Install house wrap over an approved exterior sheathing in “shingle-lap” fashion with higher courses lapped over lower courses by at least two inches. Vertical seams created by ending one roll and beginning another should have an overlap of at least size inches. When cutting, use scissors. Attach the house wrap so that it is flat and tight. Start with lower course, two to three feet from the corner and continue nailing or stapling as you move around the house. Fasteners must penetrate the stud or nail base material. Secure the house wrap firmly in place by fastening it every 12” to 18” along the vertical studs using large-headed or plastic cap nails, or 3/4 crown staples. Use Insultex® Seam Tape to seal all the seams.

Make an inverted Y cut in the house wrap at the rough opening. Then cut straight across the top and make 45 degree cuts from the corners to create header flap. Fold the flaps in through the opening at the two sides and the sill, fastening them inside with staples about every six inches. Temporarily tape the header flap up to expose the nail base material. Install the sill flashing over the house wrap. Install the window per manufacturer’s instructions. Apply a continuous bead of caulk behind the top and side window flanges only and then install the window. DO NOT APPLY CAULK ACROSS THE SILL FLANGE to allow for proper drainage. Next, install jamb flashing over side window flanges. Next, install head flashing over the top window flange and extend beyond the jamb flashing. Remove the temporary tape from header flap and fold back down over the top flange. Next, seal header flap with Insultex® Seam Tape.