A couple Q's on epoxy resin ,glass and Varnish.
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A couple Q's on epoxy resin ,glass and Varnish.

  1. #1
    Junior Member KBarnes's Avatar
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    Default A couple Q's on epoxy resin ,glass and Varnish.

    So im spending some much needed time on the 58 Mandella. The original plan was to just refinish the deck. Which I sanded to bare wood and varnished with interlux Gold Spar clear. After doing that the flaws in the gelcoat on the hull started to more apparent. So on goes the work.

    I am new to wood finishing and glass work. My boat has Glass up the sides with the clear finish to see the wood. In spots the finish is dull and chalky. I used some 600 wet sanding and Fiberlay 100 compound to cut it and it started to come around. When i started on the transom the finish needed to be redone. It has no fiberglass on it. overall im bringing the finishes back to par.


    To the Q's

    1) For the Gelcoat. Ive feathered out the scratches and sanded it with 100 grit. DO i fill low spots by spot applying gelcoat and sand flat before Spraying?

    2) I assume the sides where finished with epoxy resin and glass. Would that mean i need to varnish over the clear spots to protect from UV?

    3) Is it okkay to sand with a heavier grit on the clear sides to get through the chalky areas.

    4) I plan on getting epoxy resin to finish out the transom. And I know its backwards. Could i put a coat over my varnish on the deck to get more depth and put a few more coats of varnish on top?

    Thanks
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  3. #2
    Senior Member OFFSHORE GINGER's Avatar
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    Quote Originally Posted by KBarnes View Post
    So im spending some much needed time on the 58 Mandella. The original plan was to just refinish the deck. Which I sanded to bare wood and varnished with interlux Gold Spar clear. After doing that the flaws in the gelcoat on the hull started to more apparent. So on goes the work.

    I am new to wood finishing and glass work. My boat has Glass up the sides with the clear finish to see the wood. In spots the finish is dull and chalky. I used some 600 wet sanding and Fiberlay 100 compound to cut it and it started to come around. When i started on the transom the finish needed to be redone. It has no fiberglass on it. overall im bringing the finishes back to par.


    To the Q's

    1) For the Gelcoat. Ive feathered out the scratches and sanded it with 100 grit. DO i fill low spots by spot applying gelcoat and sand flat before Spraying?

    2) I assume the sides where finished with epoxy resin and glass. Would that mean i need to varnish over the clear spots to protect from UV?

    3) Is it okkay to sand with a heavier grit on the clear sides to get through the chalky areas.

    4) I plan on getting epoxy resin to finish out the transom. And I know its backwards. Could i put a coat over my varnish on the deck to get more depth and put a few more coats of varnish on top?

    Thanks
    Just curious considering the age of the boat are you really sure that is Gel ? #2 once again are you sure the sides where finished off using Epoxy resin , and or.... was it done previously in the past by someone else , and to tell you the truth most likely the sides are done using 6 oz which is a finish fabric commonly used with Epoxy on strip canoes and kayaks and yes i would recommend using Varnish to protect from UV rays . #3 Are the chalky areas in the hull sides white because the fabric was not wetted out properly or ............ in the gel / color . #4 personally i would not put a coat of epoxy resin over the varnish other then appling multiple coat's to give you the depth desired and yes not to be funny but that more or less is backwards considering there are Epoxies out there that have UV qualties that offer a lot of depth overall with some requiring a few coats of Varnish to avoid any yellowing in the future .
    Last edited by OFFSHORE GINGER; 07-17-2013 at 05:41 PM.

  4. #3
    Junior Member KBarnes's Avatar
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    Thanks for the insight.

    What i can tell of the original finish.
    Not 100percent if it is Gel. It seams pretty thick.

    This is the first work performed since ive owned it. The wood was stained at one time that can be seen below fasteners and interior. The finish that was onit when i got it looks like the stain had been sanded out??? or is it possible for UV to fade the stain all the way out if not protected?

    I had talked to Harlin Orrin and he said that he had built the boat but didn't do the finish or rigging of it. As far as the finish over the glass.

    I think the fabric/work was done well. when wet it looks great. Im thinking oxidation build up? Can Gelcoat be done Clear?

    I will continue my varnish on the deck. Should i use epoxy on the transom since it is the water line? or varnish that out also?

    Thanks

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