Sto RapidGuard®

Sto RapidGuard® — Fast-Drying One-Component Air Barrier and Waterproof Sealant
Protect your building envelope with Sto RapidGuard®, a rapid-curing, versatile air barrier and waterproof sealant designed to enhance durability and continuity in above-grade wall systems. This single-component solution accelerates installation and provides seamless protection at critical joints and transitions.

Looking for a fast, reliable sealant that bonds well to various substrates and speeds up project timelines? Sto RapidGuard® simplifies air and moisture barrier detailing with exceptional adhesion and weather resistance.

• Fast-drying formulation allows same-day installation of other Sto air barrier components
• Compatible with concrete, masonry, brick, gypsum sheathing, and common substrates
• Eliminates need for mesh, fabric, or tape at rough openings and sheathing joints, reducing labor
• Cures effectively in wet conditions and on damp substrates to prevent weather-related delays
• Gun-applied, easy to spread, and user-friendly for various construction teams

System Composition & Coverage

• Gypsum Sheathing Joints: 12–18 linear meters (40–60 linear feet) per sausage at 20-30 mils WFT, 2-inch width
• Rough Openings (2x4 framing): 6.4–10.4 linear meters (21–34 linear feet) per sausage at 12-20 mils WFT
• Rough Openings (2x6 framing): 4.6–7.3 linear meters (15–24 linear feet) per sausage at 12-20 mils WFT

Product Bulletin

Safety Data Sheet

Sto RapidGuard® Demonstration