Damp Proofing & Mould Specialists in Southport, Liverpool and Merseyside
NW Damp & Mould Specialists Ltd is a family-run damp proofing company based in Southport, with more than 25 years' experience diagnosing and resolving damp, black mould, condensation, timber decay and water-ingress problems.
We identify the source of the moisture, recommend the correct remedial treatment and repair the affected areas to a professional standard. Qualifying damp-proofing installations are backed by our 10-year guarantee.
- 25+ years' specialist experience
- SafeContractor approved
- 4.9/5 from over 125 Google reviews
- 10-year guarantee on qualifying work
Request a Damp Assessment
Tell us where the problem is located and what signs you have noticed. A member of our team will contact you to discuss the issue and arrange a suitable inspection.
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Survey fees may apply depending on the property, the nature of the problem and whether a detailed written report is required. Any applicable fee will be confirmed before an appointment is arranged.
- 25+ years' specialist experience
- SafeContractor approved
- 4.9/5 from over 125 Google reviews
- 10-year guarantee on qualifying work
What Signs of Damp or Mould Have You Noticed?
Damp and mould can have several different causes. The location of the problem, the condition of the building and the pattern of moisture all need to be considered before the correct treatment can be recommended.
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Bedrooms
Black mould around external corners, window reveals or behind furniture, often accompanied by condensation on windows and cold wall surfaces.
Learn About Condensation and Black Mould -
Bathrooms and kitchens
Persistent condensation, mould around ceilings, sealant or window reveals, and moisture that takes a long time to clear.
Learn About Condensation and Ventilation -
Living room walls
Low-level damp staining, salt deposits, peeling decorations, crumbling plaster or deteriorated skirting boards.
Learn About Rising Damp -
Beneath suspended timber floors
Springy floorboards, musty odours, fungal growth or softened timber may indicate wet rot, dry rot or inadequate sub-floor ventilation.
Learn About Timber Decay and Dry Rot
Specialist Damp, Mould and Timber Treatments
We provide professional diagnosis and remedial treatments for homeowners, landlords, letting agents, managing agents and housing providers across Merseyside and West Lancashire.
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Remedial Damp Proof Courses
Installation of remedial damp-proof courses and wall membrane systems where rising damp has been correctly diagnosed. Qualifying installations are backed by our 10-year guarantee.
Remedial Damp-Proof Course Installation -
Mould Removal and Sterilisation
Professional mould removal and sterilisation, together with recommendations to address the underlying cause, which may include condensation, inadequate ventilation, cold surfaces, leaks or water ingress.
Professional Mould Removal -
Positive Input Ventilation
PIV systems introduce filtered air into the property to help reduce excess humidity, improve air circulation and control condensation.
PIV Ventilation Systems -
Cavity Wall Insulation Removal
Inspection and removal of failed or moisture-affected cavity wall insulation where it is contributing to penetrating damp, cold walls or internal moisture problems.
How Insulation Removal Works -
External Waterproofing and Rendering
External waterproofing, render repairs and breathable rendering systems designed to protect exposed elevations from penetrating damp and weather-related deterioration.
External Waterproofing and Rendering -
Brickwork Repointing
Defective mortar joints are carefully raked out and repointed to reduce rain penetration and protect the surrounding brickwork.
Professional Brickwork Repointing -
Damp, Timber and Mould Reports
Detailed inspection reports for homeowners, landlords, managing agents, property purchasers and other organisations requiring a written assessment of the property.
Damp and Timber Reports
Correct Diagnosis Before Treatment
Damp and mould can be caused by rising damp, penetrating damp, condensation, plumbing leaks, defective gutters, damaged render, high external ground levels, failed pointing or timber decay.
Treating the visible damage without identifying the moisture source can result in the problem returning and you paying for unnecessary work.
Our surveyors inspect the affected areas, consider internal and external conditions, take moisture readings where appropriate and recommend the most suitable remedial work.
More than 25 years' specialist experience. We have completed damp and mould work for homeowners, landlords, managing agents and housing associations throughout the North West.
Approved and accredited
Trusted Damp Specialists Across Merseyside
Our reputation has been built on accurate diagnosis, professional workmanship, clear communication and leaving properties clean, safe and tidy.
Damp Proofing Across Merseyside and West Lancashire
We provide damp proofing, mould removal, timber treatments and ventilation services across five regions: Sefton, Liverpool, Knowsley, West Lancashire and Wirral, plus a handful of towns in the wider North West.
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Sefton
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Liverpool
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Knowsley
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West Lancashire
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Wirral
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Wider North West
Arrange a Damp or Mould Assessment
Tell us what you have noticed and where the problem is located. We will contact you to discuss the issue and arrange a suitable inspection.