How to Do DIY Damp Proofing and the Cost of Materials

diy damp proofing

The cost of damp proofing is not as high as you might imagine; a few materials and some knowhow will keep your home safe and your property in good repair, free from the risk of mould and other problems caused by damp and condensation.

Is DIY Damp Proofing Easy?

In many cases simply painting with anti damp paint can give you protection from dampness especially in cellars and basements, or in baths where condensation and humidity build up. This is the easiest DIY damp proofing and also the quickest.

Other materials can be used somewhat quickly and easily if you have a bit of knowledge of how to maintain your home. Plasterboard for the ceilings or walls can be used that have anti damp properties, and these damp proofing materials are relatively inexpensive and easy to install with just a few tools and a bit of help. These are good to use when you’re remodelling or refinishing your basement or cellar where you may have more damp problems than usual.

What Materials Are Needed, What do They Cost, and Where to Buy Them?

Anti damp paint is available from just about any hardware store or home improvement store, or you can buy it online at or other retailers. A 750ml bucket of anti damp paint may cost around £12.00; a 5 litre bucket may cost around £32.50 and is enough to cover an entire room or two. You may need to cover these paints with another paint of a colour of your choosing since more anti damp paints are simple white, although you may find some in other colours that are just as pleasing.

Other damp proofing materials such as plasterboard for roofs and walls or membranes behind your materials can be purchased online; try Rolls of membranes may cost around £300 and can be used for an entire room or for use outside when covering the foundation. Measure your room to be covered or the outside foundation before ordering so you know you have enough. Remember that the cost of damp proofing materials is always much less than the cost of repairing your home after damp and mould have caused damage to those materials.

How to Do the Damp Proofing

Anti damp paint is applied like any other paint; you need to treat and clean the walls and surfaces before you paint. If you have mould build-up, this needs to be cleaned thoroughly and the surface needs to dry before you can apply paint. You may also need to do some sanding and other prep work before you paint.

Membrane and plasterboard may be a bit trickier to apply but membrane will go behind the walls and a sealant will cover it. The water is drained through the membrane before it can collect on walls, and plasterboard will not allow for condensation to seep through. A baseline mesh is applied and then another coating of membrane over this, for the most protection against damp walls. Each layer is sealed and then the plasterboard is applied over this. Membranes are used for cellars and basements but also for exterior areas such as the foundation of a home.

While DIY damp proofing may sound complicated, it can be very simple. However, if you think that damp proofing DIY is more than you can handle with your knowhow as to home repair and improvement, call a professional that will handle the job for you. This will ensure your home is in good repair and that the job is done properly to protect your materials from mould and other build-up.