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1. Align the edge of a heavy piece of paper with the window stop and fold the bottom to match the angle of the sill. Lay a protractor (Fig. B) on the folded paper to determine the angle. Then measure the interior height and width of the window frame. Use these measurements to order your sash replacement kit.
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2. Remove the lower sash and cut the sash cords. If your window has weatherstripping or hardware other than sash cords, pry out or unscrew these to remove the sash.
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3. Pull or pry the parting stop from the groove in the window frame and discard it. Remove the top sash, cut the sash cords and take out the sash weight pulleys. Remove the sash weight cover and weights. Stuff the cavity with fiberglass insulation.
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4. Screw the jamb liner clips to the jamb with no. 6 x 3/4-in. Pan head screws. Position clips about 4 in. from the top and bottom and distribute the remaining clips evenly between them. Make sure to leave a 1/16-in. space between the clips and the blind stop to allow space for the jamb liner to slide in.
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5. Snap jamb liners over the metal clips after installing the sash stops and gaskets according to the instructions included with your window. Align the jamb liner so its outside edge fits between the blind stop and the metal clips. If your jamb liner has a vinyl flap facing the outside, make sure it lays over the blind stop. Press firmly over each clip location until you hear or feel the liner snap onto the clips.
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6. Slip the new parting stop into the groove in the top jamb with the weatherstripped edge facing the outside. Drill 1/16-in. pilot holes and nail the stop in place with three 4d finish nails. Replace the wood interior stops on the sides and top of the window and nail them in place with 4d finish nails.
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7. Slide the sash lifts down to within about 10 in. Of the windowsill. Press down firmly with a flat-blade screwdriver. Twist the screwdriver slightly from horizontal to slide the lifts. Then twist back to horizontal to engage the lifts in their new locations.
CAUTION:
Release pressure slowly to make sure the clips are engaged before you remove the screwdriver completely.
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8. Hold the top sash with the exterior facing up and the metal cams away from you. Tilt the sash a little and align the metal pivots with the slots in the jamb liner closest to the exterior. Make sure the pivots are above the sash lifts. Tilt up the sash and press outward on the jamb liner while you snap the top of the sash into place between the jamb liners. Slide the sash down until the metal cams contact the sash lifts. Repeat the process on the lower sash.
Copyright ©2005 Home Service Publications, Inc.
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