How do you smooth sanded caulk? Use a new piece of coarse sandpaper for the most effective smoothing effect. Coarse sandpaper will take larger chunks out of the bumpy dried caulk. Use fine sandpaper later in the process to smooth the final product. Fold the sandpaper in half so it fits comfortably in your hand.
When should you use sanded caulk? Therefore, the primary use of sanded caulk is to fill large gaps where shrinking caulk could result in poor adhesion between the caulk and the tile, drywall, wood, stone and so forth. Sanded caulk also may be chosen to match the look of grout.
Do you need to seal sanded caulk? You do not need to seal sanded caulk after application. Sanded caulk is simply caulking with some texture added to it, but the sand does not change the water-resistant properties of the acrylic, latex, or silicone caulk. In fact, the chemicals in sealant may degrade caulk if left in contact for a period of time.
How long does it take for sanded caulk to cure? Budget at least 3 to 12 hours for these products to dry and a full 24 hours to cure. For latex-based products, 24 hours is also recommended before water exposure. Polyurethane caulks can take up to 10 days to cure fully.