Determine the height placement on the wall for chair rails or caps, if you're using them. Once you've determined this measurement, use a level and 2 pencil to trace a line around the room as a guide for installation. # Begin from any corner in the room and nail in place. All IP Refinished Molding can be balled without the need for per-drilling. If you have one available, a power nail gun, set at 95 PSI or less, can speed up your project.