Our fastener system is designed to act as hidden spacers to effortlessly create equal gaps … Then, install a fastener in the middle of each board length to prevent shifting during thermal expansion and contraction. The fixing of composite … Push the next board in place. For areas that are subject to significant temperature swings, we recommend installing your deck boards using surface fasteners. It is recommended that there should be a 5mm gap between the ends of your composite deck boards. Expansion gaps … Also, composite decking expansion depends on the materials that the decks are made of. High temperature makes the composite deck expand along its length and width. Additionally, by leaving the correct expansion gaps as detailed within our full installation guide, any fluctuation can be pre-empted, avoiding possible future warping. Here are some best practices to keep in mind to allow for expansion and contraction when installing capped composite decking: Always leave 1/8” to 1/4” gap between deck boards during installation. Homeowners prefer composite decks because of the ease that comes with maintaining them. Full details are available upon request. That’s why the board ends should never be installed tight against one another. ENVISION Composite Deck Screws and EverGrain Composite Deck Screws are color matched deck screws designed for use with EverGrain and Envision. What Are the Different Types of Composite Decking? Providing expansion gaps allows proper drainage and ventilation to the sub base which prevents the timber from rotting Composite decking should require minimal maintenance over its life, usually a clean-up with a garden hose is sufficient So, when composite decks are exposed to high temperature, they expand at all sides. It will add beauty to your outdoor space and provides plenty of privacy. The polyethylene used in our decking boards is a high quality, … EXPANSION GAPS: Like a wood composite decking, ECO BAMBOO COMPOSITE DECKING also expands, although this is less than with polypropylene or polyethylene based decking products. One thing about thermal expansion is that it can shift the composite decks from where they are fixed if enough space is not allowed between the decks. The expansion occurs due to 2 reasons. short of dismantling the deck and staring again, 2 years ago I used a skill saw to open the gaps when they were most swollen this helped … One of those guidelines is to leave enough space between the composite deck board to accommodate expansion. There should always be a slight gap. There should always be a slight gap. Composite materials that use sawdust or wood fibers in the core are subject to expansion and contraction due to changes in moisture content, which is typically seasonal. In cooler climates, some composite boards expand at approximately 0.75 mm/m of a composite deck board. The board, when ready, will form one of the strongest deck materials that you can use to build a deck in your house. Composite decking expand when they are heated or exposed to direct sunlight. Expansion gaps when boards are to be butted together should be calculated based on this sum, eg. Composite decking has 60% timber content to prevent damage. UK Composite decking boards are made from a mixture of hardwood fibres (approximately 55%) and high density polyethylene with the addition of certain additives to improve physical, weathering and processing properties. The Problems With Composite Decking. When leaving an expansion gap for each board, compare the current installation temperature (ambient) to what is … How much gap should I leave for expansion or contraction when installing. There are a multitude of problems with composite decking that show up all too often to be just a stray issue for a hard to please homeowner. When installing composite decks, there are procedures that you must follow to make the process simple and to stick to best practice. I’m using composite decking - will this be okay on a timber subframe? The size of the gaps must be even and consistent to give a pristine finish, but the choice of gap size is yours. Below … for 2.4m length boards 7mm gap should be left when butting. That’s why the board ends should never be installed tight against one another. As Builddeck composite decking is made up of 60% natural material, some expansion can occur however on a significantly smaller scale. This can lead to a situation where the decks will be weakened. So, it is advised that you leave a space of 5mm between the edges of the decks. The outer gaps must be a minimum of 8mm from anything prohibiting from expanding. The accounts of issues are repeated with a frightening regularity and sameness throughout the threads of complaints. Take the next piece of composite deck and securely push into the clips. Also, composite decks are more desirable than timber decks and will not wane when they are exposed to the ultraviolet rays of the sun. during the winter my boards expand every year the gaps close and the boards buckle. The Expansion and Contraction gaps on a back to back butt joins generally on the inner gaps must be 5mm or the thickness of a Best Deck Clip on its side. How much of a gap? DOUBLE JOISTING Also, resistant to mold, mildew, and rot. The next section explains why composite decking expand. Everlast decking should be stored flat. Start by planning your deck to scale on paper and try and be as accurate as possible. Decking expansion gaps. The gaps between boards are designed for expansion, as composite decking boards are manufactured from a mix of wood and recycled plastics the expansion properties are critical to stop buckling and the deck … Remember to factor all necessary expansion gaps into your plans. Because with a Trex deck you can’t sand or refinish … If stored outdoors the decking should be kept in a covered area to prevent exposure to direct sunlight and weathering. Blacking like this was a problem with 1st generation Trex decking that has been corrected with newer models. So, when you are laying your composite decks on the joists, you must make sure that you leave at least 5mm space between the composite decks. The Wood Plastic Composite (WPC) Fencing is crafted to be durable, reliable, and weather resistant. Full step by step installation video can be found at the end of this installation article. That will depend upon air temperature at the time of installation (Read this to learn more). It is important to understand these reasons, as it directly influences the correct installation of the decking … Gapping also allows for the shrinkage of the wood joist system. DuraLife composite decking products are uniquely manufactured with a super-strong, co-extruded polypropylene outer shell that forms a “force field” around three sides of the board. Composite decking boards do not always return to their original positions after expansion and contraction, and therefore sometimes you may see different expansion and contraction gaps occurring within your decking. What Is Composite Decking Expansion Gaps? The essence of leaving this space is for the decking to expand and contract when they heat up. You have to leave a space between the composite decks. Senate WPC decking boards will expand and contract at a rate of around 0.3% to 0.5% of the boards length. Remember that composite decks are made with wood and plastics. It is important to leave gaps between boards when installing your composite decking, but the size of the gap you choose can vary. Composite decks that are exposed to direct sunlight absorb heat more than decks that are positioned under shade. Fasten your deck boards as … Providing expansion gaps allows proper drainage and ventilation to the sub base which prevents the timber from rotting. Make sure to leave at least an 1/8" gap for thermal expansion. How much of a gap? You must gap Trex® decking, both end-to-end and width-to-width. This is to accommodate composite decking expansion gap. If you reside in hot regions that have frequent temperature change, you need to leave a larger gap than you would if you live in a region where the temperature doesn’t expand. Composite decking cannot be used as structural material. Framing for Trex & Composite Decking. Not sure of the type of composite decking or the colour you want? The installation process of composite decks is easy, the dark-colored composite decking will expand more than the light-colored composite decking. Click & Collect or delivery options are available. Why not order our sample pack! It is recommended that there should be a 5mm gap between the ends of your composite deck boards. Composite decking expansion and contraction, deck board installation technique, butt joints, butt joins, staggered joins, breaker boards ... Trex Composite Decking, ... if you allow gaps between the boards from side-to-side and at the end joints this will allow for thermal expansion and contraction. Then processed in factories and cut into various sizes so that when the composite decks light brown composite is. Subject to significant temperature swings, we recommend installing your deck that the decks we recommend installing your expands. 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