fiberglass resin compatibility??
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fiberglass resin compatibility??

  1. #1
    Senior Member $uperJoe's Avatar
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    Default fiberglass resin compatibility??

    in reading, issues have come up with poly resin being used for repair in boats. my understanding is that the preferred resin to use is epoxy based opposed to poly. the reason seems that the poly will absorb moisture. i could be wrong though. also it has been said that the poly will delaminate from the factory release mold style resin used in hull mfg.

    Are these concerns for the exterior of the boat or are they also a concern in small applications inside? as in i want to secure the battery mount to the inside of the hull and add a few places for speakers. i would not like either piece breaking off and hurting a passenger or flying off the boat.

    any clarification on this issue?

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  3. #2
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    I guess to start out, what is your boat made with?

    50% will say go with poly, 50% will say go with epoxy!

    For what you are planing on I dont think it really matters what you use! Saying your boat is manufactured with poly.

    I do, on the other hand like working better with the epoxy and feel its a little better product!

    Good luck with your project!

  4. #3
    Senior Member $uperJoe's Avatar
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    thanks. with a 1972 regatta and with what i have been reading it seems that most of that period were poly hulls. i think ill just give it a go with thw poly and watch it to see what, if anything happens

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  6. #4
    Senior Member $uperJoe's Avatar
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    i have only been in the jet boat forum since i got here. just found out there is a glass and paint area. could a mod please move my thread to the appropriate area

    thanks
    Joe

  7. #5
    Senior Member Sanger-Spectra's Avatar
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    Delam will be caused by bad prep or a damamged area over a period of time. Prep it right and you will be good with poly, make sure you do not get your work area to smooth, you want to use 24 to 36 grit paper so the resin has something to bite and hold on to.

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