Damp Proofing and Timber Repairs - North Wales

Peter Cox has been carrying out expert surveys and treatments for homeowners and businesses across North Wales for over 70 years, identifying and offering effective solutions for a wide range of property problems.

Our experienced surveyors and technicians are experts in diagnosing and treating damp problems, condensation and mould, timber decay and woodworm, as well as structural faults and wall tie corrosion.

We will provide you with thorough advice on the problem affecting your property, along with recommendations to solve the problem and protect the long-term health and value of your property.

If you suspect damp or timber damage in your North Wales property, Peter Cox offers comprehensive professional damp surveys to pinpoint the exact cause and deliver clear, actionable recommendations.

Our detailed inspection covers both the interior and exterior of your building, ensuring external defects, which often allow moisture to seep inside, are caught early. Using advanced diagnostic tools, including moisture meters and thermal imaging cameras, our surveyors accurately identify damp and condensation, while thoroughly checking all accessible timbers for signs of fungal decay or woodworm.

We schedule appointments at a time that works best for you, allowing us to discuss your specific concerns in detail. Following the visit, you will receive a comprehensive report outlining only necessary treatments. For added peace of mind, most of our remedial work is backed by a 20-year guarantee to ensure long-term protection.

Damp proofing is a common requirement across North Wales, mainly due to the age and condition of properties, as well as the levels of rainfall throughout the year.

Damp proofing can be required for problems such as rising damp, penetrating damp, condensation and mould.

If you think you have a damp problem, we can carry out a survey to identify the type of damp causing the issue, and the extent of treatments required. Once this has been carried out, we can offer professional treatments that protect your property long term.

If work is required, our technicians who are skilled in specialist damp proofing and joinery will carry out repairs to the highest industry standards.

Peter Cox technicians will minimise dust and debris, leaving your property as tidy as possible once treatments are undertaken. They are equipped with dust extraction units, vacuums, floor coverings and sheeting to protect your home.

Across North Wales, Peter Cox provides expert diagnosis and specialist treatment for both wet rot and dry rot in homes and commercial premises.

To determine the full extent of fungal decay and provide effective solutions, our qualified surveyors carry out thorough timber inspections. Decay develops when prolonged moisture enables spores to germinate and feed on structural wood, a common issue caused by poor ventilation, leaking plumbing, or water ingress from damaged roofs and gutters.

Wet rot thrives in continuously damp environments, leaving timber soft, cracked, or discoloured. It remains localised around the moisture source, such as plumbing leaks, roof defects, condensation, or rising damp.

Dry rot (Serpula lacrymans) is far more invasive, capable of traveling through masonry to compromise uninfected areas. It flourishes in hidden, poorly ventilated spaces like subfloors and wall cavities, often causing extensive damage to timber before being noticed.

Because wet rot and dry rot require completely different remedial techniques, an accurate survey by a trained professional is essential to identify the precise fungal decay affecting your building.

Peter Cox provides expert solutions for fungal decay in North Wales, so if you’re worried about a wet rot or dry rot problem in your property, we’re here to help.

We can provide you with specialist advice and long term solutions.

After a detailed survey, we provide clear advice on the condition of your timber and what needs to be done. Our treatments focus on stopping the source of moisture and repairing or replacing affected wood to prevent the problem from returning.

Treatment may include:

• Removing the source of moisture. This can be through damp proofing, ventilation improvements, or fixing building defects
• Cutting back decayed timber and applying targeted fungicidal treatments where required
• Cleaning all affected areas of surface growth, including hyphae, mycelium and fruiting bodies, and sterilising walls and masonry where required

Our treatments are carried out by experienced technicians who work to the highest industry standards. At Peter Cox, we’re committed to protecting your property’s structure and value with expert wood rot treatments you can rely on.

Left untreated, woodworm can cause severe damage to both decorative and structural timber. The most common woodboring beetle (woodworm) in the UK is the Common furniture beetle (Anobium punctatum).

A qualified surveyor from our local branch covering North Wales will carry out a thorough timber survey to identify any woodworm infestation in your property and specify professional treatments if the issue is active.

Early detection is essential to prevent further timber degradation and keep your building safe and structurally sound. Following the visit, our local specialist will supply a detailed survey report outlining all findings and any necessary action.

Properties with original structural timber are particularly vulnerable to woodworm, especially where poor ventilation or elevated moisture levels are present.

If one of our surveyors identifies an active woodworm infestation, and you wish to go ahead with the treatment, we can eliminate the infestation and protect your timber, preserving the structural integrity of your property:

• The first step is a timber survey to accurately identify the woodworm species present, assess the extent of the infestation, and any associated moisture source.
• The findings and treatment process will be detailed in the survey report.
• This usually involves the application of a surface insecticidal treatment to affected timbers - applied by spraying, fogging, or brush treatment - which kills the eggs, larvae near the surface, and the beetles on contact as they exit the timbers.
• Timber repair and replacement may be necessary in cases of severe infestation or associated fungal decay, restoring structural strength.

Converting a basement or cellar is one of the most effective ways for homeowners to expand their living space and increase property value across North Wales.

Because below-ground structures are naturally vulnerable to damp and water ingress, professional structural waterproofing is essential to guarantee a dry, well-ventilated, usable environment and protect your property's integrity.

Peter Cox provides comprehensive basement waterproofing solutions designed fully in line with British Standard 8102 (BS 8102). Our team of CSSW-qualified surveyors can assist at any stage of your conversion, whether collaborating early with your architect on initial design plans or inspecting an existing basement structure.

Peter Cox offers a range of basement waterproofing solutions tailored to North Wales properties, designed to create dry and usable spaces:

• Type A cementitious tanking systems for robust barrier protection
• Type C cavity drain membrane systems (CDM) for effective water management, complete with sump and pump installations
• Combined waterproofing systems for high-risk environments and compliance with NHBC Chapter 5.4, requiring maximum moisture protection

Cracks in your property's brickwork can often point to underlying structural problems or the need for wall tie replacement.

Across North Wales, many buildings require structural repairs due to age, natural wear and tear, or external causes like water damage, vibrations, flooding, and subsidence. When wall ties corrode and fail, the inner and outer leaves of a cavity wall lose their connection. This can cause walls to bow, bulge, and eventually risk total collapse.

Peter Cox carries out comprehensive structural inspections to evaluate your wall ties and overall building stability, supplying clear recommendations and repair proposals where necessary. Working alongside structural engineers when required, we are approved installers of specialist Helifix structural tie systems to ensure your property remains secure.