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Author Topic:   Gelcoat Over 3M 5200

whalerajm posted 05-25-2004 11:24 PM ET (US)
The previous owner of my 1975 Montauk filled several old screw holes below the waterline (looks like multiple old transducer mountings) with silicone sealant. Ovewre the winter I pulled off/out all the silicone (it was bone dry!) drilled out the holes, pumped in some 5200, inserted wood dowels and then filled last 3/4 inch with 5200.
Question:
Can I countersink into 5200 and cover with Spectrum Gelcoat Paste? Will Gelcoat bond to the 5200?...or at least get grip on edge of hole and hull if I rough it up a bit?
mfrymier posted 05-26-2004 09:46 AM ET (US)
I did that EXACT thing using 5200 and Spectrum paste/patch kit. Seems to be holding fine, although I am certainly no expert!
John O posted 05-26-2004 01:41 PM ET (US)
Why not counter sink and then use Epoxy and either gel coat over that or use bottom paint? It might be over kill but I prefer the West System epoxy as my best defense from moisture.

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Author	Topic: Gelcoat Over 3M 5200
whalerajm	posted 05-25-2004 11:24 PM ET (US) The previous owner of my 1975 Montauk filled several old screw holes below the waterline (looks like multiple old transducer mountings) with silicone sealant. Ovewre the winter I pulled off/out all the silicone (it was bone dry!) drilled out the holes, pumped in some 5200, inserted wood dowels and then filled last 3/4 inch with 5200. Question: Can I countersink into 5200 and cover with Spectrum Gelcoat Paste? Will Gelcoat bond to the 5200?...or at least get grip on edge of hole and hull if I rough it up a bit?
mfrymier	posted 05-26-2004 09:46 AM ET (US) I did that EXACT thing using 5200 and Spectrum paste/patch kit. Seems to be holding fine, although I am certainly no expert!
John O	posted 05-26-2004 01:41 PM ET (US) Why not counter sink and then use Epoxy and either gel coat over that or use bottom paint? It might be over kill but I prefer the West System epoxy as my best defense from moisture.