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Installing Weatherstripping-Weatherproofing 5

To weatherstrip a door, first install the threshold. Measure the distance from the floor to the bottom edge of the door; thresholds come in a number of heights-typically 5/8′, 1′ and 1-1/2′. Choose a threshold that allows about a 1/2′ gap to leave room for the vinyl bulb.

The threshold should be placed so its highest point (or the center of the vinyl bulb, if the threshold has a built-in bulb) is directly under the door. Measure the width of the opening and cut the threshold to length with a hacksaw (aluminum thresholds) or a fine-toothed handsaw (wood thresholds). The threshold will probably have to be notched on each end so it fits around the door stops.

Set the threshold in place and close the door to check the fit and position. Once the threshold is in place, mark the location on the floor, then open the door. Run a thin bead of caulking along the underside of the threshold on each side. Aluminum thresholds have a C-shaped channel along the edges to accept caulking. Set the threshold in place and screw it firmly to the floor.

To apply compression weatherstripping to a door or swinging (casement) window, first close the door or window. If the door has a deadbolt, lock it. Cut each strip to length with a hacksaw or tin snips and stand it in place. Push the strip in toward the door or window sash so the bulb is partially compressed. Don’t fit it too tightly or the door/window won’t close properly. Nail the strip in place, starting from the center and working your way toward both ends. Check the door/window frequently to make sure it operates easily.

To apply foam weatherstripping, cut the foam strips to length with scissors. Peel back about 1′ of the adhesive cover strip and press the foam into place at the top of the door/window stop. Work your way down, peeling the cover strip away as you press the foam into place.

To apply V-type weatherstripping to a door or swinging (casement) window, cut the strips to length with scissors (vinyl) or hacksaw (bronze). Place each strip on the jamb with the raised ‘V’ facing away from the door or window sash, positioned so the door/window sash will be centered on the strip when closed. Fasten the strips in place.

To apply V-type weatherstripping to a double-hung window, first lower the sash. Cut the strip to length and slip it down along the side of the sash with the raised ‘V’ facing outside. Position the strip in the center of the sash and fasten it in place as far as possible. Raise the sash and repeat the process along the lower half of the strip.

Tool and Material Checklist

Weatherstripping Tin Snips
Hacksaw Measuring Tape
Pencil Hammer
Screwdriver Scissors
Caulking Caulking Gun
Utility Knife Utility Blades
Paint/
Lacquer Thinner
Rags
Wire Brush