Caulking your bathroom floor prevents possible moisture damage from occurring along the perimeter. Caulking the area where your baseboard meets the ceramic floor can prevent rot and mold damage. As a bonus, it also makes the area easier to clean, preventing dirt from sliding underneath the baseboards.
Step 1: Clean the baseboards and area of the ceramic tile floor immediately adjacent to the tile floor. Use a soft bristled scrub brush and floor cleaner to remove any soap scum from the area thoroughly.
Step 2: Vacuum any gap between the ceramic tile and the baseboards around your bathroom floor.
Step 3: Prepare a tube of silicone acrylic caulk. Cut the top off of the caulk, creating a 45 degree angle with an opening that is about ¼ inch wide.
TIP: Unless your floor and baseboards are both white, use clear caulk. If they are both both white, however, purchase white silicone caulk.
Step 4: Slowly depress the caulking gun trigger until the caulk flows out of the nozzle. Wipe off the caulk with a damp rag. If the caulk does not flow freely, use a nail or other long thin device to poke the seal that might have been created within the silicone caulk tube.
Step 5: Place the end of the caulk tube along the gap and slowly depress the lever, creating a bead of caulk. Run this bead of caulk along the length of the room, corner to corner of one wall.
Step 6: Dip your finger into a cup of water. Use your wet finger to smooth the caulk into a uniform, concave shape.
TIP: People who can create a thin, perfect bead may not want to smooth the caulk. There are also tools you can purchase to shape the caulk. into a perfect 45 degree angle. This may be preferable for people seeking a truly uniform appearance.
Step 7: Caulk each side of the bathroom floor using this method.