PCA CERTIFIED

Dry Rot Treatment in London

At Dampstar, we offer expert dry rot identification and treatment, built on understanding the cause before recommending next steps. Every property is different, so our damp and timber surveys are central to every project we work on.

What is Dry Rot?

Dry rot is a wood-destroying fungus that thrives in damp, poorly ventilated spaces, often going unnoticed until real damage is done. Unlike other forms of rot, it can travel through brickwork in search of moisture, making it especially hard to contain. Warning signs include a musty smell, soft or crumbling wood, and a cotton-like growth. Left alone, it can weaken a building’s structure, so catching it early makes a big difference.

fixing dry rot

Signs You Have Dry Rot

Dry rot can be hard to spot until it’s taken hold, but watch for:

  • A musty or damp smell
  • Soft, spongy, or crumbling wood
  • Deep cracking across the timber grain
  • Fine, reddish dust on or around affected wood
  • Grey, cotton-wool-like strands
  • Fungal growth resembling a mushroom, often white or grey in colour.

If you notice any of these, contact us for an inspection  as soon as possible.

How to Treat Dry Rot

Dry 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 dry 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 dry 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 dry rot treatment across the whole of London and Hertfordshire.

Our Services

Wet rot occurs when timber is exposed to prolonged moisture, causing it to soften and decay. 

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. 

Dry Rot FAQs

How do I know if I have dry rot?

Signs include a musty, damp smell, soft or crumbling timber, cracking across the wood grain, grey thread-like growth, a white cotton-like growth, or an orange dust  on surfaces. If you spot any of these, contact us urgently for an inspection.

Dry rot is caused by a fungus that thrives in damp, poorly ventilated conditions, typically developing where moisture builds up in timber due to leaks, poor drainage, or condensation. Once established, it can spread through walls and brickwork in search of moisture, so early detection is important.

Treatment usually starts with identifying and removing the source of moisture, as dry rot cannot survive without it. Affected timber is typically removed and replaced, while surrounding areas may need specialist fungicidal treatment. A thorough survey helps ensure the full extent of the problem is addressed, not just the visible signs.

Yes, if the moisture source is properly identified and fixed alongside removing fungus or treating affected timber. But if the underlying cause, such as a leak, rising or penetrating damp, or condensation, isn’t addressed, dry rot is likely to return.

Some disruption is likely, particularly if affected timber or plaster needs removing. The extent depends on how far the rot has spread, a proper survey will give a clearer picture before work begins.

Dampstar provides rising dry 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