Evo-Stik - All Purpose Flex Silicone Sealant - Black - C20

Unopened, the sealant typically has a shelf life of 12-18 months when stored in a cool, dry place according to manufacturer instructions.

No, silicone sealants are generally not paintable. Paint will not adhere well to the silicone surface.

Drying time is approximately 24 hours for a full cure, but this can vary depending on bead thickness and environmental conditions such as temperature and humidity.

Yes, it is suitable for both interior and exterior use due to its weather-resistant and waterproof properties.

Wipe away any excess or uncured sealant immediately with a damp cloth. For tougher residue, a solvent may be required, but test in an inconspicuous area first.

The 25-year guarantee refers to the product's performance and durability under normal use conditions, provided it is applied correctly and maintained as per instructions.

While excellent for sealing around bathroom and kitchen fixtures, it is not intended as a sealant for pressurized plumbing joints or pipe threads. Use specific plumbing sealants for those applications.

Ensure surfaces are thoroughly cleaned, dry, and free from dust, grease, or previous sealant residue. Test compatibility on a small area if unsure.

Practice application on a spare surface. Ensure the caulking gun is held at a consistent angle and pressure. Smooth the bead immediately after application with a damp cloth or tool.

This can occur in very humid conditions or if the bead is applied too thickly. Ensure adequate ventilation. Allow more time for curing; tackiness usually disappears as it cures fully.

Use a tool designed for smoothing sealant or a damp cloth dipped in soapy water. Work quickly before the sealant begins to skin over.