What Is Damp Proof Plastering?

Damp proof plastering is a specific process for applying render to internal walls after damp treatment. It forms part of a comprehensive system to prevent moisture and salts from transferring back through the walls after a damp proof course has been installed.

Prokil’s system is different from standard plaster. While regular plaster absorbs moisture and breaks down, Prokil uses a BBA-approved plaster mix. This mix is breathable, salt-resistant, and works well with a variety of decorative finishes. It restores internal walls to a dry, stable condition and protects against further damage.

How Our Damp Proof Plastering Works

Damp proof plastering is a specialised treatment performed in stages by skilled professionals. It helps safeguard walls from continuous damp and salt damage. At Prokil, every job begins with a professional damp survey carried out by a qualified CSRT or CSTDB surveyor.

Our Process

1. Survey & Diagnosis

We use moisture meters and inspection techniques to determine the extent of salt and damp contamination within the walls. This ensures no guesswork and only targeted treatment where it’s needed.

2. Preparation & Removal

Contaminated plaster is removed to a safe height. If needed, a chemical damp proof course is injected to create a lasting barrier against rising moisture.

3. Application & Protection

A salt-resistant, breathable plaster system is applied. This material, approved by the BBA, bonds securely and allows trapped moisture to evaporate over time.

This method tackles both the cause and effect of damp. It protects the wall’s integrity and readies it for decoration, so there’s no risk of damp returning underneath.

What Makes Prokil’s Plastering Different?

Prokil’s damp proof plastering offers long-lasting protection. This is better than standard services, which only provide a quick skim. Our system is applied by trained technicians and designed for performance, not cosmetic cover-ups.

Here’s what sets it apart:

• Resists salt transfer and prevents staining, decay and decorative spoiling.
• It allows walls to breathe and avoids moisture being trapped behind the finish.
• It supports full decorative recovery and is compatible with wallpaper, paint and other finishes.
• Applied by qualified specialists and not generalists or subcontractors.
• Compliant with British Standards, like the British Board of Agrément (BBA).

Our service includes a detailed damp survey to determine precisely how much plaster needs to be replaced. This depends on how deeply salts or moisture have penetrated. In some cases, only isolated areas require treatment. Sometimes, if gypsum plaster has failed or the old damp-proof course has not worked well, you may need to replaster entirely.

We use moisture readers and conduct visual inspections to outline the scope of work accurately. Where needed, we’ll advise on a drying period before new plaster is applied, helping to ensure maximum longevity and compliance.

Everything we do is backed by the Prokil Guarantee, which offers protection for up to 20 years, so you can be confident that your property is protected for the long term.