Prosoco R-Guard Cat 5 Rain Screen

Prosoco R-Guard Cat 5 Rain Screen



  • Solvent free. Isocyanate free. Phthalate free. Complies with all VOC regulations.
  • Bonds to most common building materials without priming.
  • Bonds and cures in wet weather and on damp substrates.
  • Silane functional polymer provides superior long term adhesion, crack bridging and weathering characteristics.
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Cat 5 Rain Screen is a roller applied air and waterproof barrier that produces a highly durable, seamless, elastomeric weatherproof membrane on exterior sheathing behind open-jointed or vented rain screen cladding. Cat 5 Rain Screen is proven to prevent water and air penetration of the building envelope in conditions ranging from everyday weather to the drenching rains and 155 mph winds of a Category 5 hurricane.

Utilize Cat 5 Rain Screen as the primary air and water barrier over above grade wall assemblies prepared with R-Guard Joint & Seam Filler and/or R-Guard FastFlash.