Windows
Bubble Wrap for Window Insulation: Does It Really Work?
Bubble wrap might seem like an odd choice for winter window insulation, but many have sworn by its effectiveness. Whether you’re trying to keep the cold out or simply want a cost-effective solution, bubble wrap could be a frugal alternative. But does it actually work as an insulation hack? Here’s a breakdown of its pros and cons based on expert and user experiences.
How Does Bubble Wrap Work as Insulation?
The concept is simple: cut bubble wrap to fit your window and attach it with the bubble side facing the glass. Some people use water to make it stick, while others secure it with tape. The large bubbles and air pockets in bubble wrap help to create an insulating barrier. This process essentially traps air, which slows heat transfer between the indoors and outdoors.
Bubble wrap not only insulates but also adds a layer of privacy by obscuring the view through the glass. The soft lighting it creates can also make the room feel cozy. However, the downside is that it blocks visibility through your window, which might not be ideal if you enjoy a clear view.
Will Bubble Wrap Work as Insulation?
In theory, bubble wrap does work as an insulation material. The air pockets in the bubbles provide a layer of thermal resistance. According to sources like How To Go Solar, bubble wrap can improve window efficiency by 50% or more on single-glazed windows and up to 20% on double-glazed windows. Build It Solar also reported positive results.
However, Randy Huckstadt, an HVAC expert, cautions that the lack of an airtight seal means that the bubble wrap won’t provide total insulation. If air or temperature seeps through the window, it will still affect the area around the bubble wrap. He also warns that using water to stick the bubble wrap to the window might crack glass during freezing weather, especially on single-pane windows.
Despite these concerns, many users report success. In Korea, this method is commonly used and known as “air cap.” The Institute for Basic Science in Korea even recommends it for winter insulation, advising people to moisten the glass before applying bubble wrap.
User Experiences
Many Reddit users confirm that bubble wrap insulation works, especially for single-pane windows. One user noted, “We do this on some of our windows every year. They are single-pane. It definitely helps. You can feel the difference once they’re up.” Another person mentioned it makes a significant difference in their home’s warmth, especially during the colder months.
Alternatives to Bubble Wrap for Window Insulation
While bubble wrap can be a quick, affordable solution, there are other options that might offer more permanent or efficient insulation:
- Window Insulation Kits
- These kits usually come with plastic film that can be applied over windows to provide insulation. Some kits have an R-value rating, which measures their effectiveness.
- Check for Leaks
- Before applying any insulation, make sure your windows are properly sealed. Check the weather stripping and caulk around your windows to ensure there are no gaps for cold air to enter.
- Interior Storm Windows
- A more expensive but permanent solution, interior storm windows offer additional layers of insulation and are designed to last for decades.
Conclusion
While bubble wrap isn’t a perfect solution, it can help reduce heat loss in winter, especially if you have single-glazed or inefficient windows. It’s an inexpensive, quick fix that can make a noticeable difference, particularly in reducing drafts and keeping rooms warmer. However, it’s not a long-term, airtight solution, and it might not work well in extremely cold conditions.
If you’re looking for a more reliable and permanent solution, consider using an insulation kit or investing in storm windows. Regardless of your choice, remember that a proper seal around your window is key to improving energy efficiency.
