A mirror PPF can be tricky to install as one piece, so we’ve made it DIY friendly by putting it in two pieces. You will start with the Piece A and align it to the outside edge of your mirror, tack it, then stretch it slightly over the middle of the piece to the opposite side and tack that edge. Last, all you have to do is squeegee all the slip out. Piece B has to be aligned or butt-seamed to the first piece. There won’t be any stretch on this piece. The first step is tacking the outside corner. Then you will then squeegee along the strip adjacent to Piece A and push the slip out towards Piece A while aligning the edges.