Removing old caulk means cutting the bond, peeling away the bead, and clearing residue without damaging the tub, tile, countertop, or frame. The surface needs to be clean and dry before new sealant is applied. Use plastic tools or carefully controlled blades and consider what the substrate can tolerate.
Cut both edges of the bead carefully
Use a sharp blade only where the surface can tolerate it and keep your hand out of the cutting path. On acrylic, plastic, or soft finishes, a plastic removal tool reduces scratching risk.
Peel the sealant away in long sections when possible
Once the bond is cut, lift an end and pull parallel to the joint. If it breaks, free the remaining stuck areas rather than pulling hard enough to lift paint, laminate, or finish.
Remove remaining film with a compatible product
Some silicone residue needs a purpose-made remover, while other caulks release with gentle scraping and cleaning. Test any solvent in an inconspicuous area and do not mix products.
Let the joint dry before applying new sealant
Moisture, dust, or grease reduce adhesion of the new bead. Also correct mold, movement, or leakage that caused the old seal to fail; applying caulk over a damp base only hides the problem.