Whether you're sealing siding, trim, or outdoor joints, Flex Caulk is engineered to withstand direct sunlight and prolonged UV exposure.
How Long Does Flex Caulk Last?
Flex Caulk is built for long-term performance in demanding outdoor environments. Once cured, it forms a flexible, weatherproof seal that resists cracking, shrinking, and UV degradation. When properly applied, Flex Caulk can last for several years, even in harsh conditions or fluctuating temperatures.
Tips to maximize longevity:
- Apply to clean, dry surfaces
- Allow full cure time (12–24 hours)
- Avoid stretching or pulling at the joint during or after curing
Flex Caulk Temperature Ranges
The Silicone Formula cures to withstand temperatures from -70°F to 400°F. It offers extreme heat resistance, making it ideal for areas exposed to intense sunlight.
The Hybrid Formula cures to withstand temperatures ranging from -75°F to 220°F. It can be applied to wet surfaces and is paintable, which adds an extra layer of UV protection and helps blend with exterior finishes.
Both formulas are engineered to stand up to the elements, ensuring a strong, lasting seal on outdoor joints, trim, and siding.
