Polythene DPM 4 m × 25 m 300 µm Black (BD3004025BK)

This black polythene damp‑proof membrane is engineered for use in ground‑floor slabs and similar applications to effectively block moisture ingress from the ground. Measuring 4 m wide by 25 m long (covering 100 m² per roll) with a nominal thickness of 300 µm (approximately 1200 g/m²), it offers a durable barrier layer beneath concrete or screed.

The membrane is manufactured from high‑quality recycled polythene and is BBA‑certified, ensuring compliance with UK building regulations and suitability for use as a “Type A” membrane under British Board of Agrément certification. Its wide width aids rapid installation with fewer joints, and its robust gauge helps resist puncture and damage during construction.

Specifications

Roll size: 4 m × 25 m (100 m²)
Thickness: 300 µm (~1200 g/m²)
Colour: Black
Certification: BBA‑certified, complies with BS EN 13967:2012 type requirements

Key Features

• Large 4 m width reduces number of laps and simplifies installation
• 300 µm thick film provides enhanced durability and puncture resistance
• BBA certification offers assurance of long‑term performance and compliance
• Manufactured from recycled polythene for environmentally conscious projects
• Suitable for installation under concrete slabs, between slab and screed, or in other ground‑floor applications