Composite decking manufacturer Trex has developed a new tape that protects pressure-treated substructure for 25 years or longer.
Because wood posts and beams that support the deck are likely to deteriorate long before the decking warranty elapses, the company says its Trex Protect self-adhesive butyl joist and beam tape protects wooden joists and beams from moisture that can lead to rot and the loosening of deck screws and fasteners.
“If a homeowner is going to invest in a premium, wood-alternative deck warrantied to last several decades, it’s only logical that they would want the substructure to last just as long,” says Dave Kile, North American sales manager for Trex Protect. “Unfortunately, that’s not always the case when working with wood, which naturally weakens over time—especially when subjected to continuous exposure to the outdoor elements.”
Trex Protect, the company claims, shields the tops of joists, rim joists, ledger boards, and beams from moisture that can lead to the development of rot and wood decay. Acting as a barrier between wood and galvanized metal joist hangers, the product seals deck fasteners and helps deck screws hold longer and stronger by preventing moisture penetration. It also defends against splitting that can result from seasonal freezing and thawing, the company adds.
Protect is available in two widths–1 5/8 inches for joists and 3 1/8 inches for beams. It works on horizontal and vertical surfaces and is applied as a “cap,” allowing the wood to breathe. The tape will not bleed, dry out as quickly, or curl up and hold water, the company says.
“When it comes to return on investment, it’s hard to beat Trex Protect,” noted Kile. “To protect an average-sized deck in the U.S. requires approximately five rolls of Trex Protect joist tape and one roll of Trex Protect beam tape. So, for less than $100, a deck builder can safeguard their hard work and ensure that the substructure performs as long as the decking it supports.
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