Use a putty knife or scraper to peel away any old caulk around the edge of your countertop. If some caulk still remains, cut it away with a utility knife.
Clean or scrub the area with an all-purpose kitchen cleaner. If your countertop is tile, use vinegar or bleach water to clean the area to keep bacteria from growing in the grout of your tiles. Let the countertop dry completely
Place the tube of clear or colored silicone caulk in the caulk gun. Cut off the tip of the caulk at an angle using a knife or a pair of scissors. You need the hole at the tip to be large enough to let caulk through but not large enough that it gushes out. If you're unsure where to cut, start closer to the tip to err on the side of caution.
Start at one corner of your countertop. Place a bead of caulk along the edge where the counter meets the wall. Use a rag to wipe away any excess.
Let the caulk dry completely overnight. If you applied too much caulk and didn't wipe it away, cut away any excess caulk once the caulk has hardened completely.
Things You Will Need
- Putty knife or scraper
- Utility knife
- All-purpose kitchen cleaner
- Vinegar or bleach
- Silicone caulk
- Use colored silicone that matches your walls or clear silicone to caulk your counters. White caulk can give your counters a less-than-professional look if the counter or wall isn't white.