Can you install Trex with no gaps?
You must gap Trex® decking, both end-to-end and width-to-width. Gapping is necessary for drainage and the slight thermal expansion and contraction of Trex decking boards.
Should there be gaps in Trex decking?
Important points about gapping All deck boards must always be installed with a 6mm side-to-side gap. 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.
Can composite decking boards be butted together?
Butt Joints on Composite Decking Collect Dirt As they collect moisture and rot the top of the joist. Just imagine those little pockets of dirt sprout with weeds growing out of your decking. You will never butt composite again.
Do you need an expansion gap for composite decking?
Make sure the composite deck boards do not over hang the joist at the edge by more than 20mm and a 20mm expansion gap should be left between the wall or other fixed objects surrounding the composite deck.
What can I do if the boards on my deck are too close together?
To widen the gap between the deck boards run the saw forward lightly touching one side, then check for clearance. If the space is still too narrow, make a second pass on the other side. You may have to make several passes using the same process to widen the space between the deck boards for desired spacing.
Does composite decking need room to expand?
Yes, composite decking materials expand and contract in all directions, but not as much as real wood. Composites are resistant to moisture. Instead, they change in size due to temperature. It will expand when under a hot temperature while contracting in the cold.
What is the proper spacing for Trex decking?
Most composite and PVC decking brands, like Trex and Azek, recommend a maximum joist spacing of 16 inches OC.
How do you fill gaps in composite decking?
Fill small holes, using a putty knife, with a mixture of fine composite board shavings and silicone caulk. The consistency of the mixture should be thick enough that it will not seep out of the bottom of the hole. Match the color of the caulk to the deck boards.
Does composite decking puddle?
In short, no. Standing water on composite deck boards will not affect your TimberTech® capped polymer or capped composite deck boards the way it would traditional wood.
Should you butt deck boards together?
There is no reason to put a gap between the ends (also known as butt ends or butt joints) of wood deck boards. Wood, both softwood and hardwood, is dimensionally stable in length regardless of temperature, humidity or moisture content. Keep the butt ends as tight as possible when installing wood decking.
How much does composite decking shrink and expand?
Composite decking is known to shrink and expand along its length, not its width. Or at least very minimally across the width. Experienced carpenters will know that this is the opposite of what natural wood does. Wood expands very little along its length – as little as 2% whereas it can expand 6-8% across its width.
What is the spacing for composite decking?
Most composite decking materials, like Trex, AZEK, TimberTech and Fiberon composite decking, require minimum joist spacing for composite decking at 16″ on-center spacing for straight decking and 12″ on-center joist spacing for 45-degree angle diagonal decking.
Can you go 16 on center with Trex decking?
Does Trex need to be on 12 centers?
Why is my composite decking cracking?
It can crack if the deck suffers stress due to a settling foundation or a poor design. It may also crack due to simple wear and tear or faulty pieces. Manufacturers have developed a product specifically designed to patch cracks in composite decking.
Does composite decking sag?
Your composite deck may not warp, but it can sag and buckle. Most sagging is caused by improper spacing between the joists when it is installed. Also, thermal expansion, the fluctuation of temperatures, can have a more significant effect on composite decking than on natural wood decking.
What happens if you don’t leave gaps in decking?
Rain can prove especially detrimental to wood decking if it doesn’t have a place to drain off the deck. When there are no gaps between the boards, this moisture remains trapped which can lead to issues like rot and mold.