Sofia Martinez
Installing plastic insulation on windows is a quick, inexpensive, and easy way to prevent drafts and reduce heating bills. The process involves cleaning the window frame, applying double-sided tape around the edges, and then attaching the plastic film to the tape. The film is then shrunk using a hair dryer to ensure it is completely adhered and to remove any wrinkles. This guide will take you through the steps to effectively install plastic insulation on your windows.
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What You'll Learn
Clean the window and frame
To install plastic insulation on your windows, the first step is to clean the window and frame thoroughly. This is an important step, as any dirt or dust left on the window will be trapped under the plastic film, ruining the aesthetic of your window. Moreover, a clean surface will allow the plastic insulation to adhere better to the window and frame.
First, use a vacuum to remove any light dust or debris from the window and frame. If there is more stubborn dirt or debris, use a dry microfiber cloth to wipe down the window and frame. Pay particular attention to the window casing, as this is where the film will adhere. You may also need to clean the blinds; this can be done with a vacuum for light dust, or a cloth for more stubborn dirt. Ensure that the window and frame are completely dry before proceeding.
If there is any grease on the window frame, use a rag and a solvent such as methylated spirits, white spirit, or rubbing alcohol to clean it off. For metal frames, use a plastic brush to scrub off any excess paint or rust. It is important that metal frames are smooth before proceeding.
Finally, be sure to clean off any moisture on the window or frame. You can use gentle heat from a space heater to evaporate any remaining moisture. Ensure that any humidifiers are turned off, and that you have not boiled anything with hot water for a few hours before installing the plastic insulation.
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Measure the window
Measuring your window is a crucial step in the process of installing plastic insulation. Here is a comprehensive guide to help you through the process:
Identify the Type of Window
Before you begin measuring, it's important to identify the type of window you have. Common types include vintage sashes, double-hung windows, and out-of-square or sagging windows. Understanding the type of window you have will help you determine the appropriate measuring technique.
Measure the Width
To measure the width of your window, hold a tape measure at the edge of the sash where it meets the outermost glass pane. If you have a single-light sash configuration, place the tape measure at the profile edge of the sash that meets the outside edge. For multi-light configurations, drag the tape measure across all glass panes simultaneously. Record the measurement at the opposite side of the sash.
For standard windows, measure the width from the inside jamb on the left and right sides of the window in three places: the bottom, middle, and top. Exclude any trim from this measurement. Place the tape measure horizontally between the inside jambs and record the measurement.
Measure the Height
To measure the height, determine the "'daylight' height" by measuring from the sash where the glass meets the wood. For double-hung windows, repeat this process for both the top and bottom sashes as they may have different dimensions.
For standard windows, measure the height from the sill to the inside of the trim at the top of the window. Again, take measurements at the left, center, and right sides of the window.
Take Additional Measurements
If you have out-of-square or sagging windows, you'll need to take the largest measurement from the daylight dimensions to ensure the insulation fits properly.
Additionally, for standard windows, measure diagonally from the top right corner to the lower left corner, and then from the upper left corner to the lower right corner. If these measurements are within 1/4 inch of each other, standard window insulation kits should fit securely.
Consider Window Depth
While depth is typically not an issue, it's important to ensure your window opening is not too narrow. Measure the jamb depth to be at least 3 1/4 inches, especially if you live in a modular or mobile home.
Allow for Film Shrinking
When using window insulation film, remember to add an extra 2 inches to your final width and height dimensions to account for film shrinking. This will ensure a tight fit after installation.
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Cut the film
When cutting the film, it is important to measure your window first. Add an extra two inches to your window's dimensions to allow for the film to shrink. Then, cut the film to size. Starting with the top of the window, press the film firmly onto the tape. Work down the window, attaching the film by peeling off the tape backing paper and sticking the film to the tape. Keep the sides slightly taut and even, and push in on the film to make sure it sticks to the full width of the tape across the sill, including the corners.
After shrinking the film into place with a hairdryer, you can cut around the perimeter of the window to trim off any excess film. Cut off any excess film with scissors, ensuring there is a tight fit between the window and the film.
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Attach the film
To attach the film, first, unfold about 12 inches (30.5 cm) of film along the entire width of the window. Work down the window, attaching the film as you go. Unroll about six inches at a time from the bundle of film, peel the tape backing paper off, and stick the film to the tape. Keep the sides slightly taut and even, but don't worry too much about wrinkles as you can remove them later with heat.
If you have very tall windows, you may need to leave narrow margins or extend the film to reach the full length. You can splice sheets with double-sided tape or extend them with wide clear mailing tape. These fixes are more easily hidden at the top of the window after attaching the film from the bottom up.
When you reach the bottom of the window, peel off the last few inches and the bottom tape while holding the film away from the tape with the other hand. Attach the bottom of the film by pushing in on it to make sure it sticks to the full width of the tape across the sill, including the corners.
Once you’ve applied the film, use a hair dryer to apply high heat around the taped edges to ensure the film is completely adhered. This will also help to shrink the film and remove any wrinkles.
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Seal the film
Sealing the film is a crucial step in installing plastic insulation on windows, ensuring a tight fit and effective insulation. Here is a detailed guide on how to seal the plastic insulation film:
Prepare the Window and Film
Before sealing the film, it is essential to prepare the window and the insulation film. Start by cleaning the window frame and glass to remove any dust, grease, or moisture. Use a vacuum or a dry microfiber cloth for dust, and for grease, use a residue-free solvent like methylated spirits or rubbing alcohol. Ensure the window is completely dry. If you have metal frames, remove any loose paint or rust with a plastic brush.
Next, open the box of window insulation film carefully with your fingers to avoid damaging the film. If the film is dusty, position it so that the dusty side faces outward toward the room, making it easier to clean.
Apply Tape and Film
Now, apply double-sided tape around the outside edge of the window. If your window is very tall, you may need to splice sheets of film together using the tape. Unfold the top part of the film (about 12 inches) along the entire width of the window. Then, starting at the top, press the film firmly onto the tape, working your way down.
As you work, keep the film slightly taut and even from side to side. Don't worry about wrinkles at this stage, as they will be removed later. Peel off the tape backing paper as you go, ensuring the film adheres to the tape.
Once the film is in place, use a hairdryer to apply high heat around the taped edges. This step ensures the film is completely sealed and adhered to the tape. The heat will also help shrink the film, removing any wrinkles in the process.
After shrinking the film, use a pair of scissors to cut off any excess film around the perimeter of the window. Check that the film is tightly fitted to the window, with no gaps or lifted edges.
Additional Tips
- If you have cats, consider using thicker plastic film, as cats may scratch and damage the standard film.
- To improve insulation further, consider using silicone caulk to seal any cracks or edges around window frames, sills, doors, and baseboards.
- For the bottom of the window, you can use a "door snake," a long bean bag that blocks drafts.
By following these steps, you can effectively seal the plastic insulation film on your windows, creating a comfortable and energy-efficient indoor space.
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Frequently asked questions
First, measure all the windows to determine how much plastic film you'll need. Then, clean the windows and window frames to remove any dust or debris. If your window frames are metal, make sure they are smooth and free of any loose paint or rust.
You will need a window insulation kit, which typically includes plastic film and double-sided tape. You will also need a hair dryer, scissors, tape measure, and a clean cloth or rag.
Start by applying double-sided tape around the outside edge of the window. Then, unfold the plastic film and attach it to the tape, working from the top of the window down. Use a hair dryer to heat the edges and shrink the film, ensuring it is completely adhered.
Once the film is in place, cut off any excess with scissors. Check that the film is tightly sealed to the window frame. If needed, use silicone caulk to seal any remaining cracks or edges around the window frame.
