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post #1 of 7 Old 06-02-2006 Thread Starter
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Gelcoat repair

Looking for direction on repairing scratches to the gelocoat of my boat. One scratch exposes a very small portion of fiberglass. No trouble as far as sailing or staying afloat but they are an eyesore.

Any suggestions on literature or process/product would be appreciated.

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post #2 of 7 Old 06-03-2006
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gel coat repair

I've had great success with aproduct called Evercoat gel coat. Its a 2 part epoxy like gel coat. Clean and rough up the area to be repaired, the apply several(5 or 6) coats ,letting each dry completely. Raise the repair slightly above the surrounding fibreglass, cover the final coat with saran wrap and masking tape for 24 hours. When cured hard, begin sanding WITH A BLOCK and 600grit wet/dri paper. then go with 900, and finish with 1200 grit paper. When the repair is flush, wasx and polish. You won't see the edge or seams..Product can be tinted if necessary. Remember, degrease with acetone before each coat.
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post #3 of 7 Old 06-03-2006
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Check out Nigel Calder's and Don Casey"s books. Both give good details on gelcoat repairs.
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post #4 of 7 Old 06-03-2006
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NOT Saran wrap => stiffer Mylar

I used to work with a repair man that did gelcoat work and he would clean/sand out a scratch/ding and dab in the repair gelcoat and then lay a piece of heavy weight mylar/acetate over the spot and use a squeege to get it down smooth and then wipe up the excess that squeeged out and tape the edges down. If he was careful and did not get any bubbles in it and the squeegee job was right he only had to buff the spot out after peeling up the mylar, it was that smooth.

The saran wrap can be made to work in a pinch but it has a tendency to wrinkle. and the resulting finish is seldom as glass smooth as the mylar.

Last edited by sailandoar; 06-03-2006 at 11:12 PM.
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post #5 of 7 Old 06-04-2006
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Mylar is likely very good, but may not be available. Another alternative is wax paper--a bit stiffer than saran wrap, and readily available.
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post #6 of 7 Old 06-05-2006
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If acetate will work as well, as indicated by a previous poster, you can get acetate fairly easily... overhead transparency film is often made of acetate.

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post #7 of 7 Old 06-05-2006
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Mylar cab be found at any art supply store, but also most stationery and copy shops. Acetate melts easily, so the "laser transparency" sheets are usually mylar these days.
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