![]() How much space should be between house and deck?ĭeck footing for 2×6 and 2×8 joist should be 16″ (400mm) from the house. A deck is a wooden platform typically installed in the yard of a home. Silicone caulk is an airtight sealant that is water-resistant and very subtle when applied. ![]() This rule does NOT apply to composite or PVC boards which can have a large thermal expansion enough to create a serious roller coaster effect down the length of the PVC or composite boards if you DON’T leave room for thermal expansion.ĭoes Trex need a gap? Can I seal between deck boards?Ī quick and simple solution to sealing these spaces is to caulk between the deck boards. Keep the butt ends as tight as possible when installing wood decking. Gapping is necessary for drainage and the slight thermal expansion and contraction of Trex decking boards. You must gap Trex® decking, both end-to-end and width-to-width. The Trex Hideaway Hidden Fasteners automatically measure the 6mm gap between grooved edge boards but you must still ensure the 6mm gap with the square edge boards. What is the space between Trex deck boards?Īll deck boards must always be installed with a 6mm side-to-side gap. Step 4: Make Sure Your Joists Are Spaced Correctly Deck joist spacing should never exceed 16″ on center (with the exception of MAX deck boards, which allow for maximum 24″ on center). ![]() What is the maximum allowable gap between deck boards? One of the most critical steps for properly securing composite decking in place is to make sure you have a 1/4-inch to 3/16-inch gap between the decking boards (don’t exceed 1/2 inch). 5 What is the recommended space between deck boards?ĭo you leave a space between composite deck boards?.1 Do you leave a space between composite deck boards?. ![]()
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