Expert On How To Stop Damp Before It Takes Hold And Destroys Your Home

A leading property care specialist has shared his top five tips to stop damp before it can take hold and destroy your home.George Edwards, a damp and waterproofing expert at Timberwise, says most serious moisture problems begin with small, overlooked issues rather than dramatic floods. He is urging homeowners to act early and think strategically about waterproofing, particularly as heavier rainfall and ageing housing stock continue to increase risk across the UK.

“Most damp problems do not begin with a dramatic flood,” George explains. “They start as small, repeatable events. Water pushing through below ground walls after heavy rain, moisture collecting under suspended floors, or drainage failing outside and sending water back towards the building.”

He warns that damp is a symptom rather than a diagnosis, and that rushing to apply a quick internal fix can often lead to bigger bills later.

“When people call me about damp, they often want a quick product recommendation. I understand that. Nobody wants their home turned into a building site. But what I see time and again is that water follows the easiest path. That path is often something small that has been ignored for years. A blocked gully. A patio that sits too high. A sub floor void that never gets checked.”

George says the homes that stay dry long term are those where waterproofing is treated as a structured plan. “Owners need to reduce the amount of water reaching the building, use the right system for the level of risk, and make sure whatever is installed can be maintained.”

Below, George shares his top five tips for waterproofing your property before damp sets in.

1. Diagnose the water route first

Do not start with the stain on the wall. Start by working out how the water is getting there in the first place. In one case we worked on in Luton, the issue was tied to drainage and external conditions, including blocked gullies and ground levels. An internal only fix would have missed the cause. If you are below ground level, assume the risk is higher until proven otherwise. I have worked on period properties where the below ground space needed a properly designed approach because groundwater pressure can build up around the structure. My advice is to get a proper assessment before spending money, because guessing usually means paying significantly more later.”

2. Fix outside factors that feed damp

Waterproofing begins outside the building line. If your drains are not taking water away, your walls and floors end up dealing with it instead. I have seen gullies that looked like a minor maintenance job play a big part in water ending up where it should not be. If you reduce the amount of water reaching the structure, every system you install has an easier job.

3. Use a maintainable system in high risk areas

When you are dealing with below ground structures, look for solutions designed to cope with water. A common professional approach is a cavity drain membrane system that allows water entering the structure to be controlled, directed to drainage channels, then removed. I have used Type C cavity drain approaches where water runs down the membrane into perimeter drainage, then diverts to a suitable discharge point. Reliability comes from choosing the right system for the risk and making sure it can be lived with, repaired if needed, and kept working year after year.

4. Treat structural and hygiene issues properly

I always look beyond the visible dampness. If water has been sitting in a sub floor void, timbers can suffer badly. I have seen flooding into a sub floor void linked with wet rot fungus affecting timber elements, and the remedial plan included removing affected timbers and replacing them with treated timber. If the water is contaminated, treat that as a separate risk. In such cases, the work will include sterilising masonry with a biocide fluid before the waterproofing system can be installed, because you do not want bacteria and contamination trapped behind a new lining.

5. Make maintenance part of the design

I trust systems that can be checked, cleaned and serviced. Industry guidance around Type C drained protection puts real emphasis on servicing and maintenance, and on making sure the system is maintainable in practice, not just on paper. That means access points, inspection and the ability to flush drainage where needed. If you do one thing after waterproofing, do this. Put a recurring reminder in your calendar to have the system checked, because prevention is always cheaper than repair.