Q&A for How to Fiberglass a Boat

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I have accidentally drilled a 3mm hole where the boat goes on the skidbar; how can I repair it?

Community Answer

Clean the hole, rough up around hole, and fill with dowel rod sand. Go over with a fiberglass mat and resin.

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Question

What is wrong if my fiberglass resin is still tacky after several days?

Community Answer

Probably not enough hardener, or the hardener was mixed in unevenly and you had some portion of the resin mix that has no hardener in it. You might have to grind it off and start again or get it out using solvent. Another reason might be temperature. It’ll need a certain amount of heat to cure. It’ll take a long time to cure in the cold.

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Question

How do I repair an old fiberglass boat transom?

Community Answer

Cut out the inside wall, remove wood, clean out debris, cut new wood to size, install fiberglass mat, and resin several coats.

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Question

I have bought a ready-made wooden boat. Is it advisable to fibre glass the bottom of the boat? Or should I just leave it as it is?

Community Answer

No, do not do that, as moisture will get trapped and it will end up rotting. Instead, use a good marine paint, such as international yacht high gloss. Yes, it requires more effort but the boat will last longer.

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