I'm going to be installing a mesquite floor in a few days. It's solid 1/2" thick flooring in a glue-down application. The adhesive I'm using is Bostik's Best. It's a urethane adhesive that when cured is still elastic which allows the wood to move. The space I'm putting it in is new construction and currently has just the 3/4" subfloor. I'm wondering if I should put down something like 1/4" plywood over the subfloor before laying the floor or just laying right on top of the subfloor.