Moisture in walls is a common problem. Poor grouting or porous stone is often the cause. Get your damp wall professionally tackled by a specialist so it doesn’t recur. Did you know that some specialists give a 10-year guarantee on a wall they have treated? Renoca has mapped out your options and the costs.
What does damp wall control cost?
The price of damp wall control depends on the type of damp you want to combat. The 2 most common cases are: rising damp and penetrating damp. Rising damp rises from the ground and penetrating damp is the result of wet external walls. Both cases can be treated well with different techniques. Check out the prices for these in the following overview:
| Type of damp proofing | Treatment | Average price including VAT and materials |
|---|---|---|
| Extractive (technique: injecting) | Exterior wall injecting (8 linear metres) | £800 |
| Interior and exterior cavity wall injecting (8 linear metres) | £1.500 | |
| Repairing and injecting a wall (8 linear metres) | £ 2,200 | |
| Outdoor wall impregnation (technique: impregnation) | Outdoor wall impregnation (100 m2) | £ 900 |
| Cleaning and impregnating a facade (100 m2) | £ 1.700 | |
| Pointing, cleaning and impregnation of a facade (100m2 | £ 3,000 |
Find the best specialist for your project and get free quotes.
Start
The cost of moisture control in your wall depends a lot on the severity of the moisture and the area to be treated. We have worked out 3 moisture control options for you.
Basic
Would you like to have a newly built house impregnated? Then you don’t need to have the wall cleaned or repaired first and the specialist can start impregnating immediately. For an average wall (100m2) this will cost around £900.
If you are suffering from rising damp, you can have your wall injected. This is done on the outside of the wall. The cost of injecting your walls starts at around £800.
Most common
Most damp problems are caused by rising damp. With rising damp, you opt for injecting walls. If you have a cavity wall with rising damp, it is necessary to inject the wall on the inside of your house as well. Prices for this project are around £1,500 for a wall of 8 linear metres.
Comprehensive
Is your wall damaged and in need of repair? Then get your wall repaired before the specialist starts moisture control. If you don’t do this, moisture will still manage to find its way inside via cracks and wear and tear. On average, repairing and damp-proofing your wall will cost between £2,200 (injecting) and £3,000 (impregnating).
How does the price breakdown for damp-proofing walls look?
Most of the costs are in the materials used. Control agents are expensive to buy and applying them requires professional tools such as compressors to spray the substance into your wall at high pressure. If you want the stubborn damp to be fought properly, always get this done by a specialist.
Choices that affect wall damp proofing price
The cost of damp proofing your walls is largely determined by the cost of materials. You can control the amount of the other costs yourself by making a number of choices.
Choice 1: Impregnation or injection
This choice is determined by the type of damp problem you are dealing with. For damp penetration, impregnation is the solution and for rising damp you choose injection.
Impregnation: Impregnation involves applying a protective layer over the wall that fills ridges within the bricks and makes the wall water-repellent. A specialist charges an average of £10 per m2 for impregnating your wall.
Injection: A damp-proofing agent is injected into your wall through boreholes that stops rising damp. A specialist will charge an average of £100 per linear metre for injecting your wall.
The difference between injecting and impregnating is that with injecting a damp-proofing substance is injected into your wall and with impregnating the outside is treated with a damp-proofing liquid.
Choice 2: Mould
Has the damp affected your wall to such an extent that mould has formed? If so, let your specialist remove the mould first. Mould in your home is not only harmful to your walls, but also to your health. The price for removing mould depends on the situation and type of mould, on average it will cost around £150 per 3 m2.
Choice 3: Replacing grouting
It is important that the grouting of your wall is in good order, otherwise you will soon have moisture in your walls again. Replacing your grouting also gives your house a refreshed look and prevents leakage. Having your wall grouted costs on average £18 – £23 per m2.
Choice 4: Finishing
When injecting your interior wall, you can only start finishing it after the wall is dry. Drying takes 6 to 12 months on average. Don’t feel like looking at an unfinished wall for that long? Then have a salt and moisture-resistant membrane placed between the contested wall and the finish. This will cost you around £20 per m2 after which you can start finishing immediately. Want to have the finishing professionally done? A painter costs on average £30 per m2 and a plasterer is slightly cheaper, at around £23 per m2. Both prices include materials, labour and VAT.
