BPI Membrane Sealing/Jointing Tape – 28mm x 1.5mm x 22.5m – Black

Product Description

This black butyl double-sided sealing tape (28mm x 1.5mm x 22.5m) is designed for professional cavity drain membrane installations, providing a continuous, watertight bond between membrane joints and overlaps.

Manufactured from high-performance butyl, the tape delivers excellent adhesion to typical construction substrates, including HDPE membranes, concrete and masonry. Its double-sided format ensures a secure, uniform seal across laps and joints, helping to prevent water tracking and maintain the integrity of Type C waterproofing systems.

Flexible and non-hardening, the tape remains permanently tacky, allowing it to accommodate minor movement within the structure without compromising the seal.

Special Features

• Double-Sided Butyl Adhesive – Provides a strong, uniform bond between membrane layers
• Watertight Sealing – Prevents moisture ingress at joints and overlaps
• 28mm Width – Ideal coverage for membrane laps and detailing
• 1.5mm Thickness – Ensures effective sealing even on slightly uneven surfaces
• Permanent Flexibility – Non-setting compound accommodates movement without cracking
• Trade-Grade Performance – Designed for professional waterproofing systems
• Trade Tip: For critical detailing, combine with butyl rope and sealing washers to ensure a fully continuous waterproof barrier across fixings, joints and penetrations.

Typical Applications

• Sealing cavity drain membrane overlaps and joints
• Bonding membrane sheets in wall and floor systems
• Detailing around corners and difficult junctions
• Supplementary sealing in basement waterproofing (Type C systems)

Specification

• Material: Butyl sealing compound
• Colour: Black
• Width: 28mm
• Thickness: 1.5mm
• Length: 22.5m
• Application: Jointing and sealing of membrane systems