R-Guard Installation Detail
Inside/Outside Wall Corners
wood construction with plywood/OSB sheathing
Apply FastFlash or Joint & Seam Filler to all inside corners, fill outside corner joint with Joint & Seam Filler. Use a dry joint knife or trowel to spread 1 inch beyond seam and outer cut edge to a minimum thickness of 12 mils (FastFlash) or 20 mils (Joint & seam Filler).
Apply the selected R-Guard primary air and water-resistive barrier over the prepared sheathing wall.
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