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There are several reasons why your home might be susceptible to penetrating moisture. Leaking or pierced pipes, broken roofs, and clogged gutters are all common sources of damp problems. Because the previous flaws enable water to infiltrate through your property’s walls, they cause dampness to occur.
Rainfall can permeate structures through leaking roofs, blocked gutters, overflows, and other water entry points, resulting in penetrating damp. When water penetrates the building’s framework, it can cause substantial structural damage to the walls and beams. Large stains left on the ceiling, floors, walls, and interior painting make this sort of moisture easier to notice, especially after severe rains.
As time passes, the amount of moisture damage and paint lifting on your interior walls becomes more apparent. These problems are exacerbated during the winter months when water trapped in the walls freezes and expands, causing the raised paintwork to flake.
We provide a complete and non-invasive leak detection solution, including thermal imaging, gas tracking, and an acoustic microphone.

Clear any blocked downpipes regularly and repair cracked, damaged, or have fallen loose from the wall.

Check for missing or broken roof tiles and replace them.

Examine the spaces around your windows and doors to ensure that water is successfully flowing away from them. You may notice a build-up of moss if there are any obstructions, which will exacerbate the situation.
An exterior inspection is an initial stage in surveying a structure. A surveyor will look for evidence of external water infiltration, such as masonry fractures, leaky pipes, or damaged flashings and tiles. The condition of brickwork, stone and mortar, chimneys, flashings, rainwater goods, and valleys, as well as exterior timbers and the state and installation of windows, doors, and air vents, will be examined by the surveyor. The location of current remedial DPCs, as well as the ground levels, will also be investigated.

Damp surveyors with a lot of experience and qualifications

Damp surveys that are comprehensive and honest

Dedicated to delivering an excellent helpful service
Some of the issues we’ve helped to solve in tens of thousands of homes:
Hidden leaky plumbing has resulted in a wood rot infestation, including the Dry Rot fungus (Serpula lacrymans)If salt contamination has affected timbers, our team provides targeted treatments to address the damage and protect against future deterioration.
Posted on Google Tony ShepherdTrustindex verifies that the original source of the review is Google. A massive big thank you to you guys!! Couldn’t recommend you enough!! Friendly, professional and very knowledgeable on the task at hand. The damp in my house has been driving me mad for years and my house is like new again thanks to you guys. You have done an amazing job and I am honestly so happy with the end result. Thank you once again and please if anyone wants to get your house damp free, please contact Sussex Damp Experts! Amazing work!Posted on Google Elle WhiteTrustindex verifies that the original source of the review is Google. Recently had Sussex Damp attend to a persistent damp problem in my home. From the initial consultation to the completion of the work, their team displayed professionalism and expertise. They accurately diagnosed the issue and implemented an effective solution! The work was completed on schedule, and the team ensured the area was clean and tidy afterward. I highly recommend Sussex Damp for anyone facing damp issues in their property 😄Posted on Google Luke HornerTrustindex verifies that the original source of the review is Google. Huge thanks to Sussex Damp for sorting out the damp in my home! The team was absolutely fantastic—friendly, professional, and really knew their stuff. They made the whole process stress-free, and I now feel so relieved that the problem is completely sorted. Would 100% recommend them to anyone dealing with damp issues!Posted on Google Lilly HooperTrustindex verifies that the original source of the review is Google. I had an excellent experience with Sussex Damp Experts. Their team was professional, knowledgeable, and efficient in resolving the damp issues in my property. They took the time to explain the problem and provided clear solutions, which gave me peace of mind. The work was completed to a high standard, and I was impressed by their attention to detail. I highly recommend Sussex Damp Experts!Posted on Google Erin RobinsonTrustindex verifies that the original source of the review is Google. "I recently had Sussex Damp Experts come to my property, and I couldn't be more impressed with their service. They carried out a thorough survey and provided a very detailed report that identified rising dampness in my home. The team was professional, friendly, and efficient throughout the entire process. They completed the necessary work with great attention to detail and left the property clean and tidy. It was a pleasure working with such a reliable and knowledgeable company. Highly recommend Sussex Damp Experts to anyone in need of damp treatment!"Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Lion House, The Street, Cowfold RH13 8BP
1 Blatchington Road, Hove, BN3 3YP
© 2026 Damp Experts Group Ltd. All rights reserved. | Company Number: 02562865
Correspondence address: Palmerston House Farren Court, The Street, Cowfold, West Sussex, England, RH13 8BP
© 2026 Damp Experts Group Ltd. All rights reserved. | Company Number: 02562865
Correspondence address: Palmerston House Farren Court, The Street, Cowfold, West Sussex, England, RH13 8BP