Make a level mark around the room. Although you can use a long level to place the marks, you can rent a laser level to make the job easier. The laser level is attached to the first piece of wall molding and produces a laser "guide" for installing the remaining molding.
- Mark a level line on the wall at the height you plan to hang the ceiling.
- Measure the length of the wall and cut wall molding to length with tin snips.
- Fasten the molding to the wall using fence staples placed approximately 16 inches apart.
- Hang the laser level on the wall molding, make the necessary adjustments so the laser is aligned with the wall molding, and attach the rest of the moldings on the wall based on the laser beam reference.
* Caution: Don't look directly into the laser light.
* For inside corners, you can butt the ends of the molding against one another. For outside corners, cut a 45-degree miter angle.