
Covering windows with plastic wrap or film is a popular method to insulate windows and reduce heating costs during the winter. It is a relatively inexpensive, easy, and temporary solution for drafty windows, helping to reduce condensation buildup and lower energy bills. However, it may not be suitable for all homes, especially those with newer windows that have minimal gaps. Additionally, plastic-covered windows can experience increased condensation during the summer, leading to potential issues with mold and mildew growth.
| Characteristics | Values |
|---|---|
| Cost | Relatively inexpensive |
| Effectiveness | Reduces drafts, condensation, and energy costs |
| Ease of Installation | Easy to install, but requires patience and precision |
| Durability | Not a long-term solution, may need to replace drafty windows eventually |
| Ventilation | Can impede airflow, leading to reduced ventilation |
| Maintenance | Requires regular inspection and maintenance to prevent mold and mildew |
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What You'll Learn

Plastic window film covers can reduce drafts
Plastic window film covers can effectively reduce drafts and make your home more comfortable during the colder months. This inexpensive solution can be easily installed as a temporary fix for drafty windows, reducing condensation buildup and lowering energy costs.
Plastic window film acts as an additional barrier, trapping warm, moist air between the plastic and the glass. This reduces airflow, preventing moisture-laden air from escaping and being replaced by drier air. While this can lead to increased condensation on the window glass, it effectively reduces drafts stemming from air leaks around the window frame.
For older homes with drafty windows, plastic window film offers a more affordable alternative to complete window replacement. By sealing air leaks, the plastic film can improve your home's energy efficiency and reduce the strain on your HVAC system, lowering the likelihood of unexpected breakdowns.
However, it is important to note that plastic window film is not a long-term solution. Drafty windows may eventually need to be replaced to address the root cause of the issue. Additionally, plastic film may not be necessary for newer windows with minimal gaps, as it may not provide a noticeable difference in drafts or energy efficiency.
To install plastic window film, you will need a few tools and a plastic window insulation kit, which can be purchased online or at a local hardware store. The process typically involves cleaning the window and frame, measuring and cutting the plastic film to size, applying double-sided tape to the frame, and affixing the film tightly to create a smooth surface.
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Plastic wrap can lower energy bills
While plastic wrap can be an affordable and easy solution for improving insulation, it may not be necessary for newer windows with minimal gaps. It is also important to ensure proper installation, as incorrect application can impact its effectiveness as an insulator.
Additionally, plastic wrap may not be a long-term solution, as drafty windows may eventually need to be replaced. Homeowners should also be aware that plastic wrap can impede airflow, potentially leading to moisture buildup and the growth of mold or mildew.
Overall, plastic wrap can be a temporary solution to improve energy efficiency and lower energy bills, especially for older homes with drafty windows. However, it may not be necessary for newer windows, and proper installation is crucial to ensure its effectiveness.
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Plastic can impede airflow
While plastic window film can be an effective way to reduce drafts and condensation buildup, it is important to consider the potential impact on airflow. Plastic acts as a barrier, which can help to seal air leaks around the window and reduce heat transfer. However, this same quality can also prevent proper ventilation, leading to a buildup of moisture and potentially creating an uncomfortable or unhealthy environment.
In some cases, the lack of airflow caused by plastic window coverings may not be a significant issue. For example, in colder months, the reduced airflow can help to keep the warm air inside, leading to lower heating costs and increased comfort. Additionally, if the windows are not the primary source of ventilation, the impact on airflow may be minimal.
However, in warmer months or climates, the reduced airflow can lead to a buildup of heat and humidity, making the space uncomfortable and potentially unhealthy. In these cases, it may be necessary to find alternative ways to improve energy efficiency and reduce heat transfer, such as proper window placement, energy-efficient replacement windows, or other insulation methods.
Overall, while plastic window film can be a relatively inexpensive and effective short-term solution for drafty windows, it is important to consider the potential impact on airflow and ventilation, especially in warmer months or climates. Homeowners should weigh the benefits of reduced drafts and energy costs against the potential drawbacks of reduced airflow and increased condensation before deciding whether to cover their windows with plastic.
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Plastic wrap may not be a long-term solution
In addition, plastic wrap can impede airflow, leading to reduced ventilation and potentially causing moisture buildup and condensation on windows. This can create an ideal environment for mold and mildew to thrive, especially during the summer months when temperature differences between the warm indoor air and colder outdoor air can exacerbate condensation.
While plastic wrap can be a temporary fix, it may not be aesthetically pleasing and may not suit the desired look for all homeowners. Furthermore, it is important to note that plastic wrap is not a permanent solution for drafty windows. Eventually, drafty windows and doors will need to be replaced to improve energy efficiency and reduce the strain on HVAC systems, which can break down unexpectedly due to constant overwork.
Therefore, while plastic wrap can offer short-term benefits, it may not be a sustainable or visually appealing long-term solution for improving insulation and reducing energy costs. Homeowners may need to consider more permanent solutions, such as investing in energy-efficient replacement windows or optimizing window placement to minimize solar heat gain.
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Plastic wrap is easy to install
- Clean the interior surface of the window with glass cleaner and a cloth.
- Measure the length and width of the window from the outside edge of one frame to the other.
- Cut out a piece of plastic film that is one to two inches wider and longer than the window.
- Apply double-sided tape to the interior surface of the window frame.
- Affix the film to the tape, keeping it as taut as possible.
If your window has blinds, you may need to cut a small hole in the film to feed the wand and cords through. You can also use a hair dryer as a heat source to shrink-wrap the plastic covering for a tighter fit.
While installing plastic wrap is relatively easy, it does require patience and attention to detail. If installed incorrectly, it will not insulate properly.
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Frequently asked questions
Yes, covering windows with plastic can help with heating costs. Plastic window film covers can reduce drafts, making your home warmer in the winter. It can also reduce condensation buildup and lower energy bills. According to Energy Star, sealing leaks in your house with plastic wrap can cut utility bills by up to 20%.
First, clean the interior surface of the window with a glass cleaner and a cloth. Then, measure the length and width of the window and cut out a segment of plastic film that is slightly larger than the window. Apply double-sided tape to the interior surface of the window frame and affix the film, keeping it as taut as possible.
While covering windows with plastic can be an inexpensive and effective short-term solution, it is not a long-term fix. If installed incorrectly, it will not insulate properly. Additionally, plastic coverings can impede airflow, leading to potential problems with mould and mildew growth.











































