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Old 09-01-2008, 11:28 AM
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waggoner5 waggoner5 is offline
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Join Date: Jan 2006
Location: Golden, Co
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Most likely it is an impact break and the gelcoat is the only part that is truly cracked. This happens because the gelcoat is a hard coating that will not flex. The fiberglass does flex and with impacts the gelcoat spider cracks. You should sand down the gelcoat to the mat and recoat. You can use a brush to apply the gelcoat then sand down to a uniform coating. If you just prime, the cracks may or may not stop. Over time gelcoat cracks can lead to delamination where the gel lifts of the mat. Fix it right this time, and never worry again.
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