Building a Fishing Kayak Cooler #4: Fiberglassing the Interior

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Blog entry by DustyMark posted 05-02-2019 02:18 AM 734 reads 0 times favorited 0 comments Add to Favorites Watch
« Part 3: Prep Work for Interior Fiberglassing Part 4 of Building a Fishing Kayak Cooler series Part 5: Trimming the Cured Fiberglass »

Tonight I fiberglassed the interior of the cooler.

The Method

Precut the individual panels to make placing them easier and swifter when working with curing epoxy.

Thickened epoxy is put into a 1-quart freezer bag that works like a caulk tube.

Laying a bead of epoxy.

The bead is smoothed out with a plastic scraper cut to the desired radius. The idea of this bead is for the fiberglass to make it around the corners without a void.

Each piece of fiberglass is oversized in one dimension in order to provide overlap of adjacent pieces. I marked the fiberglass cloth with permanent marker and those marks that remain will show since I’m not going to paint the interior. I’m more about function than aesthetics on the inside of a cooler. I’d rather have the pieces of cloth fit correctly.

I’m pleased with the results. The inside of the cooler will be completely blood and waterproof!

Next Steps

The epoxy will reach a “green” cure overnight. I’ll trim the rough edges at the top with a razor and sand the frayed strands of cloth and any rough spots with an orbital sander. I’ll then squeegee on another coat of epoxy.

-- Mark, Minnesota

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