WHAT IS CAULK?

Caulk is a thick, flexible, adhesive material that acts as both a glue and sealant. It is applied along exposed joints, using a caulking gun and cures as it dries. Caulk can be used in many ways throughout the bathroom, such as:

• Around sinks and faucets
• Along the top of the tub where it meets the tile/tub surround
• Where tile meets the ceiling
• Along the top of a tub surround
• Along the joints of a tub surround
• Around shower heads and bathtub faucets
• Along the bottom of the tub where it meets the floor
• Along the top of the vanity where it meets the backsplash
• Where the top of the backsplash meets the wall

There are multiple types of caulk available, though not all kinds are suitable for use in the bathroom. Mr. Handyman recommends one that is mold and mildew resistant and designed for use with the materials in a bathroom such as ceramic tile, or a fiberglass tub or enclosure.

Prevent mildew, mold and water damage

Re-caulking the bathtub, sink and shower is an easy way to fix seals that are broken or cracked, and it will help prevent mold and water damage. Bathroom caulking, while it makes a tub, sink and shower impervious to water for many, many years, it does not last forever. Over time, caulking can wear, crack, discolor and shrink, which may eventually lead to water damage. Prevent mildew, mold and water damage by maintaining bathroom fixtures. Plus, a fresh bead of caulk can make your space look brand new again.

How do you know when it’s time to re-caulk your bathroom?

Regardless of the quality of materials you choose or how careful you are with your application, your caulking will eventually need to be replaced, but how do you know when it’s time? Watch for these signs:

• Mold or mildew beneath the surface of the caulk, indicating water leakage
• Caulk is older than five years
• Dried out or cracked caulk
• Peeling or missing caulk

If caulking begins to peel or deteriorate within 12 months of applying it was likely not intended for use in the bathroom.

HOW LONG DOES CAULK LAST?

As a general rule, caulk should last approximately five years. There are a number of variables that will determine the actual length of time between replacement, including:

• Type and quality of caulk used
• Application process
• The condition of the surface when it was applied
• Humidity levels
• Pre-existing mold or mildew
• Cleaning practices

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