Specialist Dry Rot Investigation & Diagnostic Reporting Across London, Kent and East Sussex
Dry rot is one of the most serious forms of timber decay found in UK buildings. When left untreated, it can spread rapidly through masonry, plaster, and concealed voids compromising structural integrity and causing significant repair costs. A professional dry rot survey provides accurate diagnosis, clear identification of moisture sources, and practical, evidence‑based recommendations to ensure the problem is fully resolved and cannot return.
As qualified timber specialists, Damp Solve Surveying delivers thorough, methodical dry rot investigations trusted by homeowners, landlords, agents, and property professionals.
Dry rot (Serpula lacrymans) is a destructive wood‑decaying fungus that thrives in damp, poorly ventilated environments. It can:
- Break down structural timbers
- Spread across masonry and plaster
- Travel through hidden voids
- Cause significant structural weakening
- List Produce spores that spread rapidly
Unlike wet rot, dry rot has the ability to transport moisture, allowing it to grow across dry materials in search of new timber.
This makes accurate diagnosis and moisture control essential.
Dry rot is always a symptom of a moisture problem not the cause. Identifying and resolving that moisture source is the key to long‑term success.
Many clients discover wet rot only after noticing soft floors or damp smells. Our surveys provide clarity, accuracy, and confidence.
- Cuboidal cracking in timber
- Soft, crumbly, or brittle wood
- A mushroom like fruiting body (rust red with white edges)
- White or grey cotton wool like mycelium
- A musty, fungal smell
- Timber shrinking or warping
- Cracking or discoloured plaster
- Dampness in sub floor or concealed areas
- Rust coloured spore dust
Dry rot can be hidden behind walls, under floors, or within voids early diagnosis is essential.
Timber Condition
- Floor joists, wall plates, and structural timbers
- Skirting boards, architraves, and joinery
- Roof timbers (where accessible)
- Timber moisture content and decay patterns
Fungal Identification
- Mycelium type and growth pattern
- Fruiting bodies and spore production
- Distinguishing dry rot from wet rot or other fungi
Environmental Conditions
- Humidity and temperature
- Airflow pathways
- Thermal bridging and cold spots
Moisture Sources
- Leaks, plumbing defects, and water ingress
- Sub floor ventilation performance
- Damp proof course bridging
- External defects (pointing, gutters, ground levels)
- Condensation and humidity issues
Diagnostic Tools Used
- Hygrometers
- Moisture meters
- Borescopes (where required)
- Thermal imaging (optional add on)
- Data logging (optional add on)
- Ventilation testing (optional add on)
- Summary of findings
- Fungal identification and activity assessment
- Moisture readings and analysis
- Photographs and evidence
- Structural risk assessment
- Practical recommendations for repair
- Guidance on moisture control and ventilation
- Optional add on results (thermal imaging, data logging, ventilation testing)
Reports are written in a clean, modern, easy‑to‑understand format suitable for contractors, insurers, and property professionals.
