Lowe's Home Improvement

Weather Strip Your Windows

weatherstripping Image

Weather stripping your windows is easy and it can cut energy costs. Getting ready for winter weather? Sealing air leaks in your windows is a good way to prepare your home for winter. Winterizing your home not only keeps out drafts, it can lower your heating bill.

Tools & Materials

Use this checklist when you go to the store and purchase your items.

Weatherize Your Home

Weather stripping can help seal air leaks in areas of your home, such as doors, windows and attic access points. If you decide to take on an entire home sealing project, identify all the air leaks in your home, including those in unseen holes or pathways in your plumbing, wiring and HVAC system.

Weather stripping windows is easy. However, there are different ways of weather stripping double-hung and casement windows. Follow the appropriate instructions for your window type. 

Weather Stripping Double-Hung Windows

Double-hung windows require both self-adhesive foam insulation and V-channel weather stripping. Follow the instructions below to weather strip double-hung windows.


Step 1

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

Step 2

Cut the foam weather stripping to length.

Step 3

Peel the back from the foam. Press the adhesive side of the foam against the

bottom of the sash to form a tight bond.

Step 4

Clean the jamb with soap and water. Allow it to dry completely.

Step 5

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

Step 6

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

Step 7

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.

Step 8

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

Step 9

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

Step 10

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.

Weather Stripping Casement Windows

V-strip image

Casement windows only require self-adhesive foam insulation. Follow the instructions below to weather strip casement windows.

Step 1

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

Step 2

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

Step 3

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