The Permanent Fix for Rising Damp: Chemical DPC Injection.

Rising Damp vs. Condensation: The Correct Diagnosis

The first mistake is treating all internal dampness as rising damp. Rising damp draws moisture up from the ground via capillary action, typically affecting only the lowest meter of the wall. Condensation is an airborne moisture problem, usually appearing in high-humidity areas like bathrooms. We use moisture profiling equipment to definitively diagnose the source before recommending treatment.

The Chemical DPC Injection Process

Since many older properties have failed or absent damp-proof courses, the modern solution is a Chemical DPC. This involves drilling a series of holes into the lowest mortar course, injecting a water-repellent (silane or siloxane-based) cream under pressure, and allowing it to cure.

• Injection: Forming a new, permanent, horizontal barrier within the wall fabric.
• Plaster Remediation: All contaminated plaster must be removed and replaced with salt-retardant render to prevent salt migration.
• Finishing: Applying a final coat of breathable, decorative paint.