Insulating Windows: Plastic Film, Big Savings

how to insulate a window with plastic

Plastic window insulation is an easy, effective, and inexpensive way to insulate your windows. It can be a great DIY project for those who prefer simpler home improvement tasks. Plastic window insulation kits are available at home improvement, hardware, and discount stores and can save energy on both heating and cooling, lowering utility bills. The plastic film comes in window-sized pieces in the kits, and you can purchase a kit that fits the width of your window. The process involves cleaning the window and frame, applying double-sided tape to the window casing, and spreading out the plastic sheet to attach it to the tape. The plastic can then be shrunk with a blow dryer to achieve a tight fit.

Characteristics Values
Cost $17
Effectiveness Reduces drafts, keeps the house warmer, reduces moisture buildup, eliminates air leaks, lowers utility bills
Ease of installation Easy, simple, DIY project
Tools and materials Window film cover, double-sided tape, blow dryer
Pre-installation steps Clean the window and frame, adjust blinds, allow the window and frame to dry, prepare the tape
Installation steps Apply tape to the window casing, attach the plastic sheet, use a blow dryer to shrink the plastic
Post-installation steps Cut out the center of the plastic sheet with a utility blade if necessary, reposition and reheat the plastic to remove wrinkles
Additional considerations Metal frames require more preparation, the plastic may prevent the opening and closing of mini-blinds, multiple layers of plastic or the addition of bubble wrap can improve insulation

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Using a plastic window insulation kit

Plastic window insulation kits are an easy, effective, and inexpensive way to prevent drafts and reduce heat loss through windows. Kits are available in several sizes at home improvement, hardware, and discount stores. The plastic film comes in window-sized pieces in the kits; purchase a kit that fits the width of your window.

To install a plastic window insulation kit, you will need a pair of scissors and a hair dryer. First, clean the framing of your window with a damp cloth or rubbing alcohol. Then, apply one layer of double-sided tape to the window frame, followed by a second layer of double-sided tape next to the first layer. Let the double-sided tape sit for 10-15 minutes to allow it to become tacky and set up properly.

Next, peel off the backing on the first layer of tape and apply the plastic film, ensuring there is at least one inch of excess film on all sides of the tape. Adhere the plastic film to the tape, starting at the top, then the bottom, and finishing with the left and right sides. Use a hair dryer to shrink the film into place and remove any wrinkles.

Finally, cut around the perimeter of the window to trim off any excess film. With this simple DIY project, you can keep your home cozy during the winter while also saving on heating bills!

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Locating air leaks

One way to locate air leaks is to use a candle or incense stick. Move the candle or stick along the window frame, if the smoke or flame flickers, you've likely found a leak. Alternatively, you can use an infrared thermometer to scan the window. Air leaks will show up as a different temperature from the rest of the window. You can also try using a spray bottle filled with soapy water and spraying it around the window. If there are any leaks, the soapy water will bubble.

Another method is to use a blower door test. This involves sealing off your home, except for one door, and using a special fan to blow air into the house. The air will escape through any leaks, which can then be located and sealed.

Once you've located the air leaks, you can use plastic film to insulate the windows and prevent heat loss. This can be done by applying plastic film to the window using double-sided tape. The plastic film should be positioned about an inch away from the window pane to achieve the best insulation. You can then use a hairdryer to heat the plastic and shrink it for a tight fit. This will help to reduce drafts and keep your home warmer during the winter months.

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Installing an interior window insulating panel

Prepare the Window:

Before you begin, it's important to prepare the window for the installation. Clean the window and frame thoroughly, removing any dust, debris, or loose paint. Ensure that the window is closed and locked. If you have blinds, clean and adjust them as well. Allow the window and frame to dry completely before proceeding.

Measure and Cut the Plastic Sheet:

Measure the size of your window frame and cut a plastic sheet to fit. The plastic sheet should be positioned about an inch away from the window pane for optimal insulation. You can use window insulation film, plastic wrap, or a thicker plastic sheet, depending on your preference and the availability of materials.

Apply Tape to the Window Frame:

Use double-sided tape and apply it to the window frame. Place the tape on the front of the molding, the sill, and just inside any ridges on the molding to keep it straight and protected. Overlap the tape at the corners to reinforce the adhesion. Make sure you have enough tape to secure the plastic sheet all around the window frame.

Attach the Plastic Sheet:

Unfold the plastic sheet and attach it to the tape, starting from the top edge and working your way down. Smooth out any wrinkles as you go, ensuring a tight fit. If you are using a thicker plastic sheet, you may need to screw in handholds on one side to secure it in place, as mentioned in the previous paragraph.

Heat the Plastic (for Plastic Wrap):

If you are using plastic wrap, use a hairdryer to apply heat to the plastic. This will cause the plastic to shrink, removing any remaining wrinkles and creating a tighter seal. Be careful not to overheat the plastic, and keep the hairdryer moving constantly.

Test and Adjust:

Once the plastic is in place, test the window to ensure it opens and closes properly. If you have blinds, follow the steps mentioned earlier to operate them even with the plastic covering. You can also cut out a section of the plastic to access the wand hook and pull cords.

Your interior window insulating panel is now complete! This simple and inexpensive project will help keep your home warmer during the winter, reduce condensation, and lower your energy bills. Remember to remove the plastic and tape during warmer months when they are no longer needed.

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Using window film to cover mini-blinds

Window film covers are a great way to insulate your windows. They are inexpensive, reduce drafts, help the house feel warmer during winter, and reduce moisture buildup on the window due to condensation. They can also eliminate air leaks around the window if they extend over the woodwork, and this extra layer of plastic adds another layer of insulating air to reduce heat loss through the windows.

If you are covering mini-blinds, you will need to remove the rotating wand from the blinds before you apply the shrink film. To do this, lift the retaining ring (if there is one) and lift the wand off the hook. Apply the window film and shrink it in place. Apply four strips of cellophane tape to the window film surrounding the wand hook, overlapping each strip at the corners so they reinforce each other. Cut out the centre of the square with a new utility blade, then install the wand and pull out the lift cords.

When applying window film, it is most efficient to insulate all the windows you want to cover at once. First, remove debris from around the lower sash, close the window, lock it, clean the window and frame, and clean and adjust the blinds. Allow the window and frame to dry.

Next, unfold the first 12 inches of film along the entire width of the window. Apply the tape to the frame. Put it just inside a ridge on the moulding, if the style has one, to keep it straight and protected by the moulding edge. Cut an end in the proper place with scissors before laying it down. When you finish one piece, rub down the corner and peel the backing paper about an inch to overlap it with the next piece. Be careful not to touch the sticky side or the frame area with your fingers because this creates a layer of grease which reduces adhesion.

Finally, stick the top edge of the film to the tape, centring the film side-to-side so there is a little excess on each side. If the bundle of film is dusty, put the dusty surfaces on the outside, towards the room, so they can be cleaned off. To do this, present the window insulation film to the top of the frame as you unfold it so that the clean inside surfaces that emerge as you begin to unfold face the window.

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Preparing the window

Before you start applying the plastic film to your window, you'll want to make sure the window is clean and dry. Use a vacuum to remove any light dust, and scrub off any excess paint or rust with a plastic brush if your window has a metal frame.

If you have blinds, you'll need to remove the rotating wand before applying the film. To do this, lift the retaining ring and lift the wand off the hook.

Next, apply double-sided tape to the window casing, along the perimeter of the inside of the window. If you have metal frames, apply the tape to the front of the moulding and on the sill right in front of the vertical mouldings. If your window has a ridge on the moulding, put the tape just inside it to keep it straight and protected by the moulding edge.

Overlap each piece of tape with the next by about an inch (a few centimetres) to ensure the plastic film sticks properly. Be careful not to touch the sticky side of the tape with your fingers, as this will create a layer of grease and reduce adhesion.

Now you're ready to apply the plastic film.

Frequently asked questions

To insulate a window with plastic, you will need a window insulation kit, which typically includes plastic sheeting and double-sided tape. First, clean your window thoroughly to ensure the film adheres properly. Then, cut your plastic sheeting to size, leaving a bit of extra space around the edges. Apply the adhesive tape to the window frame, lay the plastic sheet flat, and press the plastic sheet onto the taped frame, ensuring there are no gaps.

Yes, applying plastic over your window means that it will be sealed shut for the rest of the season. This also means that you won't be able to open and close your mini-blinds.

Yes, there are several alternatives to plastic insulation. You can use caulk, a common material for insulating windows, by applying it between the window frame and siding. You can also use weather stripping to seal windows, or draft stoppers to cover small gaps on window sills and frames. Thermal curtains are another option, which are designed to keep cold air out and can add beauty to your windows.

Plastic window insulation is an inexpensive, do-it-yourself option to reduce drafts and make your home feel warmer during winter. It can also reduce moisture buildup on the window due to condensation and help with energy savings.

Plastic window insulation is only a temporary solution, intended to last for one season. It may not be aesthetically pleasing, as it can make it difficult to see outside. Additionally, while it reduces drafts, it is not a good barrier against heat transfer, so you may still feel a chill.

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