Damp Proofing Specialists in Chester
Quirks Property Maintenance Ltd are trusted damp proofing specialists in Chester, providing expert solutions for rising damp, penetrating damp, condensation, black mould, wet rot, dry rot, basement waterproofing and structural damp issues.
We cover Chester, offering full damp surveys, treatment, waterproofing, timber repairs, plastering and restoration β all completed by our own approved team (no subcontractors).

What Causes Damp in Chester?
Damp occurs when moisture enters a property faster than it can escape. Main causes include:
- Rising Damp β moisture rising up through walls due to a failed or missing damp-proof course (DPC).
- Penetrating Damp β rainwater entering through damaged brickwork, render, roofs or cavities.
- Condensation β moisture from cooking, showers, drying clothes and breathing meeting cold surfaces and forming water droplets and black mould.
- Basement Damp & Hydrostatic Pressure β underground moisture pushing through walls/floors.
- Cavity Wall Bridging β debris or insulation bridging across cavities and bypassing the DPC.
- Hygroscopic Salts β salts within plaster attracting moisture even when surfaces appear dry.
Types of Damp We Treat in Chester
Rising Damp
Groundwater travels up walls by capillary action. Symptoms include tide marks, salt deposits, flaking plaster and damp skirting boards.
Treatment: Chemical DPC injection, removal of salt-contaminated plaster, waterproof render or renovating plaster, and full plaster skim.
Penetrating Damp
Caused by defects in roofs, walls, gutters, chimneys or pointing. Appears as damp patches on walls or ceilings, often after rain.
Treatment: Repairing external defects, repointing brickwork, applying Stormdry water-repellent, and restoring internal finishes.
Condensation & Black Mould
Warm moist air hits cold surfaces and forms condensation. If humidity stays high, black mould appears (commonly in bedrooms, bathrooms, kitchens).
Treatment: Positive Input Ventilation (PIV), DMEV fans, trickle vents, vapour barriers, thermal insulation and moisture control.
Basement & Cellar Damp (BS8102 Waterproofing)
Below-ground rooms are prone to constant moisture pressure.
Solutions: Cementitious tanking systems, cavity drain membranes, perimeter channels and sump pumps β fully compliant with BS8102:2022.
Cavity Wall Damp & Bridging
Remedy includes removing debris, installing weep vents, lowering external ground levels and reinstating correct cavity drainage.


Timber & Structural Damp Services in Chester
Wet Rot & Dry Rot
Timber decay caused by excessive moisture.
- Wet Rot: Soft, spongy wood.
- Dry Rot: More serious β fungus spreads through walls and timber.
Treatment: Remove damaged timber, apply fungicidal solution, improve airflow and correct moisture source.
Wood Rot & Timber Preservation
Repair or replace damaged joists, beams and floors. Apply timber preservatives and improve ventilation to prevent reoccurrence.
Resin Beam End Repairs
Cost-effective alternative to full beam replacement. Decayed beam ends are cut back and replaced using high-strength resin and reinforcement bars.
Woodworm Treatment
Beetle larvae bore into timber, leaving exit holes and frass.
Treatment: Survey to identify species, apply professional insecticide treatment, replace severely damaged wood if required.
Specialist Damp Treatments in Chester
Chemical Damp Proof Course (DPC) Injection
- Drilled into mortar at approx. 150mm above ground
- Silane/siloxane cream injected to form a waterproof barrier
Stormdry Masonry Protection (25-Year Breathable Water Repellent)
- Stops penetrating damp and driving rain
- Improves thermal efficiency of external walls
- Prevents frost damage and brick spalling
- Breathable and colourless once cured
- BBA certified and approved by Safeguard Europe
Basement Tanking & Cavity Drain Membranes
- Cementitious tanking slurry or Type C cavity drain waterproofing
- Perimeter drainage and sump pump systems
- BS8102 compliant for habitable basements and cellars
Salt-Resistant Plastering & Renovation Works
- Remove damp/salt-damaged plaster
- Replace with waterproof sand & cement render or renovating plaster
- Skim finish ready for decoration
Ventilation & Condensation Solutions
- PIV systems (Positive Input Ventilation)
- DMEV fans (constant running extract)
- Trickle vents, air bricks, vapour barriers, insulated plasterboard
Basement Conversions
Once waterproofed, we convert basements into usable rooms with insulation, plasterboard, electrics, flooring and heating β fully building regulations compliant.

β Frequently Asked Questions
How do I know if it’s rising damp or penetrating damp?
- Rising damp: tide marks up to 1m, salts, skirting board rot.
- Penetrating damp: random patches, often worse after rain.
Can I paint over damp or mould?
No. It will return unless the moisture source is fixed first.
What causes condensation?
Moisture from breathing, showers, cooking, drying clothes indoors. If it hits cold surfaces, it becomes water droplets β mould.
Do you offer guarantees?
Yes β long-term and insurance-backed guarantees available on approved DPC, Stormdry and basement systems.
β Health Risks of Damp & Mould
- Black mould (Aspergillus) releases spores that affect breathing
- Can trigger asthma, allergies, coughing and skin irritation
- NHS recommends treating damp promptly to prevent health issues
- Children, elderly and people with respiratory conditions are most at risk

π Book a Damp Survey in Chester
Noticed damp patches, mould, musty smells or crumbling plaster? Donβt wait β damp spreads and causes more damage the longer itβs left.
π We offer affordable damp surveys with full written reports.
π Contact: info@quirksonline.co.uk / (01244) 638219
Weβre happy to provide honest advice and no-obligation quotations.
β Why Choose Quirks Property Maintenance Ltd?
- β Over 20 years of damp proofing experience
β’ β PAM TIES and Safeguard Approved Contractors
β’ β Trained by Paul Hughes (CSSW β Certified Surveyor in Structural Waterproofing)
β’ β Specialists in Rising Damp, Penetrating Damp, Condensation, Wet Rot & Dry Rot
β’ β Fully insured, Health & Safety compliant and Building Control approved
β’ β All work completed by our in-house team
β’ β Long-term guarantees available on approved installations
β’ β Covering Flintshire, Chester, Wrexham, Cheshire, Denbighshire, Conwy, Wirral & North Wales
π Areas We Cover
Flintshire β’ Mold β’ Deeside β’ Hawarden β’ Buckley β’ Ewloe β’ Wrexham β’ Chester β’ Ellesmere Port β’ Wirral β’ Ruthin β’ Denbigh β’ Prestatyn β’ Rhyl β’ Conwy β’ Llandudno β’ Cheshire β’ North Wales and surrounding areas.

