Caulk is a flexible product that is usually found where edges or corners meet; caulk is used in edges or corners because of structure settlement or seasonal changes which causes slight movement over time.
Caulk is also used in edges and corners to give a watertight seal and help prevent leaks and water damage from occuring.
Caulk deteriorates much faster than grout and also breeds mold and mildew faster which causes replacement to be necessary every couple years depending on the environment and maintenance methods.
Caulk removal and installation varies in every situation based on the amount of material used and the type of caulk or silicone used.
Re-caulking not only helps with sealing but it also Brings Beauty Back to Tile & Grout.