How to Frame a Rolling Shed Door

Measure from the floor to the ceiling on the left side of the door opening with a tape measure. Cut a piece of 2-by-6-inch salt-treated wood to the measurement with a circular saw. Measure the right side in the same manner, cutting a piece of 2-by-10-inch board. The extra width on the right side is for adding a side-mount operator.

Put the end of the tape measure on the floor against the left side jamb and measure to the right side jamb. The rough opening is usually the same size as the door. Measure off 1-inch toward the center of the opening on each side. Make marks on the floor at the 1-inch measurement. For example, a 10-foot 2-inch door has a rough opening the same size. Measure 1-inch inward on each side to have a 10-foot opening.

Place the 2-by-6-inch board against the left side of the opening, with the outside edge of the board at the mark on the concrete floor. Drive a 16d nail through the bottom of the board and into the bottom sill of the wall, using a hammer.

Position a level against the side of the board and move the top end left or right until the board is level. Drive a 16d nail through the board and into the rim board at the top of the shed. Secure the board to the framing of the opening with 16d nails. Repeat the process for the right side jamb board.

Measure between the jamb boards at the top of the opening with the tape measure. Cut a piece of 2-by-10-inch board to the measurement. Place the board over the top of the opening in between the jamb boards and nail it into place with 16d nails.

Drive two 3-inch wood lags through each jamb board near the top of the opening, using a socket adapter and drill. The wood lags help create a more secure grip where the side brackets for the rolling door installs.

Install 1-by-4-inch boards on the outside of the rough opening with finishing nails. These serve as trim boards for the opening and fit flush to the edges of your jamb boards.