
Shrink-wrapping windows is an easy, effective, and inexpensive way to save on heating fuel. It can be a quick fix for uncomfortable leaks and drafts, adding another layer of insulation to reduce heat loss. When installed properly, it can save a noticeable amount of money on utility bills. For example, one user reported that their heating bill dropped from $400 to $150 after shrink-wrapping their windows. Another user estimated savings of $100 on heating costs. However, shrink-wrapping is not a long-term solution, and eventually, drafty doors and windows will need to be replaced.
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What You'll Learn

The cost of shrink-wrapping windows
The materials required for shrink-wrapping windows include double-sided adhesive, a box cutter or scissors, and a blow dryer or hair dryer. These materials can be purchased as part of a window insulator kit from brands like 3M and Frost King, which can be found at local hardware stores or online.
The process of shrink-wrapping windows involves applying double-sided adhesive around the window frame, cutting the shrink wrap to size, attaching it to the adhesive, and using a blow dryer to remove any wrinkles. It is important to note that the plastic shrink wrap should not be touched with the blow dryer to avoid melting the plastic.
While shrink-wrapping windows can be a relatively inexpensive way to reduce heating costs and improve comfort, it may not be aesthetically pleasing to some. Additionally, it is not a long-term solution, and eventually, drafty doors and windows will need to be replaced.
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Effectiveness of window shrink-wrap
Window shrink-wrap is an effective way to reduce heating costs, particularly for single-pane windows. It acts as a "second pane", providing an additional layer of insulation that helps to retain heat and reduce drafts. This, in turn, can reduce the strain on your HVAC system, making it less likely to break down.
The effectiveness of window shrink-wrap is evident in the improved comfort levels it provides for occupants. Rooms with shrink-wrapped windows are noticeably warmer, and the indoor relative humidity can be maintained at a higher level without causing water pooling or condensation issues. This is especially beneficial in colder climates, as demonstrated by users in Minnesota, Alaska, and Ottawa, who have attested to the noticeable difference it makes in their homes.
The installation process for window shrink-wrap is relatively simple and can be completed within a few hours. It typically involves applying double-sided adhesive around the window, attaching the shrink wrap, and then using a blow dryer to remove any wrinkles. When installed properly, the shrink wrap is virtually invisible and can even be left up year-round on windows that remain closed.
While window shrink-wrap is an effective short-term solution, it is important to note that it is not a long-term fix for drafty windows and doors. Eventually, these will need to be replaced to address the underlying issue of air leaks. In the meantime, window shrink-wrap can provide a quick, inexpensive, and noticeable improvement in comfort and heating costs.
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Installation process
While shrink-wrapping windows can help save on heating costs, it is not a long-term solution. Eventually, you will need to replace drafty doors and windows.
To install shrink wrap on your windows, you can purchase a kit from a local hardware or home improvement store. These kits usually come with double-sided adhesive and shrink wrap. You will also need a blow dryer, a box cutter, and about ten minutes of your time.
- Apply double-sided adhesive on all sides of the window.
- Cut the shrink wrap to the desired size, leaving an inch or two on all sides.
- Start putting the shrink wrap on the adhesive, beginning at the top and working your way down. Ensure that the shrink wrap is pulled taut. It may be easier to have someone assist you with this step.
- Use a hair dryer to blow hot air about an inch or two away from the shrink wrap. Continue until all the wrinkles are gone. Be careful not to get too close to the shrink wrap with the hair dryer, as you could melt the plastic.
Alternatively, you can use thick plastic trash bags and duct tape to cover your windows. Cross all four edges with duct tape to ensure a good seal.
It is important to note that shrink-wrapping your windows may not be aesthetically pleasing, and it can be difficult to remove the tape in the spring. Additionally, you will lose natural lighting and the heat from the sun coming in through the windows.
While shrink-wrapping can provide a quick fix for drafts and leaks, it is not a substitute for properly sealed and insulated windows in the long term.
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Alternative methods
While shrink-wrapping windows can be an effective method to save on heating fuel, there are several alternative methods that can help achieve the same goal.
One simple method is to use thick curtains made from blanket material. This can add insulation and reduce heat loss through windows. Similarly, keeping curtains, blinds, or shades closed at night helps retain heat within the house. In contrast, during the day, keeping these window coverings open can allow sunlight to enter and naturally warm the house.
Weatherproofing is another effective method to conserve heat energy. This involves sealing gaps and cracks around windows and doors with caulk or weatherstripping, adding insulation to walls, roofs, and attics, and using draft stoppers under doors. This prevents warm air from escaping and cold air from entering.
Upgrading to energy-saving appliances can also significantly reduce heating fuel consumption. This includes using a smart thermostat, energy-efficient light bulbs, and front-loading washing machines. Additionally, ensuring that appliances are well-maintained and serviced regularly can improve their efficiency and reduce energy wastage.
For a more permanent solution, underfloor heating can be considered. This provides even heat distribution and reduces the risk of energy wastage. Combining this with smart controls allows for remote adjustments and scheduling, further optimizing energy usage.
Finally, simple behavioural changes can also contribute to reducing heating fuel consumption. This includes setting the thermostat to a lower temperature, wearing warmer clothing, and turning off non-essential appliances when not in use.
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Longevity of window shrink-wrap
While window shrink-wrap can be an effective way to save on heating fuel, it is not a long-term solution. It is a temporary measure that can be used until a more permanent covering is installed. The longevity of window shrink-wrap depends on several factors, including the quality of the installation, the material used, and exposure to the elements.
Shrink-wrap can last anywhere from 6 months to 2 years, but it will eventually degrade over time due to exposure to wind, rain, and other weather conditions. Strong winds, for instance, can cause wrinkles, air pockets, or weak seals, which can lead to premature failure. Large areas covered in shrink-wrap are also more susceptible to damage. Therefore, it is important to ensure proper application to get the best performance from window shrink-wrap.
To extend the lifespan of window shrink-wrap, it is recommended to use specialised equipment, such as a shrink gun with a regulator and hose, and to have trained operatives perform the installation. Applying the shrink-wrap in winds exceeding 20 mph should be avoided, as it can affect the evenness of the application. Additionally, choosing durable materials such as polyethylene (PE) or polypropylene (PP) can provide better protection and durability under stress for temporary applications.
While window shrink-wrap can provide a quick fix for uncomfortable leaks and drafts, it is not a substitute for well-sealed, energy-efficient windows. For a more permanent solution, consider investing in double or triple-pane windows, which offer better insulation and can help reduce heating costs in the long run.
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Frequently asked questions
When installed properly, plastic window wraps can save a noticeable amount on utility bills by reducing heat loss and adding another layer of insulation. One user reported that their heating bill dropped from $400 to $150 after shrink-wrapping their windows. Another user estimates savings of at least $100.
Leaks around windows can lead to uncomfortable drafts and energy losses. If you feel cold in a room with windows and doors despite running your heat, plastic wraps may be a quick, easy, and inexpensive solution. To test your windows for leaks, try the following: Paper test: Shut the window over a sheet of paper. If you can easily move the paper back and forth, outdoor air is likely entering your home. Smoke test: Light a stick of incense and hold it near the sash or seams of the window. See if the smoke is forced or sucked in a particular direction. If it fails to rise naturally, you likely have a leak.
Window insulator kits are available at local hardware or home improvement stores and come with double-sided adhesive and shrink wrap. All you need is a blow dryer, box cutter, and ten minutes. Apply double-sided adhesive on all sides of the window. Cut the shrink wrap to the desired size leaving an inch or two on all sides. Put the shrink wrap on the adhesive starting at the top and working your way down, pulling the shrink wrap as taut as you can. Take a hair dryer and blow dry about an inch or two away from the shrink wrap until all the wrinkles are gone.











































