Prepping a deck for refinishing: Insider Sneak Peek
AskTOH painter Mauro Henrique helps a homeowner refurbish a weathered deck
We know—it's another week of reruns on TV. But we've got something new for you, because you're an Insider! Here's a clip from an upcoming episode of Ask This Old House.
Here, Ask This Old House painter Mauro Henrique is helping out a homeowner who's got a big job—a large, weathered deck that needs to be refinished. Preparing the surface takes several steps, but will ensure the best results down the line. They start out by making sure the deck is completely clean, then use handheld sanders around the perimeter and on the steps. But for a job this size, most of the sanding will be done using a walk-behind power sander rented from a home center.
Working in straight lines, the deck gets sanded in three passes, starting with 80 grit sandpaper, then going down to a 60 grit, and last a 40. Since a higher number indicates larger grains of abrasive material, the 80 is perfect to start out with, since it'll really take it to the worn surface. But for the final pass, a finer 40 grit makes more sense—since you're down to the surface that you'll see, you want to be sure you've got more polish and no visible scratches.