Permeable moisture, also known as rain penetration, can be easily recognized by the random places where moisture problems appear. Unlike rising damp, which is located on the ground floor and in basements, penetrating damp can also occur on upper floors.

AquaConsult can help you, anywhere in Flanders. Are you suffering from persistent moisture? Contact us here for a free moisture analysis.


Not sure if you are suffering from penetrating damp? Our specialists will visit you for free and without obligation. With a moisture meter, we can determine what the humidity level is at a certain height. A good moisture diagnosis is essential to take into account several parameters. Contact our specialists for more info.

What is penetrating moisture?

Permeable moisture refers to moisture that enters through the exterior of a building and seeps through the interior walls. Precipitation, such as rain or snow, hits the exterior walls of a home, so to speak. These exterior walls then suck in the moisture and absorb it. Precipitation thus has a chance to soak into the walls.

What causes persistent moisture?

Under normal circumstances, a wall should not absorb moisture. However, there are some common causes of penetrating moisture:

  • Porous exterior walls over time
  • Cracks or grooves around window frames
  • Damaged exterior walls including damaged brick or worn joints
  • Leaking gutters or a downspout problem
  • Construction Errors

Typically, older homes are more prone to seepage, due to such things as plant growth against the exterior walls or weather conditions that weaken the exterior walls over time. But, a construction defect or leaking gutter can just as easily cause water to seep in over time.

What are possible consequences of persistent moisture?

Moisture problems are usually accompanied by negative consequences. The moisture not only damages your exterior walls, it also affects your interior walls. The wallpaper and plaster can come off the wall, where mold can develop that also does your furniture no good. This is further accompanied by low air quality and a bad odor in your home, which can cause health issues.

Are your walls insulated? Then the insulation material can also become damp, losing its insulation value. In addition, your house will also feel cold, so you will heat more and feel this in your wallet.

Thus, it is more than advisable to combat persistent moisture in a timely manner to limit further damage.

Resuscitating moisture

How do you recognize persistent moisture?

Permeable moisture can be easily recognized by the random places where the moisture problems appear. Unlike rising damp, which occurs on the ground floor and in basements, penetrating damp can also occur on higher floors. Penetrating damp can usually be recognized by the following:

  • Coloured plaster
  • Crumbling plaster
  • White salt circles or stains
  • Loose wallpaper
  • Finishing the wall that comes loose
  • Mold
  • Musty odors
  • Broken joints by frost


If you're unsure if you're dealing with penetrating moisture, our experts will visit you at no cost or obligation. Using a moisture meter, we can determine moisture levels at specific elevations. It is crucial to conduct a thorough moisture analysis that considers several factors. Contact our experts for more information.

Fighting persistent moisture

When you're dealing with penetrating moisture, it's a good idea to treat it as soon as possible. Click here to discover the solution for persistent damp.

We recommend contacting an expert moisture control professional to ensure accurate execution of the work. You can contact us for this as well. Do you have questions or would you like to request a quote? Contact us using the button below or the form.

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