A composite deck repair is no different then any other type of deck repair. If you have a deck that is made from composites, the best way to repair any damaged pieces is to replace them with matching composite pieces. This includes the deck boards and joists that make up the deck for your patio.
Replacing individual boards on a wood deck with capped wood composite decking depends on a few factors. First, you will want to make sure your substructure is sound and code-compliant. You will also want to verify your current joist spacing is applicable to the composite board that best fits your needs.
When to Replace Decking Boards. Despite the fact that pressure treated wood is supposed to be insect and water resistant, the truth is, over time, pressure treated wood will become increasingly prone to damage caused by these and other problems.
High-end composite decking is often encased in a plastic shell that resists fading, staining, scratching, and mold.
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To straighten a crooked board, attach one end of the board to the deck joists, and then pry the other end into place before securing it. Leave the deck boards longer than the deck, so they hang over the outer edge of the deck by several inches or more.
Removing the bad sections and making the splices work can be a bit of a puzzle, so get off on the right foot by marking the replacement boards before starting. If you want a close match between old and new deck boards, you’ll have to match the species of wood. This is tricky, because weathered deck boards look alike.