Damp Proofing in Exeter & South Devon
Damp Proofing delivered by J&J Contractors across Exeter and South Devon. Backed by our 10-year written guarantee.
Damp Proofing
What is Damp Proofing?
Damp proofing is the process of diagnosing and treating moisture problems in a building, then putting measures in place to stop them coming back. There are three main types of damp. Rising damp happens when ground moisture travels up through walls, usually because a damp proof course has failed or been bridged by raised ground levels. Penetrating damp is caused by water getting in from outside through faults such as cracked render, damaged pointing, leaking gutters or blocked downpipes. Condensation, the most common cause of damp and mould in UK homes, occurs when warm, moist air inside meets cold walls and windows. Each needs a different solution, which is why the most important part of damp proofing is getting the diagnosis right. At J&J Contractors, we tackle damp in homes across Exeter, Topsham, Tiverton and Crediton, as well as Exmouth, Teignmouth, Newton Abbot and Torbay. Our work ranges from damp proof course injection and replastering with suitable plasters, to fixing external defects and improving ventilation. Many homes in Devon are older properties with solid stone, cob or brick walls, so we take care to recommend treatments that suit the building rather than causing new problems.
Damp Proofing
When to Choose Damp Proofing?
Damp proofing is needed as soon as you notice the signs of moisture getting into your home. Look out for tide marks or stains on the lower part of walls, peeling wallpaper, bubbling or flaking paint, crumbling plaster, white salt deposits, a musty smell and black mould around windows, corners and ceilings. Rotting skirting boards and floorboards can also point to a damp problem. Older properties across Exeter, Topsham, Crediton and Tiverton are particularly prone, as many were built without modern damp proof courses, or have had their natural breathability reduced by cement render, plastic paints and raised garden or patio levels. Coastal and hillside homes in Teignmouth, Dawlish, Torquay and Brixham face heavy, wind-driven rain, which can find its way through cracked render, poor pointing or failed seals. Condensation and mould are common in homes of all ages, especially where windows have been replaced, chimneys blocked up or ventilation is limited. Damp isn't just unsightly. It can damage plaster, timber and decorations, make a home harder to heat and contribute to health problems, especially for children and anyone with breathing conditions. Tackling it early is far cheaper than dealing with rot and major repairs later.
Damp Proofing
What is Required for Damp Proofing?
Effective damp proofing starts with an accurate survey. At your free visit, we'll inspect the affected areas inside and out, take moisture readings, check ground levels, gutters, downpipes, render and pointing, and look at how your home is heated and ventilated. We'll then explain what's causing the damp and recommend the most appropriate fix, rather than a one-size-fits-all treatment. For rising damp, that may mean lowering external ground levels, injecting a new damp proof course and replastering with a suitable plaster. For penetrating damp, we repair the defects letting water in, such as cracked render, failed pointing or leaking rainwater goods. Condensation is usually solved by improving ventilation, for example with extractor fans or trickle vents, alongside insulation to warm up cold surfaces. In older solid-walled homes, we often recommend breathable lime-based solutions instead of impermeable ones that can trap moisture. Damaged plaster is removed and walls are allowed to dry before replastering and redecorating. We protect your home throughout and leave everything clean and tidy. All damp proofing work across Exeter, Exmouth, Sidmouth, Paignton, Cullompton and South Devon is backed by our 10-year written guarantee. Call 07476 554105 to book your free damp survey.
Recent Work — Damp Proofing
Completed damp proofing project across Exeter and South Devon.
Testimonials & Feedback
What Our Clients Say About Our Damp Proofing
Verified 5.0 Google rating across Exeter and South Devon
Our Process
Our process
01
Free Consultation & Survey
Personalised on-site survey and transparent pricing for Damp Proofing across South Devon.
02
Surface & Groundwork Prep
Meticulous ground excavation, structural preparation, and property protection.
03
Trade-Certified Installation
Installed to highest trade standards with premium British-weather resilient materials.
04
Cleanup & 10-Yr Guarantee
Thorough site clean, comprehensive sign-off, and your 10-Year Written Guarantee.
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External Rendering
Weatherproof external rendering for homes across Exeter and South Devon, including silicone, monocouche, sand and cement and lime render for older properties.
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Professional interior and exterior painting and decorating across Exeter and South Devon, with careful preparation, crisp lines and a spotless clean-up.
Internal Wall Insulation & Thermal
Internal wall insulation for solid-walled homes across Exeter and South Devon, cutting heat loss, warming cold rooms and lowering energy bills.
Covering Exeter, Topsham, Tiverton, Sidmouth, Teignmouth, Dawlish, Newton Abbot, Torbay and rural Devon.
Tell us about your project
A lasting transformation backed by a 10-year guarantee.
From new boundary fencing and porcelain patios to driveways, plastering and decorating — get in touch with the team today for a free on-site consultation.