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Which Epoxy resin

Old 07-13-2018, 09:06 PM
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Default Which Epoxy resin

I read that you should stay away from west system as its to thick and costly

what is the best resin out there for replacing transoms and stringers and decks core replacement structural repairs to replace west system epoxy resin?
Old 07-13-2018, 09:29 PM
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I'm a huge fan of marinpoxy: https://boatbuildercentral.com/produ...cat=MarinEpoxy

I've used close to 50 gallons of it in the last 5 years and it's always done well. I rebuilt a skiff with it and scratch built several boats, never an issue with not curing and wetting 1708 is excellent. They have good prices too.
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Old 07-13-2018, 10:15 PM
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Perfect i will definitely check it out thanks
Old 07-13-2018, 10:26 PM
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uscomposites epoxy...good prices and no/low blush on the slow hardner.
Old 07-13-2018, 10:47 PM
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Hey midcap i have bought a little us composites epoxy before had no issues with it just curious if i need to worry about using certain epoxies for structural applications such as stringers etc if there is a harder epoxy or more brittle epoxy to stay away from i have not dabbled into large quantity use of epoxy but performed 200 small epoxy repair jobs using different epoxy brands local ones online west system us composites i want to be able to fair and gelcoat the repairs as i would with poly and vinyl ester resins i have only applied gelcoat over a handful of repairs i think all west system most others either were hidden repairs not requiring coating or applied epoxy fairing and a topcoat yacht coating such as Alexseal
Old 07-13-2018, 10:52 PM
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Originally Posted by gekko View Post
Hey midcap i have bought a little us composites epoxy before had no issues with it just curious if i need to worry about using certain epoxies for structural applications such as stringers etc if there is a harder epoxy or more brittle epoxy to stay away from i have not dabbled into large quantity use of epoxy but performed 200 small epoxy repair jobs using different epoxy brands local ones online west system us composites i want to be able to fair and gelcoat the repairs as i would with poly and vinyl ester resins i have only applied gelcoat over a handful of repairs i think all west system most others either were hidden repairs not requiring coating or applied epoxy fairing and a topcoat yacht coating such as Alexseal
I am not 100% sure about different epoxies for different layups. I would think there are differences, but not sure.

With the ester resins...I know poly has a few different ones, but I think for the most part vinylester is only one type. FWIW...I prefer working with poly/vinyl if I don't need the superior bonding properties of epoxy.
Old 07-13-2018, 10:59 PM
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I have a sensitivity to the poly vinyl i think after 10 years and enclosed space in the north now i dk just thinking i shoukd switch to more epoxy if i can for smell indoors during upcoming winter was run out of my shop by neighbors and landlord the prior year
Old 07-13-2018, 11:03 PM
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Originally Posted by gekko View Post
I have a sensitivity to the poly vinyl i think after 10 years and enclosed space in the north now i dk just thinking i shoukd switch to more epoxy if i can for smell indoors during upcoming winter was run out of my shop by neighbors and landlord the prior year
that's somthing to consider. don't want to make them mad at you
Old 07-13-2018, 11:29 PM
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Why do you want to use epoxy??
Why not polyester ??
Will do the same job just as well !
Epoxy is not a fix it all and its not magic !
For the type of work you going to doing the GLASS USED is the most important part of you whole job !!

Last edited by tunnles; 07-13-2018 at 11:35 PM. Reason: add to
Old 07-14-2018, 12:06 AM
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No one to make mad anymore dont have the shop

i agree and have gone through drums of poly a year for ren years pretty much repaired every type out there just feeding the brain on epoxy as i never use it unless called for
Although i just did an okume transom in a scarabb with epoxy
Old 07-14-2018, 06:02 AM
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E bond. Full range of proxies and best price.
Old 07-14-2018, 10:31 AM
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Originally Posted by svu View Post
E bond. Full range of proxies and best price.
Ditto
Old 07-14-2018, 10:36 AM
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I 've built a couple of small boats with System 3 epoxies and have been very happy. Their SilverTip epoxy is great stuff!
Old 07-14-2018, 10:52 AM
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I’ve used US Composites which is great stuff. Never had any issues with it. Switched to Raka Epoxy. What I like about it is how it is a 2:1 ratio and you can mix hardeners to tailor your cure time. It’s also very thin and will set out 1708 without having to get the mat wet first
Old 07-24-2018, 11:26 AM
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Default System 3

I use West almost exclusively, but System 3 has no blush, which is compelling for multiple layups
Old 07-24-2018, 11:27 AM
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Default Jamestown Totalboat

Jamestown Distributors Total Boat stuff also looks good. And Cheaper.
Old 07-24-2018, 11:43 AM
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Default Epoxy

I definitely want no blush as most repairs will require gelcoat
Old 07-24-2018, 11:57 AM
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Endurance Technologies (Composites Polymer Division, CPD) has several options from laminating resins on up and many of their hardeners do not use ammonia as a promoter which not only reduces odor and blush but really minimizes skin sensitization. If it's any indication of their reputation, the vast majority of custom Carolina builders use it!
Old 07-24-2018, 12:01 PM
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I almost solely use the 635 thin from US Composites.
Old 07-24-2018, 05:19 PM
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Default Thanks

Thanks everyone i cant wait to try all these out going to try to order them all in small amounts as soon as i can have alot going on and work is hard to earn with weather but i cant wait to report test and in field results

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