- Windows and other glass surfaces must always be fully covered by sun protection or mirror films. A partial adhesion leads to thermal stresses in the glass and can result in glass fractures.
- Frosted glass films, decorative films and transparent films, however, can also be partially applied to glass surfaces.
- For sloped roof windows, thermal insulation, triple glazing and laminated safety glass (LSG), tinted and gas-filled panes, only a silver outer film shall be attached.
- If you install a film for external use, the outside temperature should not be less than 5° C.
Step 1: Required tools
- Adhesive tape (scotch tape) for loosening the protective layer
- Glass cleaner
- Assembly fluid (supplied free of charge)
- Squeegee (supplied free of charge)
- Cutter knife (supplied free of charge) - no need to cut to size at the window when you ordered a custom cut to size
- Glass scraper blade (supplied free of charge) - CAUTION: sharp blades!
- Paper towels or a clean lint-free cloth
- Spray bottle or empty glass cleaner bottle for filling in the mounting liquid diluted with water: Fill a spray bottle with water and mounting liquid in the following mixing ratio: 30 ml mounting liquid (≙ one bottle mounting liquid) to 3 l of water or 10 ml mounting liquid to 1 l of water (for smaller spray bottles).
Step 2: Preparation of the glass surface
Clean the window pane thoroughly and residue-free with a commercially available glass cleaner.
Subsequently, use a glass scraper on the moistened glass surface, as this can remove even the smallest particles such as dust. No dirt residues must remain on the window pane.
Caution: Glass scrapers have very sharp blades, which are secured for shipping with a paper strip. To avoid injuries, the paper strip must simply be carefully removed from the blade. Please handle the glass scraper with care and, like the cutter, do not allow the knife and mounting fluid to fall into the hands of children.
Step 3: Preparation of the window film
All window films are provided with a transparent protective film. The easiest way to remove it is to use two adhesive strips (scotch tape).
Glue the scotch tape to the front and back of one corner of the film. In case of small cuts in the film, simply pull both sides apart.
For larger films you need an assistant. Hold the film by the tape on the front, while your assistant removes the protective film using the tape on the back.
Important: You can prevent the film from sticking together and from creases and wrinkles by continuously spraying the adhesive side with mounting fluid when removing the transparent protective layer! This prevents the film from sticking together and avoids ugly creases and wrinkles.
Step 4: Assembly of the window film
- First spray the film and then the clean and dry window pane with the prepared mounting liquid mixture.
- Place the film in the middle of the window pane. If the film cannot be easily pushed back and forth, there is too little mounting fluid on the window pane. Spray again!
- Spray the backside of the film additionally, in order to ease the handling of the mounting squeegee.
- At this point, press the assembly liquid from the middle to the right and to the left evenly with the assembly squeegee towards the rubber seal until there is no more residual liquid under the film.
- Carefully use a soft cloth to dab the edges and back of the film. If necessary, gently press the edges again with the squeegee.
Step 5: Edge sealing of sun protection films for external use
If you have installed a reflective outer film, you must seal the film edges from the outside with vinegar-free (neutral cross-linking) silicone after drying.
Step 6: Cleaning the window film surface
Leave the film to dry for 3 days without touching it.
Wait a few weeks before first cleaning the applied film.
Never use hard or sharp-edged tools (e.g. brushes or blades) or microfiber cloths to clean your window film surfaces. A normal paper towel or cotton cloth is enough for proper cleaning.
You can clean your window films with standard household glass cleaners. However, it is important that the detergent does not contain any acidic materials that could attack the films.
A dismantling instruction for window films can be found here.