BPI Membrane Corner Strip Tape – 150mm x 20m

Product Description

BPI Membrane Corner Strip Tape (150mm x 20m) is a high-performance, single-sided butyl sealing tape designed for professional cavity drain membrane installations, delivering reliable, watertight detailing at internal corners and junctions.

Constructed from a durable PVC film coated with high-tack butyl adhesive, this tape provides a strong, flexible seal across wall-to-floor and wall-to-wall transitions—critical points in Type C waterproofing systems. Its high initial grab and excellent peel strength ensure secure adhesion to membrane surfaces, concrete and masonry, helping to prevent water tracking at vulnerable junctions.

Engineered for long-term performance, the tape remains flexible across a wide temperature range and provides both a waterproof and vapour seal, ensuring consistent system integrity in below-ground and high moisture environments.

Special Features

• High-Tack Butyl Adhesive – Strong initial grab for secure, immediate bonding
• Watertight & Vapour Seal – Prevents moisture and vapour ingress at critical junctions
• Durable PVC Carrier – Reinforced film provides strength and resilience
• Wide Temperature Resistance – Performs from -40°C to +80°C
• High Peel Strength – ≥0.6 N/mm for reliable long-term adhesion
• Flexible & Conformable – Easily forms into corners without lifting or cracking
• Split Release Liner – Allows fast, accurate installation on site
• Trade Tip: Install at all internal junctions prior to membrane application or as part of the detailing stage. For full system integrity, combine with butyl tape/rope and sealing washers to maintain a continuous waterproof barrier.

Typical Applications

• Wall-to-floor junctions in basement waterproofing systems
• Internal corner detailing within cavity drain membrane systems
• Connecting floor membranes to drainage upstands
• Sealing membrane joints, repairs and detailing work
• Below-ground waterproofing (Type C systems)

Specification

• Width: 150mm
• Length: 20m
• Construction: PVC film with butyl adhesive
• Total Thickness: Approx. 0.9mm – 1.1mm
• Temperature Range: -40°C to +80°C
• Application: Corner sealing and junction detailing