Wainscoting in the basement part 13
About 3 hours finish sanding, caulking joints around window trim, more sanding and painting.
Priming the MDF is an important step for a couple reasons. First it prepares the MDF surface to more readily accept the finish coat of paint. Second, and just as important, this step allows you to find imperfections in your previous steps of filling and sanding.
And yes, there were a few!