Damp Proofing Specialists

Damp proofing is the process of stopping unwanted moisture entering the walls, floors and structure of a building, and repairing the damage it has caused. It covers several treatments, including installing a new damp proof course for rising damp, fixing external defects behind penetrating damp, and controlling condensation. The correct treatment depends on the type and cause of the damp, established by a survey.

A damp proof course is a continuous waterproof barrier within the walls that stops ground moisture rising up through the structure. When an older property has a failed DPC, or none at all, rising damp results. We install a new chemical DPC by injecting a water-repellent cream or fluid into the mortar course to form a fresh barrier.

It starts with diagnosis. A surveyor identifies the type and cause of the damp, then we apply the matching treatment, a new DPC for rising damp, external repairs for penetrating damp, or ventilation for condensation. Treating the correct cause is what makes the fix last, which is why we never prescribe works without a survey first.

Costs vary with the size of the property and the extent of the problem. As a guide, chemical DPC injection typically costs between 70 and 120 pounds per metre, treating rising damp in a single room with replastering is often between 1,000 and 2,500 pounds, and a whole-house damp proof course usually falls between 3,000 and 6,000 pounds. We always provide a fixed price after a survey.

A whole-house damp proof course in the UK typically costs between 3,000 and 6,000 pounds or more, depending on the size of the property, how many walls are affected and the amount of replastering required. The only way to get an accurate figure is a survey, after which we provide a fixed price.

A correctly installed damp proof course is a permanent remedy and does not need redoing under normal conditions. For your confidence, our damp proofing treatments are backed by a written long-term guarantee.

Most rising damp treatments are completed within a few days, depending on the number of walls and the amount of replastering. Replastered areas then need time to dry out fully before redecoration. Your surveyor will give you a clear timescale with your treatment plan.

Yes. Our damp proofing treatments carry a written long-term guarantee. An insurance-backed guarantee is also available as an option on request. It is not included as standard, and where you have taken it, it can transfer to a new owner if you sell the property.

In most cases no. Standard buildings insurance usually treats rising damp and condensation as maintenance issues rather than insured events, so they are not normally covered. Damage from a sudden, accidental escape of water may be a different matter. It is always worth checking the specific terms of your own policy.

Yes, and it matters more than anything else. Damp symptoms can have several different causes, and treating the wrong one is the main reason damp returns. A survey confirms the true cause so the correct treatment is applied first time.