I'm wrapping up a project that includes 1/4" tempered hardboard. Original plan called for 1/4" plywood, but I had the hardboard on hand. Now I'm wondering if I apply a spray polyurethane, or a spray clearcoat enamel, or paint, will the hardboard absorb the sprayed material & delaminate. Don't want to ruin the project due to a bad call on finish.
Your comments are appreciated.
I guess this question might apply to MDF as well.