Ridge Board Roof Construction

Position a ridge board down in the saddles of the supports.

Ridge board roof construction. Cut to the ridge board to the length of the shed dimension b and mark it 24 inch on center. The ridge board runs the length of the building and provides support for the tops of the rafters helping the whole roof structure work together as a system. The ridge board and rafters are the strength of the roof. Create a saddle at the top with the braces the height of the building walls plus rise less the width of the ridge board.

The rafters terminate against the ridge board unless the framing is designed to bear rafter against rafter with no ridge board. Line it up with the top of the truss and nail in place. The ridge board must be set as perfectly as possible so take your time and use careful measurements. The engineering principles of the ridge board are a bit more complicated.

This type of framing is a specially designed rafter layout and requires precise and experienced erection. Definition of ridge board in construction the top board at the peak of a roof. Its only job is to provide a connection point for the roof joists on each side of the roof. Rip the ridge board to the correct width to meet the rafter widths at the ridge.