Do Plastic Window Coverings Really Help?

As temperatures drop, many homeowners find themselves shivering indoors. Drafty windows can turn a cozy living room into an icebox and cause your HVAC system to work overtime. To avoid this problem, many folks choose to seal off their windows with plastic film. But is this really the best way to insulate your home, and how effective are plastic window coverings in the first place? Learn more about temporary window insulation and how you can keep cold air out.

What Does Plastic Over Windows Mean?

Applying plastic over windows refers to the use of a window insulation kit. These kits typically include a roll of shrink-wrap plastic film and a roll of double-sided adhesive tape. The installation process is relatively straightforward. You apply the double-sided tape around the window frame, press the plastic sheet onto the tape to create a seal, and then use a standard hair dryer to heat the film. The heat causes the plastic to shrink, pulling it tight across the window. This creates a drum-like surface that sits a few inches away from the actual glass pane.

What Does Plastic Over Windows Do?

Using window plastic insulation does help retain heat in your home. When you seal the plastic film tightly over the window frame, you trap a layer of air between the plastic and the glass. This trapped air acts as a buffer zone, preventing the cold air radiating from the glass from entering your home. Simultaneously, it stops the warm air generated by your heating system from escaping outside.

Limitations and Drawbacks of Plastic Window Covers

Plastic film is a good temporary fix for winter window insulation, but it does have several limitations and drawbacks. First, they can seriously hurt your home’s curb appeal. Even when applied perfectly, window films rarely look good. It can appear cloudy, wrinkle over time, and obscure your view of the outdoors. Beyond that, plastic covers can trap moisture. If condensation forms between the glass and the plastic, you can’t easily wipe it away. Over time, this trapped moisture can cause mold growth or rot the wooden parts of your window sill. Perhaps most frustrating of all, plastic window covers are tedious to install. If the seal breaks or the tape fails, the insulating effect is immediately gone.

Benefits of Using Plastic Window Coverings

Despite the drawbacks, window films remain popular for a few reasons:

  • Price—You can usually purchase a window insulation kit to cover multiple windows for less than twenty dollars. For folks on a strict budget, this makes winterizing a home much more accessible.
  • Renter Friendly—Most tenants can’t legally make permanent changes to their apartments. Plastic film allows renters to stay warm and reduce their utility bills without violating their lease agreements or waiting for a landlord to address drafty windows.

Better Long-Term Alternatives to Plastic Window Covers

While plastic film is a quick fix, you’re better off investing in long-term solutions. Depending on your needs, you may want to consider the following options:

  • Weatherstripping and Caulking—Air leaks around the moving parts of your windows can often be solved with simple weatherstripping. Applying fresh silicone or foam strips ensures a tight seal when the window is closed. For stationary joints, a fresh bead of caulk will help block outside air.
  • Cellular Shades—Also known as honeycomb shades, these window treatments feature pockets that trap air. They offer excellent insulation properties like plastic film, but they look beautiful and can be raised or lowered whenever you want to see outside.
  • Professional Window Replacement—The most effective way to eliminate drafts and lower energy bills is to replace old, failing windows. Modern energy-efficient windows feature double or triple-pane glass, argon gas fills, and advanced low-E coatings. If your current windows are rotting, difficult to open, or constantly drafty, checking out our window replacement services is the smartest move you can make for your home.

How Much More Expensive Is a Window Upgrade?

Window upgrades and proper installation might seem much more expensive at first, but be sure to consider both short- and long-term value. Plastic window kits are cheap upfront. Spending $20 a year makes sense if you need an immediate solution. However, over five to ten years, you’re continually buying kits, spending hours installing them, and dealing with potential paint damage and mold issues.

Upgrading to new energy-efficient windows requires a larger initial investment. However, this upgrade immediately lowers your monthly heating and cooling bills. It also significantly boosts your home’s resale value, improves curb appeal, and provides year-round comfort without any annual installation chores.

Need a Pro Recommendation? Reach Out to Rosati Windows

You deserve a permanent solution to drafty windows. Instead of resigning yourself to a temporary fix, talk to the team at Rosati Windows about upgrading. Our Columbus, OH professionals, will listen to your needs and recommend a solution that fits within your budget. Contact us to learn more about our window products and services.