For cracks between tile and tub in a tub surround, which repair is appropriate?

For cracks between tile and tub in a tub surround, which repair is appropriate?

• A. Paint Over Crack
• B. Replace Hard Grout With Silicone Sealant
• C. Replace Tile At Bottom Portion Of Wall
• D. Replace With Hard Grout

Answer: (B)

Joints where tile meets the tub need a flexible, waterproof seal. The area moves a bit with use and is constantly exposed to water, so a rigid repair like hard grout can crack again and allow water to seep behind the tile. Silicone sealant stays flexible and waterproof, making it the best choice for this joint. The right approach is to remove any old grout or caulk from the joint, clean the area, then apply mildew-resistant silicone sealant along the edge and smooth it into a clean bead. This creates a durable seal that tolerates movement and prevents leaks. Replacing an entire tile at the bottom is unnecessary unless the tile itself is damaged, and hard grout would just repeat the problem by cracking with movement. Painting over the crack does not seal against water and will fail over time.

Joints where tile meets the tub need a flexible, waterproof seal. The area moves a bit with use and is constantly exposed to water, so a rigid repair like hard grout can crack again and allow water to seep behind the tile. Silicone sealant stays flexible and waterproof, making it the best choice for this joint. The right approach is to remove any old grout or caulk from the joint, clean the area, then apply mildew-resistant silicone sealant along the edge and smooth it into a clean bead. This creates a durable seal that tolerates movement and prevents leaks. Replacing an entire tile at the bottom is unnecessary unless the tile itself is damaged, and hard grout would just repeat the problem by cracking with movement. Painting over the crack does not seal against water and will fail over time.