Setting Super-Windows in a Double Stud Wall

Designer and project manager Steve Daly applies Siga Wigluv tape to the edges of the window opening for waterproofing.

Applying Wigluv tape to the side jamb and lapping down over the sill tape.

Applying Wigluv tape to the head jamb.

Sealing the corner joint of the opening with a strip of Wigluv tape.

Operations Manager Evan Smith screws a temporary rail over the window opening to keep the window in place for leveling, squaring, and fastening.

Smith and Daly set a window into the opening.

Attaching a temporary stop block to the window buck to hold the window steady during leveling, squaring, and fastening.

Wedging the top corners of the window in place with shims.

Centering the window in the opening.

Setting the self-tapping, structural lag screw (supplied with the window unit) in place. Windows are pre-drilled at the factory to accept three lags in each side and two in the head rail. Plastic caps for the lag screws are also supplied.

With the tilt-and-turn sash open, Smith checks the hinge side of the unit for plumb ...

… then sends home the lower lag screw on the hinge side of the unit ...

… and checks for smooth tilt operation.

The window sill is checked for level ...

shimmed under one corner …

… then fastened with a lag screw through the pre-drilled hole on the strike side of the window.

After driving all3 screws on the strike-side jamb, lag screws are driven through the window’s head rail.

Taking down the temporary rail. The installed window is now ready for head flashing and trim.

A final check for operation--all done.

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