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A chemical sealant used to fill in and seal gaps where two materials join, for example, the tub and tile, to create a watertight and airtight seal. The term "caulking" is also used to refer to the process of applying this type of sealant.

Things you need to know

Different types of caulking have different pros and cons, such as price, durability, workability, fumes released during curing, etc. For example, silicone caulking is good for sealing tubs and sinks because it resists water, and latex caulking expands to fill gaps, so it is good for baseboards and crown molding.

Also known as

Caulk, Caulking Compound

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