Weather Stripping a Window

Choosing Your Weather Stripping

Spring-type, tension or folded strips made from bronze, aluminum, stainless steel or vinyl are sometimes nailed in place to the sides and top of the window frame and to the sash on the bottom. The angled or V-shaped strips work best for double-hung windows and are also suitable for doors. This type is durable and cannot be seen when door or window is closed but may make opening and closing difficult and installation is somewhat tricky.

Rigid strip gaskets are made from vinyl, felt or foam attached to wood or metal strips. Attached at the bottom or top of window sash or bottom of doors with fasteners the strip is visible but can be painted to reduce visibility. It is easily installed and the durability varies with material used. Pliable gasket is made of a springy material like vinyl, foam, felt or sponge with an adhesive backing and is effective for wood casement, hinged or sliding windows. Installs easily in the channels and bottom or top of sash. This type is low cost but the durability is generally low and self-adhesive strips may not work on metal and should be considered temporary.

Compressible felt strips are another option but are not very durable and are best used only on warped windows that won't accept rigid stripping, or for windows that aren't often opened.

Double-Hung Windows


  • Utility Knife
  • Tape Measure
  • Hammer

Clean the bottom of the sash with soap and water and let dry.

Measure the sash and cut the foam weather stripping to length.

Peel the back from the foam. Press the adhesive side of the foam against the bottom of the sash to form a tight bond.

Clean the jamb with soap and water and let dry.

Cut two pieces of V-channel 1" longer than each sash height.

Peel the back from the V-channel and work it between the sash stiles and the jamb. Press the channel firmly into the jamb.

Drive finish nails through the weather stripping into the jamb to hold it securely. Test the sash to ensure it doesn't catch on the nails.

Clean the back of the bottom sash with soapy water and allow it to dry completely.

Cut a piece of V-channel to match the width of the sash.

With the sash raised 3" to 4", peel the back from the channel and press it firmly into the back of the sash even with the top. The V should open facing up so the weather stripping compresses when the window is closed.

Casement Windows


  • Utility Knife
  • Tape Measure
  • Hammer


  • Self-adhesive foam insulation

Open the window and clean the outside of the stops with soapy water. Allow the stops to dry completely.

Cut self-adhesive foam to fit the top, bottom and sides of the stops.

Remove the back from each piece of foam and press it into the outside of the stops.

Credit:  Lou Manfredini's Tips From the Tool Box, Ace Hardware

Check your state and local codes before starting any project. Follow all safety precautions. Every effort has been made to ensure the accuracy and safety of this information. Neither Westlake nor any contributor can be held responsible for damages or injuries resulting from the use of the information in this document.

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