
Guarantee on all damp treatments

Damp-proofing
experience

Damp survey and diagnosis
Basements are often dark, musty and uninviting spaces prone to various types of damp. If you want to make your underground area a habitual space for you and your family, you’ll need a basement tanking system to keep it safe and dry for years to come.
Applied as a liquid waterproof coating, our tanking system creates an impermeable barrier against groundwater, salts and other contaminants that damage your property. If you’ve spotted signs of damp in your basement – maybe due to an old or failing tanking system – book a site survey with our specialists today.
Damp is common in basements because the walls are below ground and often in contact with retaining earth and penetrating groundwater. Not only does this add pressure to the fabric of your property, but it also creates cold wall surfaces prone to condensation.
A high-performing tanking system is designed to block the passage of water before it enters your property. Formed by a blend of cements, aggregates and chemical modifiers, the tanking system creates a barrier that prevents water ingress from becoming a costly and recurring problem.


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.

Otherwise known as cellar tanking, a basement tanking treatment is the application of a high-performance liquid waterproof coating to the walls and floor of your basement. Provided it’s correctly installed by a professional, a tanking system forms an impervious barrier to prevent water penetrating your property.
Palmerston House Farren Court,
The Street, Cowfold, Horsham,
RH13 8BP
Palmerston House Farren Court,
The Street, Cowfold, Horsham,
RH13 8BP
© 2025 insituscp.co.uk. All rights reserved. | Designed by nu media group