How Our Experts Diagnose & Treat Timber Rot

Qualified, experienced professionals lead Prokil’s timber surveys. We specialise in diagnosing the causes and extent of timber decay. A CSRT or CSTDB-accredited surveyor conducts every inspection in line with current PCA standards.

Our Treatment Procedure

All jobs are completed by trained technicians. They adhere to British Standard BS 8417:2011 for preservative-treated timber. Where dry rot is present, we also follow PCA treatment guidance.

1. Locate & Remove the Source of Moisture: This may include repairing defective plumbing, leaking roofs, or high ground levels near external walls.
2. Cut Back Affected Timber: All decayed material is removed, extending at least 500mm beyond visible signs of rot to prevent reoccurrence.
3. Sterilise Surrounding Areas: For dry rot, masonry, subfloors, and wall surfaces, a PCA-approved fungicidal biocide is used for treatment.
4. Treat Retained Timber: All retained wood is treated with a deep-penetrating, industry-approved fungicide. This is compliant with COPR regulations.
5. Install Replacement Timbers: New timbers are pre-treated and have sealed cut ends. These are fitted to match the original load-bearing specification.

You get a report that includes photos, moisture readings, and a complete list of suggested repairs. Reports are useful for insurance claims, mortgage lending, and planning property maintenance.

All work is completed with minimal disruption and backed by a Prokil 20-year Guarantee where eligible.

What You Can Expect from a Timber Rot Treatment with Prokil

Every Prokil treatment is built on structure, clarity, and compliance. From your first call to the final guarantee, we offer a professional service based on evidence, customised for every property.

In addition to clear communication, you can expect:

• A qualified timber and damp surveyor to carry out your site visit
• A written report including moisture readings, photographs, and remedial recommendations
• Honest, technical advice with no commission-based sales tactics
• Timely updates and coordination from a named point of contact
• Reports formatted for mortgage lenders, insurers, or property managers

Following treatment, we provide detailed aftercare information and issue your 20-year Prokil Guarantee. This document outlines the work done, the areas treated, and the biocidal product used. It offers long-term reassurance and evidence of compliance should the property be sold or revalued in future.

With us, there are no commissioned salespeople, only clear, professional advice. Our team works with homeowners, landlords, surveyors, and property experts in the South of England and Wales. Every project is handled with the same care, precision, and professionalism that has built our reputation over the decades. Are you concerned about timber decay, or do you require a formal assessment?

Call 0800 048 9488 or book a survey with a Prokil specialist today.