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How to Weatherstrip Your Windows

Updated March 11, 2021

Brian G.

By Brian G.

Getting ready for winter weather? Weatherstripping your windows is easy, and it can cut energy costs by sealing air leaks.

Note

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

Note

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

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.

There are a couple of easy ways to determine where you'll need weatherstripping. Start by inspecting the windows or doors. Look for places where you can see light shining through. You can also use the smoke from an incense stick or candle, watching its direction to see if there's air movement.

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-channel

(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
  • Felt
  • All-Wool Felt

  • Around a door or window sash
  • In the door’s jamb
Inexpensive
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.

Instructions

Weatherstripping Casement Windows

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

Instructions

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