Building a composite deck will typically cost homeowners thousands of pounds. It is an investment that can add significant value to a home, but, like any asset, it needs to be protected. To prevent timber decking subframes from decaying, Trex Protect joist tape shields the substructure from moisture.
A deck’s subframe is regarded by many experts as the most important part of installing a deck because it determines the overall structural integrity. If moisture penetrates a timber substructure, it can lead to splitting, rotting and decay in as little as eight years. However, a butyl-based joist, beam and rim tape, such as Trex Protect, is designed to prevent this – from just £30.
Why is waterproof joist tape essential?
When a subframe’s joists and beams are left exposed, water can seep into screw holes and sit on the wood, causing it to rot and the screws to rust. The natural expansion and contraction of wood due to seasonal freezing and thawing can also cause the beams to split and weaken over time.
How does Trex Protect work?
Applying Trex Protect joist tape to the top of joists, rim joists, ledger boards and beams prevents water from penetrating the substructure by forming an adhesive that flows around the screw holes to create a waterproof, protective seal. It also effectively seals deck fasteners and helps screws hold longer and stronger, defending against the wood splitting.
Should you use asphalt or butyl tape?
Joist tape typically comes in two types: asphalt and butyl. However, butyl tape has many advantages over asphalt-based tape, starting with the fact that butyl tape is a sealant as opposed to a patch. It’s ‘rubberier’ than asphalt-based tape, with a protective seal that keeps water away from the wood, and also has a longer life than asphalt tape, which starts to break down with repeated exposure to sunlight.
How long does it last?
Trex Protect comes with a 25-year warranty, which safeguards homeowners’ investment over the long term, particularly if high-quality boards like Trex are used to build the deck itself.
Available in three widths – 1-5/8”, 3-1/8” and 11” – Trex Protect works on horizontal and vertical surfaces from just £30 per roll.
For more information on Trex Protect, visit trexprotect.com/uk/
