any'   value='' class='medium'     aria-required=\"true\" aria-invalid=\"false\"  \/><\/div><\/li><li id=\"field_1_11\" class=\"gfield gfield--type-address gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label gfield_label_before_complex' >Address<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label>    \n                    <div class='ginput_complex ginput_container has_street has_city ginput_container_address gform-grid-row' id='input_1_11' >\n                         <span class='ginput_full address_line_1 ginput_address_line_1 gform-grid-col' id='input_1_11_1_container' >\n                                        <input type='text' name='input_11.1' id='input_1_11_1' value=''    aria-required='true'    \/>\n                                        <label for='input_1_11_1' id='input_1_11_1_label' class='gform-field-label gform-field-label--type-sub'>Street address<\/label>\n                                    <\/span><span class='ginput_left address_city ginput_address_city gform-grid-col' id='input_1_11_3_container' >\n                                    <input type='text' name='input_11.3' id='input_1_11_3' value=''    aria-required='true'    \/>\n                                    <label for='input_1_11_3' id='input_1_11_3_label' class='gform-field-label gform-field-label--type-sub'>City<\/label>\n                                 <\/span><input type='hidden' class='gform_hidden' name='input_11.4' id='input_1_11_4' value=''\/><input type='hidden' class='gform_hidden' name='input_11.6' id='input_1_11_6' value='' \/>\n                    <div class='gf_clear gf_clear_complex'><\/div>\n                <\/div><\/li><li id=\"field_1_7\" class=\"gfield gfield--type-checkbox gfield--type-choice field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label gfield_label_before_complex' >Which moisture problems apply?<\/label><div class='ginput_container ginput_container_checkbox'><ul class='gfield_checkbox' id='input_1_7'><li class='gchoice gchoice_select_all'>\n\t\t\t\t\t\t<input class='gfield-choice-input' type='checkbox' id='choice_7_select_all'   onclick='gformToggleCheckboxes( this )' onkeypress='gformToggleCheckboxes( this )' \/>\n\t\t\t\t\t\t<label for='choice_7_select_all' id='label_7_select_all' class='gform-field-label  gform-field-label--type-inline' data-label-select='Select All' data-label-deselect='Deselect All'>Select All<\/label>\n\t\t\t\t\t<\/li><li class='gchoice gchoice_1_7_1'>\n\t\t\t\t\t\t\t\t<input class='gfield-choice-input' name='input_7.1' type='checkbox'  value='Opstijgend vocht in de muren'  id='choice_1_7_1'   \/>\n\t\t\t\t\t\t\t\t<label for='choice_1_7_1' id='label_1_7_1' class='gform-field-label gform-field-label--type-inline'>Rising damp in walls<\/label>\n\t\t\t\t\t\t\t<\/li><li class='gchoice gchoice_1_7_2'>\n\t\t\t\t\t\t\t\t<input class='gfield-choice-input' name='input_7.2' type='checkbox'  value='Vocht in de kelder'  id='choice_1_7_2'   \/>\n\t\t\t\t\t\t\t\t<label for='choice_1_7_2' id='label_1_7_2' class='gform-field-label gform-field-label--type-inline'>Moisture in the basement<\/label>\n\t\t\t\t\t\t\t<\/li><li class='gchoice gchoice_1_7_3'>\n\t\t\t\t\t\t\t\t<input class='gfield-choice-input' name='input_7.3' type='checkbox'  value='Schimmels'  id='choice_1_7_3'   \/>\n\t\t\t\t\t\t\t\t<label for='choice_1_7_3' id='label_1_7_3' class='gform-field-label gform-field-label--type-inline'>Mold<\/label>\n\t\t\t\t\t\t\t<\/li><li class='gchoice gchoice_1_7_4'>\n\t\t\t\t\t\t\t\t<input class='gfield-choice-input' name='input_7.4' type='checkbox'  value='Anders'  id='choice_1_7_4'   \/>\n\t\t\t\t\t\t\t\t<label for='choice_1_7_4' id='label_1_7_4' class='gform-field-label gform-field-label--type-inline'>Otherwise<\/label>\n\t\t\t\t\t\t\t<\/li><\/ul><\/div><\/li><li id=\"field_1_8\" class=\"gfield gfield--type-text gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_8'>Name<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_text'><input name='input_8' id='input_1_8' type='text' value='' class='medium'    placeholder='First name and surname' aria-required=\"true\" aria-invalid=\"false\"   \/><\/div><\/li><li id=\"field_1_3\" class=\"gfield gfield--type-email gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_3'>Email address<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_email'>\n                            <input name='input_3' id='input_1_3' type='email' value='' class='medium'   placeholder='Note your e-mail address' aria-required=\"true\" aria-invalid=\"false\"  \/>\n                        <\/div><\/li><li id=\"field_1_4\" class=\"gfield gfield--type-phone gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_4'>Phone<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_phone'><input name='input_4' id='input_1_4' type='tel' value='' class='medium'  placeholder='Write down your phone number' aria-required=\"true\" aria-invalid=\"false\"   \/><\/div><\/li><li id=\"field_1_9\" class=\"gfield gfield--type-radio gfield--type-choice gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' >How do you prefer to be informed?<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_radio'><ul class='gfield_radio' id='input_1_9'>\n\t\t\t<li class='gchoice gchoice_1_9_0'>\n\t\t\t\t<input name='input_9' type='radio' value='Willekeurig' checked='checked' id='choice_1_9_0'    \/>\n\t\t\t\t<label for='choice_1_9_0' id='label_1_9_0' class='gform-field-label gform-field-label--type-inline'>Random<\/label>\n\t\t\t<\/li>\n\t\t\t<li class='gchoice gchoice_1_9_1'>\n\t\t\t\t<input name='input_9' type='radio' value='Telefonisch'  id='choice_1_9_1'    \/>\n\t\t\t\t<label for='choice_1_9_1' id='label_1_9_1' class='gform-field-label gform-field-label--type-inline'>By phone<\/label>\n\t\t\t<\/li>\n\t\t\t<li class='gchoice gchoice_1_9_2'>\n\t\t\t\t<input name='input_9' type='radio' value='E-mail'  id='choice_1_9_2'    \/>\n\t\t\t\t<label for='choice_1_9_2' id='label_1_9_2' class='gform-field-label gform-field-label--type-inline'>Email<\/label>\n\t\t\t<\/li><\/ul><\/div><\/li><li id=\"field_1_10\" class=\"gfield gfield--type-textarea field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_10'>Additional info<\/label><div class='ginput_container ginput_container_textarea'><textarea name='input_10' id='input_1_10' class='textarea medium'    placeholder='Optional: note any message or additional useful information here'  aria-invalid=\"false\"   rows='10' cols='50'><\/textarea><\/div><\/li><\/ul><\/div>\n        <div class='gform-footer gform_footer top_label'> <input type='submit' id='gform_submit_button_1' class='gform_button button' onclick='gform.submission.handleButtonClick(this);' data-submission-type='submit' value='Send'  \/> <input type='hidden' name='gform_ajax' value='form_id=1&amp;title=&amp;description=&amp;tabindex=0&amp;theme=legacy&amp;styles=[]&amp;hash=c9523e5bb28baefd9aba8a9a08c540d7' \/>\n            <input type='hidden' class='gform_hidden' name='gform_submission_method' data-js='gform_submission_method_1' value='iframe' \/>\n            <input type='hidden' class='gform_hidden' name='gform_theme' data-js='gform_theme_1' id='gform_theme_1' value='legacy' \/>\n            <input type='hidden' class='gform_hidden' name='gform_style_settings' data-js='gform_style_settings_1' id='gform_style_settings_1' value='[]' \/>\n            <input type='hidden' class='gform_hidden' name='is_submit_1' value='1' \/>\n            <input type='hidden' class='gform_hidden' name='gform_submit' value='1' \/>\n            \n            <input type='hidden' class='gform_hidden' name='gform_currency' data-currency='EUR' value='slB1VJE3QVmdwO+NfHKJP7EzG36iLDi0OjX4HGISlsg1CoTV0ckc\/u0SEgg67ZO3nAlA38wuvWmFeKa9Bl7DMuVWNGDXCdtfyT6wbDQGczucgF0=' \/>\n            <input type='hidden' class='gform_hidden' name='gform_unique_id' value='' \/>\n            <input type='hidden' class='gform_hidden' name='state_1' value='WyJbXSIsIjMzZGQxZTFkZDFmZDNmMjY5ZDA4NGZkYWQxNWNlMGRkIl0=' \/>\n            <input type='hidden' autocomplete='off' class='gform_hidden' name='gform_target_page_number_1' id='gform_target_page_number_1' value='0' \/>\n            <input type='hidden' autocomplete='off' class='gform_hidden' name='gform_source_page_number_1' id='gform_source_page_number_1' value='1' \/>\n            <input type='hidden' name='gform_field_values' value='' \/>\n            \n        <\/div>\n                        <input type=\"hidden\" name=\"trp-form-language\" value=\"en\"\/><\/form>\n                        <\/div>\n\t\t                <iframe style='display:none;width:0px;height:0px;' src='about:blank' name='gform_ajax_frame_1' id='gform_ajax_frame_1' title='This iframe contains the logic required to handle Ajax powered Gravity Forms.'><\/iframe>\n\t\t                <script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n gform.initializeOnLoaded( function() {gformInitSpinner( 1, 'https:\/\/aquaconsult.be\/wp-content\/plugins\/gravityforms\/images\/spinner.svg', true );jQuery('#gform_ajax_frame_1').on('load',function(){var contents = jQuery(this).contents().find('*').html();var is_postback = contents.indexOf('GF_AJAX_POSTBACK') >= 0;if(!is_postback){return;}var form_content = jQuery(this).contents().find('#gform_wrapper_1');var is_confirmation = jQuery(this).contents().find('#gform_confirmation_wrapper_1').length > 0;var is_redirect = contents.indexOf('gformRedirect(){') >= 0;var is_form = form_content.length > 0 && ! is_redirect && ! is_confirmation;var mt = parseInt(jQuery('html').css('margin-top'), 10) + parseInt(jQuery('body').css('margin-top'), 10) + 100;if(is_form){form_content.find('form').css('opacity', 0);jQuery('#gform_wrapper_1').html(form_content.html());if(form_content.hasClass('gform_validation_error')){jQuery('#gform_wrapper_1').addClass('gform_validation_error');} else {jQuery('#gform_wrapper_1').removeClass('gform_validation_error');}setTimeout( function() { \/* delay the scroll by 50 milliseconds to fix a bug in chrome *\/ jQuery(document).scrollTop(jQuery('#gform_wrapper_1').offset().top - mt); }, 50 );if(window['gformInitDatepicker']) {gformInitDatepicker();}if(window['gformInitPriceFields']) {gformInitPriceFields();}var current_page = jQuery('#gform_source_page_number_1').val();gformInitSpinner( 1, 'https:\/\/aquaconsult.be\/wp-content\/plugins\/gravityforms\/images\/spinner.svg', true );jQuery(document).trigger('gform_page_loaded', [1, current_page]);window['gf_submitting_1'] = false;}else if(!is_redirect){var confirmation_content = jQuery(this).contents().find('.GF_AJAX_POSTBACK').html();if(!confirmation_content){confirmation_content = contents;}jQuery('#gform_wrapper_1').replaceWith(confirmation_content);jQuery(document).scrollTop(jQuery('#gf_1').offset().top - mt);jQuery(document).trigger('gform_confirmation_loaded', [1]);window['gf_submitting_1'] = false;wp.a11y.speak(jQuery('#gform_confirmation_message_1').text());}else{jQuery('#gform_1').append(contents);if(window['gformRedirect']) {gformRedirect();}}jQuery(document).trigger(\"gform_pre_post_render\", [{ formId: \"1\", currentPage: \"current_page\", abort: function() { this.preventDefault(); } }]);        if (event && event.defaultPrevented) {                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attributes: true,                childList: false,                subtree: true,                attributeFilter: [ 'style', 'class' ],            });        } else {            triggerPostRender();        }    } );} ); \n\/* ]]> *\/\n<\/script>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-2 tablet-hidden mobile-hidden col-md-100 no-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell no-block-padding  unradius-std\" ><div class=\"uncont\" ><div class=\"uncode-single-media  text-left\"><div class=\"single-wrapper\" style=\"max-width: 100%;\"><div class=\"tmb tmb-light  tmb-media-first tmb-media-last tmb-content-overlay tmb-no-bg\"><div class=\"t-inside\"><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"uncode-single-media-wrapper\"><img decoding=\"async\" class=\"wp-image-22131\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/02\/laagste-prijs-cropped.png\" width=\"175\" height=\"177\" alt=\"\"><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"wpb_column pos-top pos-center align_left column_parent col-lg-4 col-md-33 col-md-clear single-internal-gutter\"><div class=\"uncol style-light\"  ><div class=\"uncoltable\"><div class=\"uncell single-block-padding style-back_color-167686-bg has-bg  unradius-std\" ><div class=\"uncont\" ><div class=\"vc_row row-internal row-container desktop-hidden\"><div class=\"row row-child\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left column_child col-lg-12 single-internal-gutter\"><div class=\"uncol style-light\" ><div class=\"uncoltable\"><div class=\"uncell no-block-padding\" ><div class=\"uncont\" ><div class=\"uncode-single-media  text-center\"><div class=\"single-wrapper\" style=\"max-width: 80%;\"><div class=\"tmb tmb-light  tmb-media-first tmb-media-last tmb-content-overlay tmb-no-bg\"><div class=\"t-inside\"><div class=\"t-entry-visual\"><div class=\"t-entry-visual-tc\"><div class=\"uncode-single-media-wrapper\"><img decoding=\"async\" class=\"wp-image-22131\" src=\"https:\/\/aquaconsult.be\/wp-content\/uploads\/2024\/02\/laagste-prijs-cropped.png\" width=\"175\" height=\"177\" alt=\"\"><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><div class=\"empty-space empty-single desktop-hidden\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row row-internal row-container\"><div class=\"row row-child\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_left column_child col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\" ><div class=\"uncoltable\"><div class=\"uncell one-block-padding\" ><div class=\"uncont\" ><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h5 class=\"font-673431 fontsize-157814 fontheight-176213 font-weight-500\" ><span>AquaConsult<\/span><\/h5><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><p class=\"font-673431 fontsize-192079 fontheight-176213 font-weight-400\" ><span><a href=\"https:\/\/aquaconsult.be\/en\/why-aquaconsult\/\">Advantages of AquaConsult<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/free-expertise\/\">Request a free moisture diagnosis<\/a><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"empty-space empty-half\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h5 class=\"font-673431 fontsize-157814 fontheight-176213 font-weight-500 text-color-797150-color\" ><span>Moisture problems<\/span><\/h5><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><p class=\"font-673431 fontsize-192079 fontheight-176213 font-weight-400\" ><span><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/\">All moisture problems<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/damp-cellar\/\">Damp basement<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/damp-walls\/\">Damp walls<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/rising-damp\/\">Rising damp<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/condensation-moisture\/\">Condensation moisture<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-problems\/fungi\/\">Mold<\/a><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"empty-space empty-half\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><h5 class=\"font-673431 fontsize-157814 fontheight-176213 font-weight-500 text-color-797150-color\" ><span>Moisture solutions<\/span><\/h5><\/div><div class=\"clear\"><\/div><\/div><div class=\"vc_custom_heading_wrap\"><div class=\"heading-text el-text\" ><p class=\"font-673431 fontsize-192079 fontheight-176213 font-weight-400\" ><span><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/\">All humidity solutions<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-control\/\">Moisture control methods<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/wall-injection\/\">Injection of walls<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/plastering\/\">Plastering<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/basement-drainage\/\">Basement sealing<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/basement-drainage\/\">Basement drainage<\/a><\/p><\/span><span><p><a href=\"https:\/\/aquaconsult.be\/en\/moisture-solutions\/ventilation\/\">Ventilation<\/a><\/span><\/p><\/div><div class=\"clear\"><\/div><\/div><div class=\"empty-space empty-half\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row row-internal row-container\"><div class=\"row row-child\"><div class=\"wpb_row row-inner\"><div class=\"wpb_column pos-top pos-center align_center column_child col-lg-12 half-internal-gutter\"><div class=\"uncol style-light\" ><div class=\"uncoltable\"><div class=\"uncell one-block-padding\" ><div class=\"uncont\" ><span class=\"btn-container animate_when_almost_visible left-t-right\" data-delay=\"300\"><a role=\"button\"  href=\"https:\/\/aquaconsult.be\/en\/free-expertise\/\" class=\"custom-link btn btn-custom-typo font-673431 font-weight-500 text-initial no-letterspace border-width-0 btn_redesign btn-button_color-873088 btn-circle btn-icon-left\">Free expertise<\/a><\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"empty-space empty-half\" ><span class=\"empty-space-inner\"><\/span><\/div>\n<\/div><\/div><\/div><\/div><\/div><script id=\"script-row-unique-15\" data-row=\"script-row-unique-15\" type=\"text\/javascript\" class=\"vc_controls\">UNCODE.initRow(document.getElementById(\"row-unique-15\"));<\/script><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Fungi come in all sizes and colours, but the best known is black mould. What exactly is black mould? What are its causes or solutions? Is it harmful? We list it for you.<\/p>","protected":false},"author":17,"featured_media":32119,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3779],"class_list":["post-32115","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vocht-ventilatie","tag-vochtproblemen"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Wat is salpeter op de muur? 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