How to install window film

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How to install window film

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Project Overview

Installing window film is a great way to improve privacy in your home without cutting out any natural light. It doesn’t cost much to do, but it can be a little fiddly unless you know what you’re doing. This video shows you all the tricks you need to know to get the best results with the least amount of fuss. Continue to step-by-step instructions

Step by Step Instructions

1 Clean the Window
2 Wet the glass with a light spray of water and baby shampoo
3 Measure and trim the film to size
4 Put the window film onto the window
5 Remove the backing from window film as you go
6 Remove the air bubbles from the window film
7 Give the window film a final trim
  • Step 1. Clean the Window

    Clean the window thoroughly with an ammonia-based window cleaner and wipe it dry using a squeegee. Make sure that all of the window cleaner is wiped off, as it will dissolve the adhesive on the window film.
  • Step 2. Wet the glass with a light spray of water and baby shampoo

    Fill a spray bottle with water and add a couple of drops of baby shampoo. Spray the mixture onto the window. This mixture helps the film stick to the window but still lets you slide the film around so you can fit it properly into the corners before the mixture dries.
  • Step 3. Measure and trim the film to size

    Measure the window to see how large an area you need to cover, allowing at least two centimetres overlap for all four sides. Roll the window film out onto a flat horizontal surface and trim to size. Before you put the film on the window, start peeling the backing off the sticky side of the film. Use masking tape on both sides of one corner to get the peeling started.
  • Step 4. Put the window film onto the window

    Once you’ve peeled off the top five to ten centimetres of backing, move the film up to the surface of the window. Start by putting the top two corners in place. Once the film is sitting in a good position you can slowly start to take the rest of the backing off.
  • Step 5. Remove the backing from window film as you go

    Slowly peel the backing off in stages. Use a squeegee to flatten the film out onto the window as you go. Start the squeegee in the centre of the window and push out to the edges. As you work down the window, use the spray bottle to keep the surface as moist as possible. It will give you a much smoother finish.
  • Step 6. Remove the air bubbles from the window film

    Once the squeegee has got the larger bubbles out, use the small plastic scraper to remove any smaller bubbles. You can work out any small pockets of water at the same time. Whatever small amounts of moisture are left will work with the adhesive on the film to create a bond to the window.
  • Step 7. Give the window film a final trim

    When all the bubbles are out, take a sharp blade and give the film a final trim at the edges of the window. Once you’ve trimmed the edges, give the film one final scrape with the small plastic scraper. Tuck the corners in as hard as you can, squeegeeing towards the outside, working out the last remnants of water.

Tools and Materials

Tools

  • Ruler
  • Small plastic scraper
  • Spray bottle
  • Squeegee
  • Tape measure
  • Trimming knife

Materials

  • Baby shampoo
  • Fresh water
  • Lint free cloth or towel
  • Masking tape
  • Window cleaner
  • Window film
  • Window washer cloth
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