Thule boxes are mounted to the roofs of vehicles and used for storage. The units sometimes take a beating because they are exposed to the elements, stray rocks and debris. If your Thule box has seen better days, it can be repaired with items easily found at most hardware or home-improvement stores. Repairing a cracked Thule box is a project most people can achieve in one afternoon or less.
- Skill level:
Things you need
- Fibreglass cloth
- Epoxy resin
- Rubber gloves
- Coarse-grit sandpaper
Sand the area around the crack inside the Thule box. Use only coarse-grit sandpaper, instead of fine-grit, so fibreglass will adhere better.
Cut at least two sections of fibreglass cloth. Each section should be at least two inches beyond the edge of the crack in all directions.
Mix the epoxy using the ratios specified on the package. Put mixed epoxy on a disposable paper plate.
Apply a layer of epoxy to the sanded area on the Thule box.
Place the fibreglass fabric over the crack. Remove air bubbles from the applied fibreglass with a squeegee.
Repeat this process with epoxy and your second layer of fibreglass. If you choose to use more than two layers, continue to repeat this process until all layers are used.
Apply another thin layer on top of your final piece of fibreglass. Squeegee any air bubbles out to seal the fibreglass matting.
Tips and warnings
- Always wear rubber gloves when handling epoxy. Epoxy hardens quickly and can irritate your skin.
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