How plastic window wrap works. Plastic window wraps reduce heat loss by adding another layer of insulation. Window wraps are clear plastic sheets that stop cold air from entering through unseen gaps in your window framework. You can purchase a kit at just about any local hardware or home improvement store.
When you're dealing with old, drafty windows, you essentially have two options: replace them or seal them with insulating window film—a.k.a. plastic wrap. This kit by 3M—a leader in consumer products—insulates up to five windows, and the company claims it lowers heating costs and saves energy.
The idea here is to apply Saran Wrap over the entire window, including the frame. By overlapping the strips, you create a continuous surface of the plastic. In theory, this plastic prevents icy breezes and moisture from getting into your home. It also won't damage your windows.
To winterize your windows in plastic, you need to place a heavy plastic sheet over your windows, taping it tightly to the walls or sill, and use heat to tighten the plastic to a smooth finish. The end result is a window without gaps or drafts, which still allows sunlight to enter and warm the room.
The best way to winterize your windows is to add a sealed layer of plastic or glass over the window. And the cheapest, easiest way to do this is by installing an interior window insulation kit. Keep out those winter winds by sealing up your drafty windows.
Is plastic wrap a good insulator? No, plastic wrap does not have very many qualities that make it an excellent insulator. It may slightly assist in heat retention, but aluminum foil is a better insulator. Two layers of plastic wrap with air in between are the best way to use plastic wrap as an insulator if necessary.
The air kept between the window and plastic is a kind of air insulator that provides extra insulation on your window and keep your home warmer during the winter. Plastic for windows will decrease the draft, which makes sitting next to the window relaxing and cozy again.
Using Plastic Window Film
The film, which looks similar to cling film, is applied on the inside of the window. Putting the film on the outside would only expose it to weathering elements, so by putting it inside, it's better protected.
Plastic window film covers can reduce drafts and make your home feel warmer during the winter. They are also a relatively inexpensive way to reduce condensation buildup and lower energy bills. Window wraps can also seal air leaks around the window, when those leaks extend over woodwork.
An insulating window film applied over a window can help the window retain up to 55 percent more heat in winter, potentially reducing your heating costs up to 30 percent. These films are less effective at reducing summer heat gain, though.
As regards to its insulation properties, cardboard is actually a great insulator as it has poor thermal conductivity. The definition of conductivity is actually the property of a material to transmit energy.
Aluminum has an emissivity of around 0.04. That means it radiates very little heat away from its surface, which is one reason why radiators aren't made from aluminum! Aluminum foil can be an effective insulating material because it doesn't radiate heat out into the environment.
Because clingfilm is a good insulator, this charge persists for quite a while. When you wrap the clingfilm around itself or another insulator (like glass) the electrostatic charge induces an opposite charge in the other surface and the two stick together.
Make Your Single-Pane Windows More Efficient
Hang heavy-duty curtains to contain drafts. When the sun beams down in the home, draw the curtains to keep the room in shade. Check your windows periodically for deteriorating caulk both inside and outside the home. Scrape away old deteriorating caulk and install new caulk.
Window caulking is easy and cheap and should be the first line of defense against winter drafts. Caulk around the exterior perimeter of leaky windows. Also, seal the crack between the interior trim and the wall with caulk, as this is where air leaking around the window frame will most likely enter the house.
Good curtains stop cold air from entering your home by creating an air gap between the room and the window. Ideally, they also prevent any flow of hot and cold air which would create a draft.