G-Tape – Joist & Bearer Protection

G-Tape is a premium self-adhesive flashing tape specifically designed to protect timber joists and bearers in decking applications. Made from advanced acrylic adhesive with a tough, UV-stable polyethylene surface, G-Tape extends the life of timber substructures by sealing out moisture and preventing rot.

Key Features:

• Self-adhesive acrylic tape – no primer or heat required
• Waterproof and UV-resistant for long-term outdoor durability
• Protects joists and bearers from moisture ingress, rot, and splitting
• Helps prevent corrosion of metal fasteners in treated timber
• Tear-resistant and stretchable – conforms easily to timber surfaces
• Leaves no mess or residue during installation or repositioning
• Can be applied in a wide range of temperatures

Typical Applications:

• Joist and bearer protection in timber and composite decking installations
• Barrier between timber and metal connectors or fixings
• Suitable for new builds or as a retrofit to extend deck life
• Can be used on beams, rim joists, and stringers for full frame coverage

Available Sizes:

• Supplied in various roll widths (commonly 50mm, 100mm) to suit different framing members

Installation Tip:
Apply directly to clean, dry timber surfaces before laying decking boards. Overlap edges slightly to ensure full coverage and press firmly to ensure proper adhesion. Trim excess with a utility knife for a neat finish.