Epoxy vs Polyester Resin

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Johnny
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Epoxy vs Polyester Resin

Post by Johnny » 05 Apr 2015, 09:53

There is always some misunderstandings as to what is what and how
each was designed to be used.
Also, misused names for the two very different products.
The credit for this very educational article goes to Don Casey, BOATUS.com

http://www.boatus.com/boattech/casey/polyster-epoxy.asp
http://www.tinboats.net/how-to-build-a-transom/
http://www.tinboats.net/varnish-vs-polyurethane/
All about Primers = http://www.tinboats.net/primer-and-paint-basics/
Paint, Thinners and Applications = http://www.paintingforpainters.com/

1959 Crestliner Commodore 14'
1959 Lone Star Malibu 14'
1958 Johnson 35 RDE-19 Sea Horse
1958 Johnson 35 RDS-20 Super Sea Horse

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huntinfool
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Location: Katy, Texas

Re: Epoxy vs Polyester Resin

Post by huntinfool » 05 Apr 2015, 10:29

Having done fiberglass repairs since highschool back in the '80's,
This is spot on. Good info.

duckfish
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Joined: 06 Mar 2015, 23:32
Location: Lebanon Co., PA

Epoxy vs Polyester Resin

Post by duckfish » 05 Apr 2015, 10:38

Thanks. Good explanation of the basics.

One thing he doesn't cover is the major difference in nuisance/toxic fumes between the 3. Unless working completely outdoors, you really should wear good respirator protection when working with polyester or vinylester. Epoxy (at least the ones I've used) is fairly innocuous. Since my boat building projects thus far are pretty small, I choose to use only epoxy these days. I can't afford to lose any more brain cells and I hate wearing a respirator. The other benefits to epoxy get a little more involved.

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