Even a durable WPC decking board can get damaged – by dropping a heavy object, an impact when moving furniture, or improper installation. A crack, scratch or chipped edge can then appear on the surface.
The good news is that you can fix these problems yourself in a few simple steps. In this guide, we will show you how.
Tools and materials required for repair:
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Sandpaper (120 and 220 grit)
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WPC filler or epoxy resin mixture
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Putty knife
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Cleaning agents (e.g. soapy water)
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Cloth
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Varnish or protective coating (optional, to restore appearance)
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Heat gun (for larger repairs)
Step 1: Cleaning the damaged area
Before starting the repair, thoroughly clean the area:
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Use soapy water or a mild cleaning agent to remove dirt and grease.
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Wipe the area dry with a cloth and allow it to dry completely.
Step 2: Sanding the damaged surface
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Use 120-grit sandpaper to gently remove sharp edges around the crack or scratch.
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After sanding, go over the area with 220-grit sandpaper so the surface remains smooth.
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Once sanding is complete, wipe the surface with a dry cloth to remove dust.
Step 3: Applying filler or epoxy resin
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Prepare the WPC filler or epoxy resin according to the package instructions.
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Apply the filler or resin to the crack or damaged area using a putty knife.
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Make sure you fill the entire crack and remove any excess material.
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Allow the filler or resin to dry for the recommended time.
Step 4: Surface finishing
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Once dry, gently sand the surface again with sandpaper (220-grit) so that it blends in with the surrounding area.
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If you wish, you can apply a protective coating or varnish to restore the original appearance of the WPC decking board.
Step 5: Repairing larger damage (optional)
For larger cracks or damage, you can use a heat gun to warm the WPC material and reshape it. We recommend this step only for experienced users or under professional supervision.
Conclusion
Repairing cracked or damaged WPC decking boards is a simple process that you can handle yourself. By following this guide, you will extend the lifespan of your WPC terrace or fencing and maintain its aesthetic appearance. If you do not feel confident doing the repair yourself, do not hesitate to contact professionals who will gladly help you.
