Window Frame Installation
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Window Frame Installation

Window frame installation can be easy, although you need to take care and follow the directions of installation step by step.

Window frames are generally assembled in a mill. The preassembled window frame is easily installed, but care should be taken. Regardless of the quality of the window purchased, it is only as good as its installation. Before actually installing a window, apply a primer coat of paint to all wood members to prevent undue warpage.

The general procedure for the installation of a window frame is very similar regardless of style or manufacturer. However, always refer to the manufacturer's instructions for any specific recommendations. For example, some manufacturers recommend that the sash be removed from the frame to prevent breakage and provide easier handling of the unit. Others specify not only that the sash be left in the frame but also that diagonal braces and, in some cases, reinforcing blocks be left in place to insure that the frame remain square and in proper alignment.

When a siding material is applied over sheathing, the windows are installed first and the siding applied later. Strips of 15-pound asphalt felt should be put over the sheathing around the openings.

Place the frame in the opening from the outside, allowing the subsill to rest on the rough frame at the bottom, and hold the unit up tightly against the building. Level and plumb the window frame, then wedge with shingles and tack in place. Check the sill and jamb with the level and square. When everything is in order, use 16d galvanized nails through the outside casings; or, if blind stops are provided, use 8d common nails. (When window frames are furnished with blind stops for installation, the sheathing should be installed 1 1/2" black fro the window rough openings. The nails should be spaced about 12" apart. They should penetrate the sheathing and/or the trimmer studs and the header over the window. While nailing, open and close the sash to see that it works freely. The side and head casings are fastened in the same manner.

When a panel siding is used without sheathing, the windows are usually installed after the siding is in place. Before installing the window, place a ribbon of calking sealant over the siding at the location of side and head casings. Install the window as described earlier. Then place some calking at the junction of the siding and the sill and install a small molding such as a quarter-round. If required, place metal flashing over each window. On the back of the casing of some windows the manufacturer provides a built-in calking. This is a bulb-type vinyl that remains pliable and provides a weather tight fit.

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Comments (1)

Wonderful guidelines to follow and presented well with an easy to follow method. Out of votes so will promote.