Removing Adhesive Backed Film
Adhesive backed films can be a little more complicated to remove. You may need to dissolve the adhesive first. A vinegar or ammonia based solution will dissolve the adhesive. We do carry adhesive removal products for tough residues, or to speed up removal.
Before applying the solvent, you should try peeling it at the corner and pulling it off diagonally, as you would with a static cling. You will most likely need to use a razor blade to get it started. Be careful not to scratch the glass.
After removing as much film as you can, spray the remaining film using your chosen solution. You may want to cover any surrounding surfaces with a drop cloth or sheet before spraying, to avoid any damage from the solvent. Allow time for the solvent to sit and soak into the film and break down the adhesive. This may take an hour or longer. Let it soak overnight for best results.
Once it has had some time to sit, spray the film with the solution again and try to peel it from the window. It should be a lot easier to remove. Use your razor blade as needed. For more serious removals, you may need what’s called a Triumph 6″ wide scraper and some stainless steel Triumph blades. (On a side note, this tool is also great for scraping off and cleaning a glass stove surface. Bonus!)
Once you have removed all the film, spay down the window with your solution again to remove any residue. You can carefully use the razor blade to scrape away any stubborn spots. Finally, wipe down the glass a final time to be sure your window is clean and free of any trace residue.