Installation Instructions
New Construction Windows
- Apply membrane strips over the nail fins on the window jamb and head as shown to the left. First apply the two strips marked 1 along the window jambs. This material should extend below the membrane strip at the window sill, and up to the bottom edge of the flap of house wrap material at the head of the window. These strips should be at least 6” wide. Next apply another strip over the nail fin at the head of the window. (marked 2). Overlap the jamb pieces by at least 3” on both ends.
- Remove the tape holding up the flap of house wrap material and let it overlap the membrane tape strip over the head of the window. Using the seam tape specified by the house wrap manufacturer, tape over the diagonal cuts in the house wrap as shown.
- Install exterior siding or finish material around the window, utilizing the integral “J” channel on the window frame if appropriate.
Finish-up and Adjustment
Using fiberglass batt insulation material fill the inside cavity between the sides of the window frame and the rough opening being careful not to overstuff this pocket. NOTE: Do not use expanding foams in this area as it may damage or distort the window frame.
Check the operation of the window and make final adjustments as necessary. Pay close attention that the window jambs are not bowed as this will make operation difficult and diminish performance.
