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Weather Strip Your Windows

Weatherstripping 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.

Weatherstrip Windows

Tools & Materials

Product costs, availability and item numbers may vary online or by market.

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Weatherize Your Home

Weatherstripping 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.

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

How to Choose Weatherstripping

To choose the best type of weatherstrip for your window or door, make sure that it will withstand the temperature changes, friction, weather and wear and tear associated with the location. See the table below to learn about the different types of weatherstripping.


Type Materials Where to use
Pros Cons


(V- strip/ Tension Seal)

  • Vinyl
  • Aluminum
  • Stainless steel
  • Sides of a double-hung or sliding window 
  • Top and sides of a door


  • Durable
  • Invisible once in place

  • Could increase resistance in opening/closing doors or windows
  • Felt
  • All-Wool Felt

  • Around a door or window sash
  • In the door’s jamb
Easy to install

  • Inexpensive
  • Easy to install

  • Only lasts 1-2 years
  • Low durability
  • Should not be used where exposed to moisture, friction or abrasion
  • Visible
Foam Tape
  • Foam
  • Vinyl/Foam
  • Rubber Foam
  • PVC Foam

  • Top and bottom of window sash
  • Door frames
  • Attic hatches and inoperable windows


  • Inexpensive 
  • Easy to install


  • Should be used where little wear is expected
  • Visible
Door Sweep
  • Aluminum or stainless steel with brush of plastic, vinyl, sponge or felt
  • Bottom of the interior side of a door
  • Easy to install
  • Might drag on carpet

Weatherstripping Double-Hung Windows

Double-hung windows require both foam tape and V-channel, sometimes known as V-strip or tension seal weatherstripping. Follow the instructions below to weatherstrip double-hung windows.


Step 1

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

Step 2

Cut the foam weatherstripping to length.

Step 3

Weatherstripping Double-Hung Windows

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 inch 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 weatherstripping 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 inches to 4 inches, 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 weatherstripping compresses when the window is closed.

Weatherstripping Casement Windows

Casement windows only require foam tape. Follow the instructions below to weatherstrip casement windows.


Step 1

Weather Stripping Casement Windows

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

Step 2

Cut foam tape 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.