If you have cracks, leaks, or gaps around your bathtub or shower, finding a durable and waterproof sealant is essential. Flex Paste is a thick, rubberized paste that can be used on a bathtub and for a wide range of bath and shower repairs. It’s designed to seal out water and air while remaining flexible and tough. Whether patching cracks, reinforcing joints, or resealing seams, Flex Paste offers a waterproof, mildew-resistant seal that holds up over time. 

Ideal for Bathtub and Shower Repairs 

Flex Paste can be applied to many surfaces commonly found in bathrooms, including porcelain, ceramic, fiberglass, metal, plastic, and even wood. It’s perfect for: 

Flex Paste in a cartridge is especially useful for these types of repairs. It's designed to be used with a standard caulking gun, allowing you to apply a controlled bead of paste around bathtubs, showers, sinks, and other bathroom fixtures. 

Flex Caulk Is Another Great Option 

While Flex Paste does an excellent job, it’s worth noting that we also offer Flex Caulk—a smooth, easy-to-use sealant specifically designed for caulking around showers, tubs, sinks, and more. It’s waterproof, paintable, and remains flexible over time, making it perfect for sealing joints, trim, and corners in your bathroom. 

Flex Caulk's Adjustable Trigger Flow Nozzle provides an innovative caulking experience. It’s ideal for users looking for a sleek, clean finish in high-moisture areas and pairs well with Flex Paste for more comprehensive repair projects.