John61CT wrote:price is irrelevant but is there a big weight difference?
Only 1/2 pound per 4'x8' sheet so for the 9 sheets I need it only adds up to 4.5 lbs.
Epoxy must be a lot cheaper down there than it is up here in the Great Land.
A few years ago when I bought a gallon of resin and a half gallon of hardener it was almost $200.
It is interesting to consider polyurethane varnish as an alternative to paint.
I have some so I will make a test patch and compare it with the TBIII I've been playing with.
I'm not concerned with weight as much as cost.
And comfort with construction.
I detest working with fiberglass.
I built a couple sailboats with it and learned how to do it nicely but can't stand the itch from sanding it.
A few years ago we rebuilt a totaled Class A motorhome and I fiberglassed the new plywood roof.
UGH!
I agree that an epoxy/glass foamie is the best and will last the longest.
But I view my trailer as more of a throw-away project to keep as low cost as reasonably possible.
Even PMF will outlast me...