Problem of Wet Floorboards

How to Fix Wet Floorboards: Causes, Prevention, and Repair

Causes of Wet Floorboards

Many issues can cause floorboards to appear wet or become damp. It's important to find the cause in order to solve the issue before it becomes worse and results in wet rot, mould growth or even woodworm.

Rising damp and Penetrating Damp

Rising damp and penetrating damp can cause water damage in floorboards. It is important to check and rule these out as the cause of your damp wood flooring. Rising damp can be seen usually as wet patches and moisture rising up the lower part of walls (in a ground floor room) rising from the ground level. Penetrating damp enters through the brickwork higher up the wall and can damage internal walls, building materials and masonry externally!  


Condensation is a common problem that can lead to dampness and moisture in the air settling in the walls and floors, causing damp flooring. Signs of poor ventilation include wetness on windows and sometimes walls as well as the floor and ceiling. The moisture in the air hitting a cool surface causes water to gather. Sometimes this warm moist air can be soaked through the carpets and even the floorboard. The best way to deal with condensation in the early stages is following steps to ensure your room is ventilated adequately and give it a chance to dry out. If after drying, the condensation persists, it may be better to contact a specialist.  

Leaking Pipes

Leaking pipes and faulty construction materials can also contribute to wet floor boards. It may be necessary to check any pipework in and around the affected area, including under the floors. Wet Floorboards causes  

Identifying Water Damage in Floorboards

Signs of water damage in your floorboards includes discoloured wood, musty odours, and a feeling of moisture. If you have vinyl or laminate flooring, you may also notice lifting, bubbling or movement in your flooring. Inspecting for decay, mould and rot underneath the flooring is crucial to prevent further damage to the floorboards and health hazards that can be caused by mould spores. It would certainly be worth lifting the flooring and checking the underside of a few floorboards to check for signs of damp wood flooring. a rotten board may not have obvious signs that you can see without lifting. Rotten floorboards caused by a pipe leak, for example, may be damp underneath. In addition, check for peeling paint, sodden wood and swollen or warped timber joists in any areas you suspect may have damp.  

Preventing Water Damage in Wood Flooring

Maintaining good ventilation is essential to prevent moisture buildup in the floor. For example, in a bathroom or kitchen, ensure the use of an appropriately sized extractor fan to prevent a build up of steam in the air. Open windows and doors if the room becomes too steamy in order to prevent the moisture from settling on the cold surfaces. A damp proof membrane (DPM) is often recommended in between your subfloor and wood floors to prevent moisture transfer.   Applying a wood preservative or sealant can protect your floorboards but consulting a professional damp proof expert is the only sure way that you can protect the floor from damp and wood rot.

Repairing Wet Floorboards

Once you have noticed a rotten floorboard, damp patches, holes or wet rot - it is important to act quickly to repair the damage as well as ensuring that you prevent further damage.   Drying the wood floor quickly is essential to reduce permanent damage. You can use a dehumidifier and fans to speed up the drying process and ensure the entire floor is completely dry.   Replacing rotten floorboards may be necessary if the decay is severe. However, simply replacing the floorboards will not solve the problem. It’s important to ensure that both the existing and new floorboards are protected against damp, wet rot and other issues that can damage your floor. Depending upon the cause of your damp problem, it may be best to get the advice of a professional or have a full damp survey carried out in order to protect your floorboards in the future and prevent the problem from recurring.

Wood Floor Maintenance Tips

  • Regularly inspect the floorboards for signs of damp and water damage.
  • Ensure good ventilation and maintain a dry environment to prevent moisture buildup on your floor.
  • Use a moisture meter to check the moisture content of the floor boards and ensure they are completely dry.
  • Consider hiring a damp surveyor to identify and treat damp issues in the floor. Causes of Wet Floorboards

When Is It Time To Call In The Professionals?

Whether you have rotten floorboards, have had problems with flooding, condensation, rising damp or you just want to make sure your house is fully protected against rot and your home is structurally sound for as many years as possible… calling a damp surveyor will give you that peace of mind. A damp proofing specialist will check every surface your property from subfloor to timber roof beams! They can advise you on whether you need to replace floorboards, treat walls and masonry, or simply improve ventilation and take preventative measures. Contact us today and make damp floorboards a thing of the past!

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Picture of Sam Fitzgerald – CSRT Damp Surveyor

Sam Fitzgerald – CSRT Damp Surveyor

Author – CSRT Damp Surveyor
Sam is a highly qualified and seasoned damp surveyor with over ten years of specialised experience. With a strong academic foundation in building surveying and numerous professional certifications, Sam has established himself as an authority in the field of damp diagnosis and remediation.

At Damp Surveyors Ltd, Sam applies his extensive knowledge to help homeowners across the UK address and solve their damp issues effectively. His approach combines cutting-edge techniques with a commitment to honest, client-focused service, ensuring that every survey and recommendation is tailored to the specific needs of the property.

As a thought leader, Sam’s insights into damp prevention and treatment have been featured in industry publications, underscoring his role as a trusted expert dedicated to maintaining the integrity and comfort of your home.

Testing device for measuring dampness in a house


At Damp Surveyors Ltd, we stand out as your premier choice for damp survey services in the UK. Our commitment to excellence and customer satisfaction sets us apart. Here’s why you should choose us:

  • Exclusive 3 Free Quotes: We offer a one-of-a-kind optional service where you not only get our top-notch damp survey but also receive 3 free quotes from vetted local companies, giving you peace of mind by saving you thousands on getting the most competitive quotes, and also time researching and contacting other reputable companies.
  • Knowledge and Experience: We provide unmatched knowledge to every survey we conduct thanks to our team of seasoned professionals and years of industry experience. This guarantees accurate assessments and practical solutions.
  • Nationwide Coverage: Whether you’re in a bustling city or a rural area, our services extend across the UK, making us accessible wherever your property is located. Choose us for nationwide reliability and excellence.

Choose Damp Surveyors Ltd as your reliable partner for all-inclusive survey needs. Our top concerns are the health and safety of your property, and we are committed to providing outcomes you can trust.

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