PCA CERTIFIED

Wet Rot Treatment in London

Dampstar provides reliable, local wet rot treatment for homeowners and landlords in and around London. From damp and timber survey to thorough treatment and prevention, we’re committed to protecting your property’s structure, giving you peace of mind that your property is dry.

What is Wet Rot?

Wet rot is fungal decay affecting timber exposed to persistent moisture, often from leaks, poor ventilation, or damp penetrating walls and floors. Unlike dry rot, it typically stays localised, but left untreated it weakens timber, making it soft, spongy, or crumbly. Signs include darkened, damp-looking wood, a musty smell, and visible fungal growth. It usually points to an underlying moisture problem that needs addressing alongside timber treatment, so early identification is important.

repairing wet and dry rot

Signs You Have Wet Rot

Wet rot can develop unnoticed until timber is weakened, so watch for:

  • Timber that feels soft, spongy, or crumbles under light pressure
  • Dark brown or black staining
  • A damp, musty smell
  • Shrinkage, cracking, or warping of timber
  • Fungal growth on skirting boards, window frames, or floor joists
  • Cracked, flaking, or bubbling paint on wood

If you notice any of these, contact us for a professional inspection before the damage spreads.

How to Treat Wet Rot

Wet rot shouldn’t be covered up with a quick fix, as this only masks the problem and adds more cost later. At Dampstar, we take a survey-led approach, so any treatment addresses the root cause rather than just the symptoms.

A thorough damp survey

Before any work begins, we carry out a paid survey of your property to confirm the cause and extent of the wet rot. This is especially important if you’re buying, selling, or letting a property, as this gives you professional advice, clarity and certainty that your damp concerns will be resolved.

A detailed, no-obligation quotation

If wet rot is found during the survey, Dampstar will provide you with a clear, itemised quotation for the recommended repairs, at no extra cost. This means you know exactly what’s involved and what it will cost before any work starts.

Targeted treatment based on survey findings

Rather than a one-size-fits-all solution, treatment is tailored to what the survey uncovers, whether that’s installing a damp proof course or addressing the root cause identified. This ensures the problem is properly resolved, not just temporarily masked.

Why Choose Dampstar?

As a trusted, expert local team, we combine traditional craftsmanship with modern methods, delivering reliable, on-time damp proofing results property owners can depend on.

Expertise

Our team has many years of hands-on experience dealing with all types of damp in London’s unique building landscape.

Honest assessments

We provide clear, transparent reports and never recommend work you don’t need.

Guaranteed work

Many of our services come with long-term guarantees for your peace of mind.

Full compliance

All our damp-proofing treatments are fully compliant with UK building regulations and industry standards.

Our excellent reputation

Our many 5 star Google reviews speak for themselves.

Trusted, PCA Certified Damp Proofing Services

Accreditations & Certifications

Our accreditations reflect our commitment to the highest standards in damp proofing, waterproofing and timber preservation. As PCA-certified damp and timber surveyors, we follow industry best practices, use proven methods and deliver work you can trust. Explore our professional accreditations and see why homeowners, landlords and commercial clients choose Dampstar.

What Our Clients Say

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Louis Govender profile picture
Louis Govender
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Very professional from outset in term of survey, report and quotation. Workmanship outstanding. Will recommend Dampstar anytime rgds Louis Govender
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Jo Ellaway profile picture
Jo Ellaway
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Everyone at Dampstar, Andrew, Charlene and Defrim is super helpful, knowledgeable and friendly. Their service is professional, prompt and everything is explained really well. It took several tries to find a company I felt I could trust and I am very happy I chose. them.
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Anusuya Raghavan profile picture
Anusuya Raghavan
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Andrew, Charlene & Defrem were professional from start to finish. The survey was booked in days, the quote quickly followed. It was clearly set out and itemised. I had questions which were all answered promptly. Importantly the work was done to schedule with my home left clean and tidy.
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Gurpinder singh flora profile picture
Gurpinder singh flora
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The workmanship was outstanding and everything was completed on schedule. Our loft is now a beautiful extra bedroom with plenty of light.
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Angad Garcha profile picture
Angad Garcha
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Andrew was great at highlighting the rising damp problem and advising on how to avoid future problems. The quote was clear, reasonable and carried out quickly and efficiently with a guarantee. Great service overall from Andrew and team.
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Ahlam Akram profile picture
Ahlam Akram
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for the past 7 years and probably 6 payments to different companies .. I was desperate and lost my trust to all .. Dampstar did the job.. most reliable and trust worthy exactly within the time frame allocated to the job.. so Grateful to them..

Damp Proofing in London Since 1960

Dampstar are based in Chiswick, West London, but provide wet rot across the whole of London and Hertfordshire.

Our Services

Dry rot is a serious fungal decay that can spread through timber and masonry even without direct moisture. 

Woodworm refers to wood-boring beetle larvae that tunnel through timber, weakening its structure over time. 

Moisture can lead to wet rot, dry rot and woodworm infestations, putting your property’s structural timber at risk. 

Damp can lead to mould growth, damaged plaster, timber decay and poor indoor air quality if left untreated.

Effective waterproofing protects your property from water ingress, damp, mould and costly structural damage. 

Wet Rot Treatment FAQs

How do I know if I have wet rot?

Look for timber that feels soft or spongy, dark staining, and a damp, musty smell and cracking, shrinkage, or fungal growth may also appear. A professional inspection can confirm the extent of the damage.

Wet rot is caused by prolonged moisture exposure, usually from leaking pipes, roof defects, blocked gutters, or damp penetrating walls and windows. Poor ventilation makes timber more vulnerable by letting moisture linger. Addressing the source is essential, as treating timber alone won’t stop it recurring.

Treatment starts with resolving the moisture source, whether a leak, blocked gutter, or damp penetration. Affected timber is then removed or treated, and replacement wood is often pre-treated with preservatives. Addressing the underlying cause is essential to prevent the rot returning.

Yes, if the moisture source is properly identified and fixed alongside removing or treating affected timber. But if the underlying cause, such as a leak or poor ventilation, isn’t addressed, wet rot is likely to return.

It depends on how extensive the damage is as minor cases may only need localised treatment, while more severe rot can involve removing and replacing wood, plaster, or flooring. A professional survey will give a clearer picture of what’s involved.

Dampstar provides wet rot treatment throughout London and across Hertfordshire, supporting homeowners, landlords and property professionals with expert surveys and remedial solutions.

Book A Survey

    DAMPSTAR

    295 Chiswick High Road,
    Chiswick, London,
    W4 4HH

     

    Email us: admin@dampstar.co.uk

    Call us: 07376 700073

    Hours

    • Mon 08:00 – 17:00
    • Tue 08:00 – 17:00
    • Wed 08:00 – 17:00
    • Thu 08:00 – 17:00
    • Fri 08:00 – 17:00
    • Sat 09:00 – 17:00
    • Sun Closed