Adhesives and Sealants — FAQ
What's the difference between silicone and acrylic latex caulk?
Silicone caulk remains permanently flexible, 100% waterproof, and resists mold better—ideal for wet areas. Acrylic latex is paintable and easier to apply but cracks over time and isn't truly waterproof. Use silicone for kitchens, baths, and exteriors.
How long does silicone caulk last before needing replacement?
Quality silicone caulk lasts 10-20 years when properly applied. GE Supreme and Gorilla formulations offer maximum longevity with crack-proof guarantees. Replace when you see separation, mold penetration, or loss of flexibility.
Can I paint over silicone caulk?
No, standard silicone caulk is non-paintable. The surface repels paint. If you need a paintable sealant, use a specially formulated paintable silicone hybrid or stick to acrylic latex for paint-grade trim work.
What's the best way to remove old silicone caulk?
Use a sharp utility knife or caulk removal tool to cut the bead free, then peel manually. Remove residue with mineral spirits and a plastic scraper. Ensure the surface is completely clean and dry before applying new caulk for proper adhesion.
Should I use white or clear silicone caulk in my bathroom?
Use white caulk against white fixtures and uniform tile for a seamless look. Choose clear caulk for natural stone, multi-color tile, or glass where you want the seal to disappear. Clear shows less dirt over time but can yellow slightly.
How long does silicone caulk take to dry before using the shower?
Most silicone caulks skin in 30 minutes and cure enough for light water exposure in 2-4 hours. Wait a full 24 hours before heavy shower use or submersion. Cure time increases in cold or humid conditions—always check manufacturer specifications.
