Gelcoat Repair Calculator

Calculate material quantities for gelcoat repair area including filler, hardener, and pigment

Input Parameters

Results

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Repair Area
sq in
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Gelcoat Required
fl oz
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MEKP Hardener
ml
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Finish Sand Grit

Reference

Gelcoat: ~0.55 fl oz per cubic inch MEKP Hardener: ~1.5% by volume (0.44 ml per oz gelcoat) Finish sand: 600-800 grit wet sand