R-Guard Installation Detail
Rough Opening with FastFlash & Building Wrap
metal studs with gypsum sheathing/OSB sheathing/plywood
Apply FastFlash or Joint & Seam Filler as shown here.
Cut existing building wrap way from rough opening a minimum of 2 inches.
Step Three Apply AirDam to the outer edge of the rough opening and tool to a minimum of 20 wet mils.
Press building wrap into wet AirDam.
5. Apply AirDam at interface of building wrap and rough opening, and tool it to a minimum of 20 mils, so that it half covers the building wrap and half overlaps into the rough opening.
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