Caulk is used to create a seal in a tub where the tile and the tub join. Caulk prevents water from seeping up into the tiles and causing the tiles to separate from the wall and mildew to form. Caulking a tub will take a couple of days if you need to remove old caulk because the area will have to completely dry before you can apply new caulk. It can be accomplished in an hour or two if you’re starting with clean surfaces.
Remove any old caulk. Silicone caulk can be removed with a razor knife and a scraper. Be careful not to damage the tub or the tile. Water-based caulk are harder to remove where as silicone caulk is more flexible. Use a hair dryer to soften the caulk and then scrape it out.
Use silicone caulk on fiberglass. Water-based caulk can be used on ceramic tubs and tiles. Exterior or oil based caulk is not recommended for this type of project.
1) Thoroughly Remove all old caulking and clean tub ledge and wall
2) Place masking tape on tub edge, approximately 3/16 of an inch away from the wall.
3) Place masking tape about 3/16 of an inch up the wall around the tub.
4) Fill tub with water to the overflow height. (NOTE: DO NOT LEAVE CHILDREN OR PETS UNATTENED AT ANYTIME AND TO PROPERLY SECURE THE AREA SO NO ONE CAN HAVE ACCESS TO IT)
5) Place caulking between tub and wall joint around tub.
6) Get some liquid dish soap and stick your finger into soap and smooth off caulking. Allow extra caulking to go onto masking tape.
7) Remove masking tape while still wet.
8) Leave water in tub till caulking is dry and empty water from tub.
By caulking a full tub the space between tub surface and wall is at a weighted dimension
WARNING : Clean up any spills or drips immediately. Silicone caulk are very difficult to clean once they’re dried and leave a film on your hands.
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