In addition, they recommend leaving a 15 mm space between the composite plank and the wall.ĭiscover the Benefits of Our Product Click to Claim How to fix warped composite decking? To prevent warping, composite decking manufacturers usually recommend installing composite decking with 8 mm of space between the deck boards. The gaps between the decking will prevent it from warping when it expands in close proximity to each other, thus preventing the composite decking board from warping. When installing composite decking, make sure there is space between the decks to allow them to expand freely. Warping of composite decking only occurs when there is no spacing between decks. It is the change in temperature that causes composite decking to expand. Then composite decking will not warp like wood planks. If you follow the exact installation instructions during the installation process. The way you install your composite decking will determine whether it will warp or not. How to prevent the warping of composite boards? All are the causes of the warping of composite decking boards. Therefore, composite decking touches the wall or is too close to each other. For example, if the composite deck touches a wall, it becomes when it expands with heat and this happens. When the wood plastic decking absorbs heat and expands it comes in contact with a fixed object. Therefore, when installing composite decking, you will need to leave enough space on the floor. Most composite warping is due to thermal expansion.

Unlike wood decking, composite decking does not warp due to excess moisture. So, what conditions can cause composite decking to warp? Why does composite decking warp? If your composite decking warps, then it is most likely the result of incorrect installation. Therefore, when composite decking expands, it will not warp or deform like wood decking. Composite decking also undergoes thermal expansion when the deck becomes warmer.Īlthough composite decking expands when it gets hot, it does not shrink as wood decking does. Like other types of outdoor decking, composite decking absorbs heat when exposed to the sun. Composite decking differs from natural wood decking in that it is known for its high level of durability. Composite decking is a synthetic material that is made up of a mixture of wood fibers and recyclable plastics.

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