RP-201 KoolFlex Silicone Sealant Caulk

201 Silicone Sealant Caulk is a medium-modulus, 100% silicone sealant formulated for joint and detail sealing on commercial roofing systems. Delivers ±45% joint movement, 600% elongation, and 140 psi tensile strength. Ideal for flashing terminations, edge seals, penetrations, and detail reinforcement.

• Handles Real Roof Movement: Accommodates ±45% joint movement with high elasticity, helping joints stay sealed through thermal expansion and contraction.
  
  
• Fast Skin, Fast Turnaround: Skins over in 30–60 minutes and cures quickly, allowing details to be completed without slowing the job.
  
  
• Primerless Adhesion to Common Roof
  
  
• Materials: Bonds to metal, masonry, concrete, and most non-porous substrates without primer, saving time and extra steps.
  
  
• Built for Harsh Roof Environments: UV-stable and weather-resistant with a wide service range (–50°F to +280°F), so it holds up long term on exposed roofs.