Does plastic on windows really help?
Matthew Perez
Updated on April 08, 2026
Does plastic on windows really help?
Savings in Energy and Money Leaks around windows can lead to uncomfortable drafts and energy losses. They can also eliminate air leaks around the window if they extend over the woodwork, and this extra layer of plastic adds another layer of insulating air to reduce heat loss through the window.
Does insulating windows with plastic work?
Despite the controversy following any DIY homeowner solution, both window companies and repair gurus consider insulation film to be effective. It really works, and it can increase a window’s insulation for many months. Additionally, insulation film lets in sunlight—which can further warm a window.
Does putting plastic on windows help in summer?
An insulating window film applied over a window can help the window retain up to 55 percent more heat in winter, potentially reducing your heating costs up to 30 percent. These films are less effective at reducing summer heat gain, though.
What kind of plastic do you put over windows?
Bubble wrap is plastic film with air filled pockets. You’ll want to add the bubble wrap to your window before using the window insulation kit. Open the window insulation kit and take out the double sided tape. Clean the framing of your window with a damp cloth or rubbing alcohol.
What kind of plastic can be used for windows?
Best Types Of Plastic For Windows
- Acrylic Plastic Sheet. Acrylic is a popular choice for windshields, drive up windows and similar applications.
- Polycarbonate Sheet. Polycarbonate is another popular material for windows.
- Specialty Acrylic and Polycarbonate Sheet for Specialty Windows.
How can I Weatherproof my windows?
Here are eight simple ways to draft-proof your windows and doors this fall:
- Use Weatherstripping.
- Install New Sweeps.
- Use Foam Tape.
- Apply Rigid Foam Insulation And Foil Stripping.
- Apply Window Film.
- Hang Insulated Curtains.
- Use A Door Snake.
- Re-Caulk Your Windows & Doors.
What can I use to shrink wrap my windows?
One popular DIY solution is shrink wrapping your windows with plastic. You can purchase these kits at your local hardware stores, and there are plenty of ‘how-to’ videos online to show you where to begin. Plastic wrap is a great solution to save money when you have drafty windows.
Why is window plastic called ” window shrink “?
That’s where window plastic gets its other name, window shrink. It’s because it shrinks to the window when heat is applied creating a tight bond between itself and the surface of your window.
When do you need to use window shrink?
Most people think that window plastic is only needed during the winter months, but you don’t want your home to be sweltering in the summer. You’ll need to put up window shrink year round which is where the cost starts kicking in. Have you ever tried to put a screen protector on a phone or tablet?
What kind of plastic to put on window?
What’s Window Plastic? You’ll need to first know what window plastic is. It’s a plastic shrink wrap that’s applied over the surface of your window. You secure it onto the sides then use a heat lamp or hot blow drier to adhere it onto the window. That’s where window plastic gets its other name, window shrink.
How to shrink window film to fit window frame?
The kit includes 62 x 210 inches of crystal clear plastic film, plus 1/2-inch x 84 feet (1080 inches) of mounting tape, enough to insulate up to five 3-foot x 5-foot windows. Simply use the tape to affix the film to the window frame, then use a conventional hair dryer (not included) to shrink the film into an airtight lining over the window.
That’s where window plastic gets its other name, window shrink. It’s because it shrinks to the window when heat is applied creating a tight bond between itself and the surface of your window.
One popular DIY solution is shrink wrapping your windows with plastic. You can purchase these kits at your local hardware stores, and there are plenty of ‘how-to’ videos online to show you where to begin. Plastic wrap is a great solution to save money when you have drafty windows.
What’s the best way to shrink window insulation?
Normally, window insulation kits offer double-sided tape to help the homeowner adhere the plastic. Once secured, the plastic is “shrunk” to fit and adhere to a window. To shrink window insulation film, one need only hit it with a hair dryer or similar heat source.