Spray Wrap Rain Screen | PROSOCO Air and Water Barrier
Spray Wrap Rain Screen is a fluid-applied, elastomeric weather-resistant barrier specifically engineered to meet the demands of pressure-equalized rain screen construction. Designed for vertical, above-grade applications, it forms a seamless, rubberized membrane that protects building envelopes from water intrusion, air leakage, and mold development. Furthermore, its gray color helps mask the backup wall behind joints or vents, improving the visual appeal of open-joint cladding systems.
Product Description
Unlike traditional building wraps, this product adheres directly to exterior gypsum, plywood, OSB sheathing, or CMU. Once applied, it rapidly forms a vapor-permeable, semi-gel coating that minimizes condensation and allows trapped moisture to dry. Additionally, this product helps reduce energy loss, thanks to its superior air sealing properties, and complies with VOC regulations at less than 18 g/L. It is also compatible with most sealants, adhesives, and paints, which makes it ideal for both new construction and retrofit projects.
Key Benefits of Spray Wrap Rain Screen
- Gray color conceals backup walls behind rain screen joints and vents
- Seamless, self-sealing membrane reduces water intrusion risk
- Quick-drying, semi-gel consistency allows fast and easy installation
- Minimizes condensation and energy loss from air leaks
- Compatible with most waterproofing materials and paints
- Low-odor, non-toxic, and VOC-compliant formulation
Common Applications
- Rain screen cavity wall systems
- Exterior gypsum and OSB sheathing
- CMU block walls and cast concrete
- Stucco, EIFS, and masonry veneer wall assemblies
Storage & Packaging
Available in 5-gallon and 55-gallon pails, Spray Wrap Rain Screen offers a shelf life of up to 2 years when tightly sealed and stored unopened. Application coverage ranges from 50–100 sq ft per gallon, depending on substrate type and porosity.
Product Properties
| Property | Value |
|---|---|
| Shelf Life | 2 years in a tightly sealed, unopened container |
| VOC Content | <18 g/L |
| Form | Batter-like, semi-gel liquid, gray color |
| pH | 8.5 – 9.5 |
| Coverage Rate | 50–100 sq ft/gal on gypsum, OSB, plywood; 30–60 sq ft/gal on CMU |
| Freeze Point | 32°F (0°C) |
| Flash Point | Not applicable |
| Total Solids | 63–68% |
| WT/GAL | 11.40 lbs |
| Available Sizes | 5-gallon, 55-gallon |
Pair Spray Wrap Rain Screen with Cat 5 for a complete wall waterproofing system. Visit the official PROSOCO website for product support and specifications.
