1.) Measure and mark the panel to indicate the location of the cut.
2.) Cut the panel at a 45 degree angle. (It's helpful to use a simple panel cutting jig on a table saw.) NOTE: You can use a circular saw set to a 45 degree angle as well.
3.) Flip the Panel over 180 degrees, then make a 45 degree cut. The cut should be made just to cut into the back of the panel, creating a perfect V.
4.) Only a small triangle-shaped wedge of waste should be left over.
5.) Use the standard installation instructions to mount one of the cut panels, then glue and screw the panel in place.
6.) In cases where the next piece is butting into a wall, it will be necessary to measure it out and cut it straight.
7.) Making sure that the miter is good and tight, mount the other cut panel, then glue and screw it in.
8.) Some spots may overhang, exposing the yellow polyurethane.
9.) File those spots down to match the shape of the stone next to it.
10.) Use your touch-up paint to fix the filed area.
11.) Use the appropriate color-coordinated caulking to fill any gap or imperfection in the miter. If a touch-up kit is available for the FauxPanels® you are installing, you can also use the Paint from the Touch-up kit to conceal imperfections in the miter.
12.) Your corner is now in place!