Ridge Board Roof Construction

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.

Ridge board roof construction.

Brace these supports in the centerline of the building. The rafters terminate against the ridge board unless the framing is designed to bear rafter against rafter with no ridge board. Remove the spacers in both end wall trusses and put the ridge board in between the 2 gable ends. The ridge board must be set as perfectly as possible so take your time and use careful measurements.

Rip the ridge board to the correct width to meet the rafter widths at the ridge. The engineering principles of the ridge board are a bit more complicated. Because the ridge board is a smaller member typically only an inch thick sometimes even less it is not a structural member and doesn t carry the gravity load. This type of framing is a specially designed rafter layout and requires precise and experienced erection.

Create a saddle at the top with the braces the height of the building walls plus rise less the width of the ridge board. Definition of ridge board in construction the top board at the peak of a roof. Position a ridge board down in the saddles of the supports. The ridge board and rafters are the strength of the roof.