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View Full Version : Shelf life of fiberglass resin



Ed Donnelly
06-07-2009, 07:00 PM
What is the shelf life of fiberglass resin??
I have 3 1 pint cans that are at least 5 yrs old..
Would like to use it to seal some leaks on my stone waterfall...Ed

gcarter
06-07-2009, 07:29 PM
Probably 60-90 days.
OTOH, go for it.....what do you have to lose?

Ed Donnelly
06-07-2009, 08:15 PM
Thanks George; I'll try it one day this week and let you know
what I loss(or not).................Ed

MOP
06-07-2009, 09:19 PM
Ed I have some that is quite old and have used it off and on for various stuff, seems as if it still nice and pourable it keeps working. For anything important I run out and grab new stuff. I have a bunch of squeeze tubes of epoxy that I bet are over 30 years old it still works fine.

mrfixxall
06-07-2009, 09:56 PM
make sure you stir it up real good before applying:)

Carl C
06-08-2009, 05:34 AM
Ed I have some that is quite old and have used it off and on for various stuff, seems as if it still nice and pourable it keeps working. For anything important I run out and grab new stuff. I have a bunch of squeeze tubes of epoxy that I bet are over 30 years old it still works fine.

Noooo. You got rid of your rocking chair avatar. You had that forever, it was so cool.....:nilly:

Lenny
06-08-2009, 07:56 AM
As George said Ed, it is 3 months. After that the wholesalers discount barrels of resin by about 30% because of it. At that point they recommend that it be used for re-inforcement after the inital lay up.

Pismo
06-08-2009, 08:33 AM
I've used stuff 10 years old without any problem. It still cures up fine, I am sure it is not as strong tho.

Lenny
06-08-2009, 10:11 AM
Just an FYI as well, MEKP (catalyst) DOES go bad if exposed to sunlight for extended periods of time. It should be stored in a closed container (obviously) and in a dark room or cabinet.