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Author Topic:   re-glass

BAJAWHALER posted 12-08-2002 05:28 PM ET (US)
Just purchased a 75 standard 17 ft. The interior has been re-glassed but is in terrible shape and coming off in several places. The gel coat is cracked to the point of coming off with a little scratching. What would anybody recommend as to the kind of cloth and resin to use after I remove all the old cloth and gel coat I can
BAJAWHALER posted 12-10-2002 11:29 AM ET (US)
sorry I asked the question
shoctor posted 12-10-2002 12:11 PM ET (US)
Almost any glass will work for the floor more of the problem of doing it correctly. At the suggestion of some of te forum members i used LBI fiberglass in Groton CT. Very informative and took the time to explain what and how. Realize they may not be close to you or shipping may be expensive but definetly worth the call and look on the site.
www.lbifiberglass.com
Shane
Soho posted 12-13-2002 09:34 AM ET (US)
Baja,
I have read on the forum about using either Epoxy or Polyester resin for repairs. I must admit that remain a little confused on this as I had once read or heard that Polyester Resin did not bond well to cured Polyester ( ie original boat ) whereas Epoxy would. Having used West System for some years now on various sail and powerboat repairs I tend to use it for repairs, and with pretty good results to date in terms of repair longetivity. As to the type of cloth etc, can't offer much there as my stuff has all be minor enough to not require much cloth...
hope this helps a bit
Ciao,
Ron
John W posted 12-13-2002 09:53 AM ET (US)
Bajawhaler, I'm a bit confused on what you mean by the glass "coming off in several places". Do you mean the gelcoat, or is a layer of glass cloth or roving actually delaminating?? If the problem is only that the gelcoat (or perhaps a layer of polyurethane paint) is coming off, I doubt that you want to use fiberglass cloth at all in the repair. A better description of your problem will get you more responses. Pictures would help as well.
Soho, epoxy will adhere better than polyester resin to almost anything and is stronger as well. I generally use West system epoxy for most repairs. BUT....new gelcoat will not stick to cured epoxy, so any visible repairs done with epoxy must be painted. If you plan to gelcoat over a repair, you must use polyester resin instead of epoxy. Epoxy will adhere to cured gelcoat, but new gelcoat won't adhere to epoxy.
David Jenkins posted 12-13-2002 04:31 PM ET (US)
According to West Systems, gelcoat will adhere to epoxy resin if the cured epoxy is cleaned with a brillo pad and water prior to applying the gelcoat.
jimh posted 12-23-2002 07:44 PM ET (US)
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Author	Topic: re-glass
BAJAWHALER	posted 12-08-2002 05:28 PM ET (US) Just purchased a 75 standard 17 ft. The interior has been re-glassed but is in terrible shape and coming off in several places. The gel coat is cracked to the point of coming off with a little scratching. What would anybody recommend as to the kind of cloth and resin to use after I remove all the old cloth and gel coat I can
BAJAWHALER	posted 12-10-2002 11:29 AM ET (US) sorry I asked the question
shoctor	posted 12-10-2002 12:11 PM ET (US) Almost any glass will work for the floor more of the problem of doing it correctly. At the suggestion of some of te forum members i used LBI fiberglass in Groton CT. Very informative and took the time to explain what and how. Realize they may not be close to you or shipping may be expensive but definetly worth the call and look on the site. www.lbifiberglass.com Shane
Soho	posted 12-13-2002 09:34 AM ET (US) Baja, I have read on the forum about using either Epoxy or Polyester resin for repairs. I must admit that remain a little confused on this as I had once read or heard that Polyester Resin did not bond well to cured Polyester ( ie original boat ) whereas Epoxy would. Having used West System for some years now on various sail and powerboat repairs I tend to use it for repairs, and with pretty good results to date in terms of repair longetivity. As to the type of cloth etc, can't offer much there as my stuff has all be minor enough to not require much cloth... hope this helps a bit Ciao, Ron
John W	posted 12-13-2002 09:53 AM ET (US) Bajawhaler, I'm a bit confused on what you mean by the glass "coming off in several places". Do you mean the gelcoat, or is a layer of glass cloth or roving actually delaminating?? If the problem is only that the gelcoat (or perhaps a layer of polyurethane paint) is coming off, I doubt that you want to use fiberglass cloth at all in the repair. A better description of your problem will get you more responses. Pictures would help as well. Soho, epoxy will adhere better than polyester resin to almost anything and is stronger as well. I generally use West system epoxy for most repairs. BUT....new gelcoat will not stick to cured epoxy, so any visible repairs done with epoxy must be painted. If you plan to gelcoat over a repair, you must use polyester resin instead of epoxy. Epoxy will adhere to cured gelcoat, but new gelcoat won't adhere to epoxy.
David Jenkins	posted 12-13-2002 04:31 PM ET (US) According to West Systems, gelcoat will adhere to epoxy resin if the cured epoxy is cleaned with a brillo pad and water prior to applying the gelcoat.
jimh	posted 12-23-2002 07:44 PM ET (US) [Administrative post]