Damp or peeling walls?
External walls, parapets and rising damp at floor level.
Signs you'll see
- Paint bubbling or peeling, especially near the floor
- White salt deposits (efflorescence) on plaster
- Hairline cracks that let rain into the wall
- Damp tide-marks up to about one metre high
Why it happens
- Missing or bridged damp-proof course
- Wind-driven rain entering through cracked render
- Unsealed parapet tops and window sills
How we fix it
Repair cracks
Rake out and fill cracks with a flexible repair mortar or sealant.
Stop the damp
Damp-proof injection or a cementitious tanking coat on the affected band.
Elastomeric coating
A breathable elastomeric acrylic coating that bridges hairline cracks.
Walls & Rising Damp waterproofing questions
How do I know if my wall has rising damp?
Rising damp shows as a tide-mark of damp, bubbling paint and white salt deposits starting at floor level and rising up to about a metre. Damp patches higher up, or only after rain, usually point to rain getting in through cracks, sills or parapets instead.
Will repainting stop damp on my walls?
No. Ordinary paint traps moisture and peels again. The source of the water has to be stopped first, with a damp-proof injection or tanking for rising damp, or crack repair and an elastomeric coating for rain penetration.
What is an elastomeric wall coating?
It is a thick, flexible acrylic exterior coating that stretches over hairline cracks and keeps rain out while still letting the wall breathe. It is a common finish for exposed external walls and parapets.
Want walls & rising damp done for you?
Book a site survey. We inspect, find the source of the leak and give you a written quote.