How to Install Windows to Ensure Smooth Operation and Prevent Water and Air Infiltration
By Mark J. Donovan
||Installing windows in new construction is much easier than installing a window in a finished home. There’s no house siding or trim to remove and you have easy visibility to the framing members in the wall. Most new windows today have a vinyl or metal nailing flange or fin that wraps around the perimeter of the window that makes window installation a breeze. The nailing flange is approximately 1-1/2 inches wide and is perforated with nailing holes all along its length. The nailing flange also offers the additional benefit of acting as a weather seal to prevent water and air infiltration.
Before installing the new window, compare the window dimensions with the window frame rough opening.
There’s no sense lifting up and attempting to install a large and heavy window into a window opening that’s the wrong size.
To install a window in new construction make sure the rough window opening is clean and free from any debris. Also make sure that the house sheathing is flush with the window opening framing. In addition, make sure the house wrap covers all around the window opening and that any excess house wrap is stapled down to the window framing.
The two diagonal measurements should be the same. Normally if the window is new, closed, and has a shipping band around its middle it is square.
Install the ice and water shield by first doing the bottom side of the window, followed by the vertical sides, and finally the top.
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- House Framing and Construction Tips
- How to Install Interior Window Trim eBook
- How to Size Out a Rough Window Opening
Additional Framing Resources from Amazon.com
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