Tried this film for the first time today. Good instructions were very helpful. Applied the film to two sealed units which are to be fitted into a wooden Victorian door which I am building for my sons house. I was working with the glass units laying on the bench so I appreciated the help of my friend to hold one end of the film while I applied it to the glass. Otherwise I would have struggled. If you were fitting this to a vertical pane of glass then it would probable be easier. The final result Is better than I had thought it would be. The first piece had a few specs of dust caught under the film but I managed to lift the corner and with a quick spray of the soapy water, re-fix it. It all worked very well. I bought twice as much as I needed just in case but it worked first time so I now some spare.!