Damp Proof Membrane – 125mu – Residential & Commercial Use

Product Overview

This High-Performance Polythene Damp Proof Membrane is designed to resist moisture transfer from the ground into floor constructions. It provides a reliable barrier layer suitable for domestic and light-commercial slab applications. With a flexible, tear-resistant structure, it supports straightforward cutting, laying, and jointing across prepared sub-base surfaces. Compatible with insulation, concrete slabs, screeds, and damp-proof detailing at wall junctions, this membrane is supplied in a 250mu thickness on a 4m × 25m roll, providing 100m² of coverage.

Features & Benefits

• Moisture resistance: Forms an effective barrier against moisture rising from the ground.
• Consistent material quality: Manufactured to uniform thickness supporting predictable performance.
• Flexible installation: Suitable for laying over sand blinding or insulation prior to concrete placement.
• Durable sheeting: Resists tearing during handling and positioning on site.
• Compatibility: Can be used within standard floor build-ups including insulation and screed layers.

Applications

• Ground floor slabs: Suitable for use beneath concrete floors in housing and light-commercial buildings.
• Screeded floors: Appropriate as a separating layer below sand/cement screeds.
• Insulation layers: Suitable for placement beneath rigid floor insulation where required.
• Construction refurbishment: Provides damp-proofing in upgrade or replacement floor systems.

Installation Guidance

• Sub-base preparation: Lay over a smooth, compacted surface or sand blinding to prevent punctures.
• Jointing method: Overlap sheets by recommended laps and seal using approved DPM tape.
• Edge detailing: Continue membrane up perimeter walls to meet the damp-proof course where required.
• Protection: Avoid damage from sharp objects or foot traffic during installation.
• Important note: Installation must comply with BS 8102 and relevant building regulations for moisture protection.

Compliance & Performance

• Material classification: Manufactured from polyethylene suitable for use as a damp-proof membrane.
• Moisture control: Designed to resist moisture penetration from the ground into building structures.
• Durability: Suitable for long-term service life when installed.

FAQs

• What is the thickness of the membrane? The membrane is 250mu thick, equivalent to 1000G.
• Can the membrane be used in commercial buildings? Yes, it is suitable for light-commercial applications.
• How should the membrane be installed? It should be laid over a smooth, compacted surface or sand blinding and jointed with approved DPM tape.