Re: OT- Repairing crack in fiberglass or plastic

Posted by mjbrown on April 07, 2011 at 12:02:59 from (209.150.235.10):

In Reply to: OT- Repairing crack in fiberglass or plastic posted by 550Doug on April 07, 2011 at 09:29:30:

The fix for fiberglass is to use epoxy resin and woven fiberglass cloth. Hardware store resin is usually polyester and has poor adhesion on cured fiberglass surfaces. I recomend WEST 105/206. Sand the surface to degloss. Clean with acetone to remove anything oily (ventilate WELL). Wet the surface with resin mix then lay on the clothe and brush it into the wet resin add more as needed to wet out the glass. Repeat this step several times to build up a strong layup. After it has cured sand and fill the surface as needed to create a smooth surface and paint with a good marine epoxy paint of your choosen color. If your pan cracked it probably was not bedded in wet morter when it was installed. If you can get some under it now it will help prevent cracking in the future. If not make the repair lay up thicker.

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