Yes, bubble wrap is an effective and highly affordable DIY window insulator. The trapped air pockets in the plastic create a thermal barrier that slows down heat transfer. It can reduce heat loss through single-pane windows by up to 50%.
Basically, bubble foil products are 100% plastic and will degrade over time due to the intense heat coming off the metal on a building, and from the UV exposure from interior lighting or sunlight entering the building.
Adding bubble wrap or saran wrap to your windows does help insulate them, but not very well. And these fixes look sloppy, especially when they have to be done over each year, leaving adhesive marks or chipped paint. What bubble wrap can't do, is create dead air space between it and your window.
The cheapest way to insulate windows for winter is by using DIY plastic shrink film kits or leftover bubble wrap. These methods cost between $3 and $15 per window and effectively block drafts by creating a dead-air space between the room and the cold glass.
Interior Window Attachments
Some of Stewart's homes utilize interior blinds for light regulation and privacy. Others feature windows framed by exterior shutters, operable versions of which can also be used for light control, ventilation and privacy.
Shrink-wrap works on not-so-beat-up windows, and it doesn't require as much precision to install as caulk sometimes can. It works a bit like a temporary storm window, stopping leaks and creating an air pocket with an insulating effect.
Several household items can temporarily trap heat or block drafts. However, for permanent structural fixes, always opt for building-code-approved materials. Common temporary insulators include:
Keep cold drafts out of your home by sealing gaps around the frame and adding an extra layer of insulation. The most effective DIY fixes include applying weatherstripping to movable parts, using a shrink-wrap window insulation kit, sealing cracks with caulk, and hanging heavy thermal curtains.
How to winterize windows from the inside
Depending on your shipping and storage needs, honeycomb paper, air pillows, and shredded paper are superior alternatives to bubble wrap. They offer better space efficiency, eco-friendliness, or aesthetic appeal.
Putting bubble wrap on windows is an incredibly cheap and effective DIY hack used to insulate your home. The trapped air pockets inside the bubble wrap create a thermal barrier, which can reduce heat loss in the winter by up to 50% and help keep your home cooler in the summer.
While it may seem counterintuitive, Pierce said you're better off using bubble wrap with smaller bubbles. In the larger bubbles, the air moves some and loses some of its insulating properties, she said.
When balancing upfront cost and overall thermal efficiency, the cheapest and most effective standard insulation is fiberglass batt insulation. However, if you are looking for long-term savings through superior air sealing, dense-pack cellulose often provides the best overall value.
It's a sheet of plastic with air bubbles, not unlike what you might find in a package you got in the mail. The plastic is simply a waste of space, a filler. It has barely any thermal resistance (insulating value), and no conceivable purpose other than being something to stick the foil to.
Because spray foam can trap moisture, hide the condition of the roof, make it difficult for surveyors to inspect, which means risks like timber decay, dry rot, and not forgetting increased fire risk. If you've got it or you're buying a property that does, this is something you need to know upfront.
Here are five easy, affordable ways to insulate your windows and seal in the savings this winter:
Can I fix my windows myself?
Sleeping with windows open can introduce outdoor pollutants, allergens, and noise that disrupt rest. It also creates security vulnerabilities and allows pests inside. Furthermore, uncontrolled drafts can cause muscle stiffness and dry out your nasal passages.
Closed cell spray foam is rigid once set. It is a better thermal insulator and was previously sold to stabilise failing roofs. But if it has been used inappropriately or installed poorly, it might put stress on timbers, restrict air circulation and put them at risk of decaying.
The best DIY insulation is mineral wool (stone wool) or pre-cut rigid foam boards. Mineral wool handles easily, resists moisture, and won't burn. Rigid foam boards are perfect for DIYers upgrading walls or garages, offering the highest R-value per inch without requiring professional spray-foam equipment.
Mice are curious and always searching for safe, snug, and warm nesting sites. Attics filled with blown-in insulation provide an excellent option–from the mice's point of view. As long as there is a ready food source. Mice are omnivorous and will eat and chew on almost anything including wood and electrical wires.
Window Insulation Film
Window insulation kits are a more affordable way to insulate multiple windows. Using heat control window film doesn't interfere with the look of your windows. Leaving up to 1-inch space from the window frame border, apply adhesive tape to the entire window.
A sealant bead must be sized for movement, and shaped to flex without tearing. Common errors: Joints too deep (leading to 3-point adhesion) Joints too narrow (restricting movement)