Does anyone have any experience using water-based Polyutherene clear as a final coat over latex paint. Will water-based Polyutherene turn latex white paint yellow over time, and is this ok to use for gas planes. Any info would greatly help.
Thanks

I have used Minwax Polycrylic over latex.

It does not yellow with age.

Water base poly is fuel RESISTANT WITH THE FOLLOWING CAVEATS: 1. Let the poly dry for a minimum of 7 days before exposing to glow fuel. 2. Do not let the exhaust residue remain on the plane over 4 hours. After 4 hours the poly begins to soften up and get "gummy".

For gas planes (gasoline fuel) the latex is normally fine as is.

I use flat latex for my painting (occasionally semi-gloss) and control the degree of "shine" I want with the poly clearcoat. My warbirds typically get a satin, while my other planes will get semi-gloss or gloss depending on the plane. Be advised - latex and a clearcoat IS NOT going to give you a Mokokote type shine.