Re: [Paddlewise] Abused kayak

From: John Winters <735769_at_ican.net>
Date: Mon, 8 Mar 1999 08:53:35 -0500
Dennis wrote;

that epoxy.
>
>So for the lay person.....Should we consider epoxies interchangable with
>standard polyesters for general boat repairs?

No. For example, only certain epoxies will cure properly in the presence of
water or at low temperatures. For in-the-field repairs polyester cannot
replace the proper epoxy. If you must laminate to white oak, polyester just
won't cut it. If you wnat a good colour match on a polyester boat, epoxy
won't cut it unless you paint it. The bond between polyester and epoxy
vaires with the type used. Best to use epoxy for all repairs on epoxy boats
to be safe.

>By epoxies I'm assuming items
>under the West or MAS labels, right?

West, East, MAS, System Three, Fiber-Glass- Evercoat, etc formulate
epoxies. Most work fine if you follow the directions. Mosty boat builders
go straight to the manufacturers (Ashland, Reichold, Ciba-Geigy etc.) for
products tailored to suit their needs.


Will standard gel coat adhere to an
>epoxy based repair as well as a polyester based repair?

Far better to use polyester throughout to assure no problems. Mixing and
matching can cause problems that the pros know how to avoid.

Cheers,
John Winters
Redwing Designs
Specialists in Human Powered Watercraft
http://home.ican.net/~735769/



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Received on Mon Mar 08 1999 - 06:00:45 PST

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