Description

Ultratape® Decking Joist Tape – 50mm x 20m

The Ultratape® Decking Joist Tape is designed to protect timber joists and subframes from moisture ingress, helping to extend the lifespan of your decking structure. Applied to the top of joists before deck boards are installed, it creates a durable barrier that prevents water from sitting on the timber surface.

At 50mm wide, this tape is perfectly sized to wrap over standard 45mm decking joists, providing full coverage across the top surface and edges for maximum protection.

Manufactured for exterior use, Ultratape® is strong, weather-resistant and easy to apply, making it an essential addition to any decking project — whether for professional installers or DIY builds.

Product Features:

• Brand: Ultratape®
• Width: 50mm (suitable for 45mm joists)
• Length: 20 metres per roll
• Application: Decking joists and subframes
• Use: External
• Function: Protects against moisture and water ingress

Using joist tape helps to reduce the risk of rot and prolongs the life of your decking frame, particularly in areas where water can collect between deck boards.