Damp Proofing

Damp Proofing Membranes (Above Ground)

Damp can cause long-term damage to internal wall finishes if left untreated. Damp proofing membranes provide an effective way to isolate moisture and salt contamination, allowing walls to be finished cleanly and reliably.

Modern damp proof membranes are manufactured from durable high-density polyethylene (HDPE) and are designed to create a controlled cavity between the wall and the internal finish. This helps manage residual moisture while providing a stable surface for plaster, render or plasterboard.

Above-ground damp proof membranes are commonly used after a new damp proof course (DPC) has been installed, allowing walls to dry out naturally while internal finishes can be applied without delay.

Waterproof & Dry stock a range of damp proofing membranes suitable for walls and floors, including:

• Slimline mesh-backed wall membranes
• Heavy-duty floor membranes

If you’re working below ground, explore our range of basement waterproofing membranes, or browse our full selection of floor membranes.

Damp Proof Membranes for Walls

Where a property has been affected by damp due to a failed or missing damp proof course, installing a new DPC is the first step. Once in place, a damp proof membrane can be fixed to the wall to provide a dry, stable base for internal finishes.

Wall membranes feature a studded profile that creates a small cavity, allowing residual moisture to dissipate safely. Many systems also include a bonded mesh surface, which provides an excellent key for plaster, render or dry lining.

This approach allows walls to be finished almost immediately, rather than waiting months for the masonry to fully dry out.

Mesh-Backed Wall Membranes

Mesh-backed damp proof membranes are designed for above-ground internal walls, providing a reliable key for finishes following DPC installation.

• Compatible with plaster, render and plasterboard systems
• Joints can be sealed using reinforced sealing tapes where required

Slimline Wall Membranes

For areas with limited space — such as window reveals or tight internal details — slimline membranes offer the same protection in a reduced profile.

• Ideal where maintaining internal dimensions is important
• Fix securely using specialist membrane fixings to maintain a sealed system

Damp Proof Membrane Installation Overview

1. Cut the membrane sheets to size.
2. Position on the wall, drill through and mechanically fix using suitable membrane plugs.
3. Seal joints and overlaps as required using compatible tapes.
4. Apply the chosen internal wall finish.

Why Buy from Waterproof & Dry?

Waterproof & Dry are independent specialists in damp-proofing and waterproofing systems, supplying proven membrane solutions for domestic and commercial projects across the UK.

We offer fast UK delivery (typically 1–3 working days) and free technical advice from our in-house team to help you choose the right system for your project.

Need advice? Call our technical team on 0117 332 4747 — we’re happy to help.