Silicone sealant boasts the best durability among mainstream sealants. High-grade Class 0 mildew-resistant silicone sealant specially for kitchens and bathrooms can serve 8 to 12 years indoors, while inferior products will turn yellow, grow mold and peel off within only 2 to 3 years. Weather-resistant silicone sealant for exterior windows and curtain walls can maintain stable performance outdoors for 10 to 20 years, and silicone structural sealant for curtain walls has a designed service life of 25 to 50 years. Acidic glass sealant is only applicable to indoor glass and will age and lose its sealing function after 3 to 5 years.
How long is the service life of silicone sealant?
PublishedAt: 2026-07-06