Polythene Damp Proof Course DPC – 450mm x 30m

Polythene Damp Proof Course DPC – 450mm x 30m by Principal Building Products is a professional-grade moisture barrier engineered to prevent rising damp in masonry walls. Manufactured from 100% recycled polythene and supplied in a generous 30-metre roll, it delivers 13.5 m² of coverage per roll — making it a practical, cost-effective choice for bricklayers, groundworkers, and self-builders alike. Compliant with UK and EU standards, this polythene DPC roll is suitable for both domestic and commercial construction.

Key Features and Specifications

• Material: 100% recycled polythene (polyethylene)
• Dimensions: 450 mm wide × 30 m long (13.5 m² per roll)
• Thickness: 500 mu (0.5 mm) — meets the minimum single-layer thickness of 0.46 mm specified under BS 6515
• Surface finish: Embossed both sides for enhanced mortar adhesion and reduced side slippage
• Colour: Black
• Standards: Conforms to BS 6515:1984; CE marked to EN 14909:2012
• Cold-weather performance: Remains flexible and workable at low temperatures
• Installation: Suitable for horizontal and vertical wet-bedded applications
• Sustainability: Made from recycled polythene — an environmentally responsible choice
• Brand: Principal Building Products Ltd

Applications

• Horizontal DPC in mortar beds, installed approximately 150 mm above ground level to comply with current Building Regulations
• Vertical DPC around window and door reveals, junctions, and openings
• Cavity wall construction in brick, block, and stone masonry
• New-build residential and commercial properties
• Extensions, renovations, and refurbishment projects
• Low-rise domestic constructions up to two storeys
• Substructure and ground-floor wall details where a rising-damp barrier is required

Why Choose This Product

The Principal Building Products Polythene DPC 450mm x 30m combines full compliance with BS 6515 and EN 14909 with a robust, embossed finish that keys firmly into mortar — reducing the risk of slippage during installation. The 450 mm width suits a wide range of wall thicknesses and cavity configurations, while the 30 m roll length minimises joints and speeds up laying. Made from recycled polythene, it offers a durable, long-lasting damp-proof solution at a competitive trade price, with no compromise on regulatory compliance.

Delivery in and Around London

We deliver the Polythene Damp Proof Course DPC – 450mm x 30m to all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and bulk orders are welcome — contact us for volume pricing and pallet delivery options.