High temperature makes the composite deck expand along its length and width. A composite decking is a strong and durable building material that is used to make decks. They are heat, the deck’s color, and the location you place the deck. Dark brown composite decks, for example, will absorb heat than light brown composite decks. EXPANSION: Everlast decking boards will expand and contract at a rate of around 0.3% to 0.5% of the boards length. When you are installing your deck, you should not allow your composite decking board to meet at both ends. How much of a gap? First, ensure that the deck boards are aligned properly. When this happens, the dark-colored composite decking will expand more than the light-colored composite decking. This is because there is no need for you to sand and oil composite decks to preserve them. All Rights Reserved. Composite decking is a great alternative to traditional wood decking, but does have some limitations. This is because dark-colored composite decks absorb heats more than light-colored composite decks. The width of the Wickes range of composite decking … Leave a gap calculated on the expansion rate of 0.3% - 0.5% of the board length to allow for expansion. Also, composite decks are more desirable than timber decks and will not wane when they are exposed to the ultraviolet rays of the sun. Also, resistant to mold, mildew, and rot. Then, install a fastener in the middle of each board length to prevent shifting during thermal expansion and contraction. Our fastener system is designed to act as hidden spacers to effortlessly create equal gaps … Must have header joint expansion Use starter clips Finishing slip Expansion gaps “We recommend that you use a qualified and compe-tent deck installer who is familiar with the workings of decking and outdoor pro-ducts that are exposed to the elements” 1 plank Full step by step installation video can be found at the end of this installation article. 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. What Are the Different Methods Of Installing Composite Decking? In order to prevent buckling of the deck during the wet season, you need adequate gaps between the boards. When leaving an expansion gap for each board, compare the current installation temperature (ambient) to what is … It is important to understand these reasons, as it directly influences the correct installation of the decking … It is incredibly strong and is naturally slip resistant and splinter free making it safer for children, visitors and pets. This means that any load bearing area will need to be framed and supported before the composite material can be … The expansion occurs due to 2 reasons. So, if you live in an environment that is hot, it is recommended that you choose composite decks that are light-colored. You must gap Trex® decking, both end-to-end and width-to-width. The wood and plastics are then processed in factories and cut into various sizes so that they can be used for building decks. The Problems With Composite Decking. What Are the Different Types of Composite Decking? Homeowners prefer composite decks because of the ease that comes with maintaining them. The installation process of composite decks is easy, the dark-colored composite decking will expand more than the light-colored composite decking. As Builddeck composite decking is made up of 60% natural material, some expansion can occur however on a significantly smaller scale. Click & Collect or delivery options are available. Note: To allow for expansion and maintenance, please be sure to keep a 30mm expansion gaps between all sides of your deck and … As long as the space left is big enough for adequate drainage and board expansion in the heat, and the gaps are exactly the same size to give a uniform finish, the gap size is an aesthetic decision. I’m using composite decking - will this be okay on a timber subframe? 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 © Copyright 2020 CompositeWarehouse – Composite Decking Supplier. Gapping is necessary for drainage and the slight thermal expansion and contraction of Trex decking boards. 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. during the winter my boards expand every year the gaps close and the boards buckle. Start by planning your deck to scale on paper and try and be as accurate as possible. 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. Fasten your deck boards as … 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 … 6. It is recommended that there should be a 5mm gap between the ends of your composite deck boards. Gapping also allows for the shrinkage of the wood joist system. When using WOOD/COMPOSITE SCREWS, nominal 1" thick boards require a minimum #8 - 2 1/2" or longer screw for fastening. INITIAL HINTS AND TIPS FOR INSTALLING HALLMARK COMPOSITE DECKING 7. This is so that when the composite decking expands, the decks will not warp. UltraShield decking products are designed to protect against mold, fading, moisture and mildew.See our simple composite decking installation video here. Expansion gaps explained Deck boards are laid with a gap between each individual one - both along their length and their ends. Composite decking expand when they are heated or exposed to direct sunlight. What Is Composite Decking Expansion Gaps? Which Decking Material Is the Best for My Garden. This can lead to a situation where the decks will be weakened. These are known as expansion gaps as they allow rainwater to easily run through the decking (rather than pool in an unwanted puddle) and for the deck to expand and contract due to changes in the … As temperatures fluctuate, composite deck boards will naturally experience thermal expansion and contraction. The accounts of issues are repeated with a frightening regularity and sameness throughout the threads of complaints. There should always be a slight gap. So, you should make sure to check with your composite decks’ maker for advice so that you will know the expansion level of your deck. » Note, Trex fascia has to be gapped width-to-width and end-to-end the same as … Notch your composite decking material around rail posts. The board, when ready, will form one of the strongest deck materials that you can use to build a deck in your house. Each decking species will have different movement properties, but let’s use Ipe as an example. So, when composite decks are exposed to high temperature, they expand at all sides. Make sure to leave at least an 1/8" gap for thermal expansion. 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. Remember to factor all necessary expansion gaps into your plans. 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. Composite decking will transform your outside living space and give it a real wow factor.It's hard wearing with no need to stain, seal or sand it. Therefore, we suggest you use the composite-cutting blade for cutting the deck boards. The polyethylene used in our decking boards is a high quality, … If stored outdoors the decking should be kept in a covered area to prevent exposure to direct sunlight and weathering. One of those guidelines is to leave enough space between the composite deck board to accommodate expansion. ENVISION Composite Deck Screws and EverGrain Composite Deck Screws are color matched deck screws designed for use with EverGrain and Envision. Why not order our sample pack! Nominal 2" thick boards require a minimum #8 - 3" … Blacking like this was a problem with 1st generation Trex decking that has been corrected with newer models. Because with a Trex deck you can’t sand or refinish … If joining 2 lengths of board together, make sure both ends are supported by separate Joists. This is to accommodate composite decking expansion gap. Remember that composite decks are made with wood and plastics. This is so that when the composite decking expands, the decks will not warp. It is essential to leave gaps between your composite decking boards to allow for both adequate drainage and any expansion in hot weather. Framing for Trex & Composite Decking. 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