MAS gives an "official" shelf life of 1 year, but they say they have had no problems with much older stuff. I have epoxy that is several years old and still works fine.

: I bought a CLC kit a couple of years ago. Children, work and general hectic
: life prevented me from building the boat in as timely a fashion as I would
: have liked. The hull is complete, with fillets and I am finally ready to
: start fiberglassing. I have heard different views on shelf life of
: epoxies. I have MAS epoxy and it has always been stored at room
: temperature. Is two years too long? Do any of you have experiences with
: this issue? Any input would be appreciated. Thanks.

: Brent in Durham, NC