Code name “Baby”

[sternwake]

One other benefit of this potential overkill.epoxy method, is that epoxy will cure, as thickly as one can apply it, wthout excessive waste. It slowly g3ts thicker and thicker as it beg8ns to cure, and one can work with it in this stage, to attemot to keep it level, or zometimes a plastic can be placed atop it, and one can push the slowly hardening epoxy putty i to shape, say amd make.a.90 degree corner have a nice 'fillet' on rhe inside, and littl3.to no sNding once.plastic is pulled.

Epoxy is overkill, but consider the fact that after 4 hours,
Of cure time, it is stink free.
In four hiours, one can apply one coat of epoxy, that is 10 x as thck as one.layer varnish/polyurethane and is far more.water resistant than n 10 layers of varnish, applied 8+ hours aPart, in warm ambients, , sanded lovingly, in between each coat over a week +.


Plywood subfloor, i would get a can of 15$ white drywall.lrimer apploed.onnjndserzide, at a minimum.
Maximum.overkilk would be epoxy rolledmontwice.on bottom.side.
But aluminum foil,.wiped with 91%ipa, ill bond well.to epoxy.

Paint on a layermof epoxy, and while still gummy, lay hd alumknum foil atop shinyy side showing atop, press.from.middle.to edges, with a second set of hands, or screw other human 2+ hands system and use spacers and clamps to holdnit aloft.amd apply with minimal creases.

Epoxy will cure without open air above.it, like poly /varnish while their solvents need open air to evaporate.
Epoxy is expensive, and not tolerant of the imprecise, but it can perfprm.the task far better, in much less time, than the usual topcoat suspects.

Stink free,.in 4 hours.
Huge factor.for.me.last fall.