In my shed I just found 3/4 can of Rustoleum marine spar varnish. Last time I varnished anything was on the first boat, probably 3 years ago. Use it or lose it?
old varnish,use it or lose it?
- Thread starter DAVA390
- Start date
I use the Rustoleum brand marine varnish myself, and I find that after a year or so in the can it begins to thicken, which causes it to dry more slowly and give you more bubbles and brush strokes than when it was new. You should be able to make it as good (or better) than new by mixing in some mineral spirits.
In your shed?...
if the varnish ever got cold enough to freeze, I would not even try to use it... you could end up with a mess.
Freezing can change the properties between the carrier and the actual varnish solids that is left after the carrier evaporates from it...
it never changes for the better and if it doesnt cure out fully, or within a reasonable time, it is virtually an unusable product.