Dry Rot Treatment Specialists in Dorset and Hampshire - Specialist eradication, structural timber repair, and long-term prevention
Dry rot is one of the most destructive forms of timber decay and requires specialist diagnosis and containment to be treated effectively. Unlike other forms of decay, dry rot can spread beyond the original moisture source and travel through masonry, causing extensive hidden damage. At Proofterior, all dry rot treatments are survey-led and evidence-based, delivered by our in-house specialists using proven methods designed to fully eradicate the outbreak and prevent recurrence.
Dry rot is a fungal decay caused by Serpula lacrymans, which thrives in damp, poorly ventilated environments. Once activated, it can transport moisture through its mycelium, allowing it to spread beyond visibly damp areas. Affected timber may become:
- Brittle, cracked, or crumbling timber
- Distinct mushroom-like smell
- Rust-coloured fungal spores (dust)
- Cotton-like fungal growth (mycelium)
- Warped or distorted timber surfaces
Unless the moisture source is correctly identified and eliminated, dry rot will continue to form even after timber replacement.
Dry rot develops when timber is exposed to moisture and restricted airflow. Common causes include:
Long-term leaks or penetrating damp
Poor ventilation in voids or enclosed spaces
Condensation-related moisture build-up
Blocked or sealed airflow routes
Even after the original moisture source dries out, dry rot can continue to spread if conditions remain favourable.
Dry rot is often underestimated or misdiagnosed, leading to ineffective treatment. Local timber replacement or surface fungicides fail because they do not address the full extent of fungal spread. Common ineffective approaches include:
Treating only visible timber damage
Ignoring fungal growth within masonry
Failing to improve ventilation conditions
Using non-specialist treatments
Without full investigation and containment, dry rot frequently reappears.
Our Dry Rot Treatment Process
Every property is unique, and so is our approach. Dry rot is treated using a structured, containment-led process designed to identify the full extent of fungal growth, eliminate the moisture source, and prevent recurrence.
A detailed inspection is carried out to assess the condition of structural and internal timbers, identify the extent of decay, and determine the source of moisture causing wet rot. Surrounding fabric and environmental conditions are also reviewed to understand contributing factors.
Survey findings are analysed to confirm dry rot presence, extent, and activity. A tailored treatment plan is then specified based on the property construction and severity of infestation, with a clear explanation provided before works commence.
Infected timber is removed and disposed of in accordance with best practice. Specialist fungicidal treatments are applied to affected timber and masonry, and treated replacement timber is installed where required. Moisture sources are addressed through damp-proofing or ventilation improvements.
Preventative measures are implemented to reduce future risk, including timber preservation, improved airflow, and environmental control. All works are supported by clear reporting, aftercare guidance, and insurance-backed guarantees for long-term protection.
Areas We Cover
Proofterior provides independent damp surveys and specialist damp proofing services across Dorset, Hampshire, and surrounding areas. We work with homeowners, landlords, property managers, and buyers who need clear answers, accurate diagnosis, and long-term solutions, not guesswork or sales-driven recommendations.
Frequently Asked Questions About Dry Rot
What is dry rot?
Dry rot is a destructive fungal decay that rapidly spreads through timber, severely compromising structural integrity if untreated.
Is dry rot dangerous?
Yes. If untreated, dry rot weakens timber structures, leading to potential structural collapse or severe damage.
How do I stop dry rot from spreading?
Professional intervention is essential. Proofterior eliminates dry rot by removing affected timber, treating remaining timber, and controlling moisture.
Does dry rot treatment come with a guarantee?
Absolutely. We offer insurance-backed guarantees on all dry rot treatments and repairs.