R-Guard Spray Wrap Rain Screen

PROSOCO R-Guard Spray Wrap Rain Screen is a fluid-applied air and water-resistive barrier engineered for pressure-equalized rain screen wall systems, tinted dark charcoal so the back-up wall doesn't read through open joints.

What it does

It sprays or rolls on and cures into a durable, rubberized, vapor-permeable membrane that handles ventilated facades while blocking water and air infiltration. The dark charcoal pigment hides the substrate at open joints, vents, and gaps in the cladding.

When and where to use it

• Pressure-equalized rain screen wall assemblies
• Cavity wall and masonry veneer construction
• Stucco assemblies and EIFS
• Vertical, above-grade application
• Substrates: exterior gypsum, plywood, OSB, CMU, cast concrete

Key benefits

• Dark charcoal — visually disappears behind open-joint rain screens
• Vapor permeable, allowing assembly drying
• Seamless application — no laps or holes
• ≤18 g/L VOC, ICC-ES approved, BABA certified
• Compatible with most paints, sealants, and self-adhered waterproofing
• Low-odor, non-toxic

Format

5-gallon containers; 2-year shelf life. Coverage 50–100 sq ft/gal on gypsum/OSB/plywood, 30–60 sq ft/gal on CMU.