Can the topcoat be sprayed?
Do “quick dry” paints work on fiberglass doors? Quick dry paints often have fast evaporating solvents like acetone (finger nail polish remover) and some slower evaporating solvents. Cases are known where overspray from an interior fast dry paint was over painted before the slower evaporating solvents had flashed off. The result was blistered paint. What happens when topcoat and stain are applied and the temperature remains 50°F for only a few hours before cooling significantly? The topcoat will sometimes whiten in areas. Graining appears to be more susceptible. It is probably because the temperature went below the minimum film-forming temperature of the topcoat before the film was well built, trapping water, and disrupting the film build. Solution: If only a small area is affected, apply some stain and wait until spring to finish. If generally milky, wait until spring, then strip and refinish. What is the ‘white powder’ that has appeared on my door stained with the Therma-Tru finishing
