Treatment of rising damp: price per running metre at AquaConsult in 2026

A reliable estimate of the rising damp The price of the treatment starts at the correct unit of measurement. Many homeowners wonder whether moisture control Charges are calculated per square metre or per running metre. At AquaConsult, we use a clear pricing structure based on the work required, with all prices quoted exclusive of VAT.

• The wall injection per running metre: to stop rising groundwater, our experts drill holes in a horizontal line just above floor level and inject a powerful, water-repellent grout at a precisely calculated angle, so that the grout can spread deep into the pores. As this involves a horizontal line, we always charge for professional wall injections by the running metre (lm) rather than by the square metre.
• Possible wall treatments per square metre: injecting the walls stops new rising damp, but often there is already hygroscopic salts torn into the old plasterwork. The damaged layer of plaster must be removed over the entire height of the wall, a salt-barrier membrane must be fitted, and the wall must be replastered plastering need to be carried out? In that case, that specific component will be calculated per square metre (m²).
• Fixed set-up fee for small jobs: Is it just a single short internal wall or a small area? In that case, a fixed minimum charge applies per job. This ensures that our field engineers’ travel costs, the site set-up and professional damp-proofing are always covered.
• Automatic volume discount for larger projects: Do you need several walls or an entire ground floor to be professionally treated with wall injections to prevent rising damp? From 30 linear metres, the unit price per metre is automatically reduced, and for projects exceeding 50 linear metres, you’ll benefit from an even more competitive rate.

Fancy having a go at measuring it yourself? Take a tape measure and measure the horizontal length of all the affected damp walls Run the tape measure close to the skirting board or floor. Record each wall separately and round the total up. Or let our experts measure your walls during our free expertise.

Not a single property in Flanders is identical. When our experts come round to a damp survey On site, we’ll assess the specific structural conditions to determine your exact price for professional wall injections tailored to rising damp. Five factors always determine the final price for this definitive damp-proofing treatment.

• Wall type, wall thickness and construction: a standard internal wall made of quick-set blocks, for example 14 cm thick, can be treated more quickly and with less grout than a thick, historic load-bearing brick wall or heterogeneous masonry. In the case of a cavity wall or an extra-thick wall, from 30 to 40 cm, our expert will assess whether a single-sided injection is sufficient or whether both sides need to be treated to ensure a permanent damp-proof barrier.
• The total length of the affected walls: the scale of the project has a direct impact on the price per metre. For small, localised jobs, a fixed minimum charge per job applies. However, if several walls or an entire ground floor need to be treated, the rate per running metre automatically decreases thanks to our discounts for 30 and 50 running metres or more.
• The severity and extent of damp and salt damage: the longer rising damp is left untreated, the higher the groundwater level and the harmful salts creep into the plasterwork, sometimes even reaching heights of 1.5 to 2 metres. That determines how many square metres of plastering may need to be replaced afterwards.
• Accessibility of the site: our experts can work their way along long, straight walls in an open space with ease. Are there fixed kitchen cupboards, radiator pipes or built-in cupboards in the way, or does the room have lots of short corners and doorways? If so, the preparation and execution will require extra precision and more working time.
• The chosen wall finish: If you choose to simply the damp walls Would you prefer to have the wall injected and take care of the finishing touches yourself, or would you like our experts to take care of everything for you? If we also remove the old, salt-contaminated plaster, install a salt-resistant membrane and replaster the wall smoothly, the cost of this finish per square metre will be added to the wall injection price. Anyone who chooses to carry out preparatory work themselves – such as removing the skirting boards or chipping away the old plaster – will save money on these costs.

At AquaConsult, we believe in transparent communication with no surprises later on. For Professional rendering of your walls at rising damp The following guide prices, excluding VAT, will apply in 2026.

• Standard wall injection up to 30 lm: you pay between €80 and €110 per linear metre, depending on the wall thickness and the accessibility of the site.
• Minimum charge per assignment: for smaller assignments, a fixed starting price of €850 per project applies.
• Volume discount from 30 running metres: are multiple damp walls If this is dealt with, the rate will automatically drop to €70 per running metre.
• Maximum discount from 50 running metres: for large projects or complete renovations, you pay just €65 per running metre.

Four practical calculation examples for professional wall injections

To give you a clear idea of what these prices might mean for your home, we’ve set out four common scenarios – excluding any plastering work and VAT – along with guide prices.

• Minor job (10 lm): if 10 linear metres need to be treated at €80, the total cost is €800, meaning that the fixed minimum charge of €850 applies for the treatment of rising damp.
• Average terraced or corner house (25 lm): for a standard property, the price ranges from €2,000 to €2,750.
• Larger property (35 lm): thanks to the discount for jobs exceeding 30 running metres – for example, 35 lm at €70 – the total comes to €2,450.
• Complete renovation of a detached villa (55 linear metres): with the most competitive rate for areas over 50 linear metres – for example, 55 linear metres at €65 – the investment amounts to €3,575.

Guide prices for any wall finishing work following wall injection

Would you also like our skilled tradespeople to repair the damaged plasterwork after the wall injection, so that residual salts Not get another chance? We use rates per square metre for that as well:

• Complete refurbishment, including trimming, a salt-resistant membrane and re-plastering: expect to pay between €165 and €205 per square metre, depending on the situation.
• Discount if you carry out the preparatory work yourself: if you remove the old plasterwork yourself beforehand, the price shown above will be reduced by €10 per square metre.
• Fitting a salt-resistant membrane only: if your wall is already completely bare and ready for treatment, the price is €110 per square metre.

A moisture problem is harmful to your home and your health, which means you a permanent solution to damp It’s best not to put it off. But we know that moisture control requires an investment. Fortunately, thanks to government support and our flexible solutions, you don’t always have to bear the full cost yourself. These benefits allow you to reduce or spread the costs.

• My Renovation Premium: Since the changes in March 2026, owner-occupiers in the two lowest income brackets and landlords letting to a housing association have been specifically eligible for financial support to tackle damp. Depending on your income bracket, you will be reimbursed 35% or 50% of your bill, up to a maximum of €1,400 or €2,000. Important: Your invoice must be for at least €1,000 (excl. VAT), and DIY work does not count towards this. You therefore need a recognised and registered company, such as AquaConsult, to help reduce your costs associated with rising damp.
• Reduced VAT rate of 6%: Is your property in Belgium more than 10 years old? If so, you automatically benefit from the reduced VAT rate of 6% instead of 21% on both our labour and materials. What’s more, this benefit can be combined with the ‘Mijn VerbouwPremie’ scheme.
• Local premiums via Premium Finder: Certain towns, municipalities and provinces offer additional local renovation grants on top of the Flemish support. Be sure to take a look at the official ‘Premiezoeker’ website to find out what’s available in your area.
• My Renovation Loan: Do you need extra funding, on top of the premium, to permanently resolve rising damp? You can borrow up to €60,000 through the government. Since 2026, this loan has become even more affordable, with terms specifically tailored to those on the lowest incomes.

Pay at your own pace: our bespoke instalment plan

Is the total cost a bit too much for your budget at the moment, but do you still want a healthy, dry home straight away? We offer a flexible home improvement loan via Alpha Credit, allowing you to spread the cost of the investment to treat rising damp over several months.

Thanks to an exclusive, limited-time offer, you can also borrow interest-free. You initially pay a deposit of 30% of the invoice amount, after which you pay the remaining balance in monthly instalments without any additional interest charges. This way, we solve your damp problem once and for all, and you pay at your own pace.

A completely hassle-free service: from diagnosis to claiming your benefit

At AquaConsult, our service doesn’t stop once the walls are rising damp be dry again. We’ll guide you step by step through the entire process. Following the professional completion of wall injections we’ll provide you with the correct invoice and all the necessary certificates. That way, your paperwork will be in perfect order and you can the premiums Submit your damp-proofing application digitally, quickly and easily.

In short: the cost of treating rising damp At AquaConsult, 100% is always transparent. You pay a fixed price of €80 to €110 per running metre, with a minimum charge of €850 per project. For larger projects, this rate can even drop to €65 per running metre thanks to volume discounts. No hidden costs, just a fair price for a permanent solution to damp with a 30-year guarantee. Nevertheless, every successful treatment begins with the right moisture diagnosis. Is it really rising damp, or is it actually a case of condensation moisture or penetrating moisture? Would you like to be sure of the cause and receive an exact, bespoke quote for your walls? Get in touch today, with no obligation contact Get in touch with us. Our field engineers will visit you free of charge anywhere in Flanders. Do you wonder free expertise for a professional wall injection and a bespoke cost price.