Where Should You Not Use Flex Caulk Silicone?
Flex Caulk Silicone delivers powerful waterproof sealing indoors and outdoors, but it is not suited for every surface.
It should not be used on:
- Porous surfaces
- Wet or damp surfaces
- Areas that will be painted
For these applications, use Flex Caulk Hybrid instead. It bonds to porous and non-porous materials, can be applied to wet or dry surfaces, and is paintable once cured.
Flexpert Tip: Apply Flex Caulk Silicone to clean, dry surfaces. Once cured, it is 100% waterproof.
Choosing the correct formula ensures stronger adhesion and long-lasting results. To learn more about Flex Caulk, download our free Product Reference Guide.
