Supreme Silicone Window & Door Sealant

 

Product Details

  • 100% silicone
  • 100% weatherproof
  • Lifetime mold-free product protection
  • Meets ASTM C-920, Class 50
  • 100% more flexibility than Class 25 sealants
  • 7X stronger adhesion
  • 30-minute rain-ready
  • Shrink & crack-proof
  • Resists UV degradation
  • Won’t blemish most high-end metal finishes like chrome, bronze & nickel
  • Lifetime guarantee
  • Neutral curing with low odor
  • Non-paintable
See Product Disclaimers page for important details

Product Colors

From the #1 Silicone Brand, Supreme Silicone Window & Door sealant is a premium, 100% silicone and 100% waterproof sealant that provides a reliable seal in weather-prone areas like windows, doors, basements, roofs, sidewalks, siding, tuckpointing and attics. This sealant offers 100% more flexibility than Class 25 sealants and 7X stronger adhesion than Silicone 1™ sealant. And, it offers 50% joint movement capability without cracking, shrinking, breaking down or washing away. This sealant has lifetime mold-free product protection that resists stain-causing mold and mildew growth. Backed by a lifetime guarantee.

Adheres to: most metals & woods, aluminum, composites, brick, stone, stucco, masonry, cement board, glass, ceramic & porcelain tile, drywall, plaster, vinyl siding, PVC, fiberglass & painted surfaces

For complete product details, see packaging label in the "Downloads" tab. 
See Product Disclaimers page for important details.

  1. Remove dirt, grease, moisture, soap residue & old sealant from area to be sealed.  Use backer rod for gaps larger than 1/2" x 1/2". 
  2. Cut nozzle to obtain desired bead size.
  3. PIERCE INNER FOIL SEAL.
  4. Using caulk gun, apply sealant into gap. Smooth with a gloved finger or “tool” the caulk into gap.
  5. Wipe hands & tools thoroughly before washing.
  6. Allow 30 minutes before exposing sealant to water.
Meets ASTM C-920, Type-S, NS, Class 50, Use A, G & O test requirements
Fed Spec TT-S-00230C; TT-S-001543A
To access the safety data sheet, enter the product SKU from the list below in the search field found here. Then select your language and country to download a copy.
Color SKU
White M90015
Clear M90016