What is Damp Proofing?
Damp proofing is the prevention and control of moisture ingress that harms the structure, finishes and air quality of a building. Left untreated, damp can lead to blistering plaster, rot in timber, mould growth and poor thermal performance. Our job is to accurately diagnose the source of moisture and implement a targeted remedy that keeps your property dry for the long term.
- Independent diagnosis – no one‑size‑fits‑all treatments
- Clear report with moisture readings and photos
- Specification matched to your wall type and property age
Why Choose SM Preservations?
Accreditations & Insurance
Proud member of Checkatrade. Fully insured and compliant with UK building preservation standards.
Types of Damp & How to Identify Them
Rising Damp
Moisture that rises through porous brickwork or mortar from the ground due to a failed or missing damp proof course (DPC).
Common signs:
- Tide marks up to ~1 m above floor level
- White, powdery salt deposits
- Peeling wallpaper or bubbling plaster
Penetrating Damp
Caused by external defects—cracked render, defective pointing, leaking gutters, or porous masonry—that allow rainwater to soak into walls.
Common signs:
- Damp patches on walls after rainfall
- Dark staining and flaking paint
- Localised damp, often in upper walls or ceilings
Condensation Damp
Occurs when warm, moist air meets cold surfaces inside your home—often from poor ventilation.
Common signs:
- Black mould growth
- Foggy windows and musty smell
- Peeling paint or wallpaper in corners
Our Damp Proofing Process
Survey & Diagnosis
Full internal and external inspection, moisture mapping, and salt analysis
Report & Quotation
A clear written report with photos, readings, and a fixed-price quote.
Preparation Works
Protecting floors, removing damaged plaster, isolating work areas.
Treatment & Repair
Applying the correct system for your specific damp issue.
Replastering & Finishing
Using breathable, salt-resistant plasters.
Drying & Monitoring
Allowing natural drying time and checking moisture levels.
Sign-off & 10-Year Guarantee
Full documentation and aftercare support.
Contact Form
Get a Free Damp Survey
Don’t let damp damage your home. Book a no-obligation survey today to identify the cause and get a fixed-price solution.
FAQ's
No. Rising damp occurs when moisture travels up through masonry by capillary action. It requires correct diagnosis and targeted treatment such as a chemical DPC and salt-resistant replaster.
Small jobs can be completed in a day or two. Larger or basement projects can take one to two weeks depending on drying times.
Yes. We isolate work areas, protect floors, and clean daily to minimise disruption.
No. We use breathable, high-quality materials compatible with both modern and period buildings.
Yes – all our work carries a 10-year written guarantee, giving you complete peace of mind.
Absolutely. We use sympathetic methods and breathable materials designed for heritage structures.