
Guarantee on all damp treatments

Damp-proofing
experience

Damp survey and diagnosis
Damp-proof membranes are an effective way to prevent water entering your property. By forming a cavity within your wall or concrete floor, they create an air gap which allows the fabric of your home to breathe and stay dry.
At Insitu south coast preservation, we install high comprehensive strength membranes made from high density polyethylene (HDPE). As well as being impervious to moisture, each membrane comfortably sustains structural movement and has a lifespan of up to 30 years.
Damp-proof membranes are an effective way to prevent water entering your property. By forming a cavity within your wall or concrete floor, they create an air gap which allows the fabric of your home to breathe and stay dry.
At Insitu south coast preservation, we install high comprehensive strength membranes made from high density polyethylene (HDPE). As well as being impervious to moisture, each membrane comfortably sustains structural movement and has a lifespan of up to 30 years.


Penetrating damp occurs when water infiltrates your property through external defects or internal issues, resulting in damage to your walls, ceilings, and furnishings. To effectively combat penetrating damp, it’s crucial to identify the source of water ingress and implement appropriate repairs. Our qualified damp proofing surveyor can assess your property to determine the cause of the dampness and the extent of required repairs.
Once the source of the dampness is identified, our damp proofing specialists will remove the affected material and apply a physical waterproofing membrane to expedite the drying process. Furthermore, external issues must be addressed, which may involve coating the exterior wall with a chemical water repellent to ensure water remains outside your property, protecting your living space from further damage. Prompt and effective management of penetrating damp is instrumental in preserving your home’s structural integrity and comfort.

The main benefits of installing a damp-proof membrane include:
• Isolates damp walls
• Isolates salt-contaminated walls
• Protects deteriorating surfaces
•Can be installed quickly
•Long life expectancy (30+ years)
Palmerston House Farren Court,
The Street, Cowfold, Horsham,
RH13 8BP
Palmerston House Farren Court,
The Street, Cowfold, Horsham,
RH13 8BP
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