Roof Ridge Board Joint

This video shows how to make roof rafters with a rafter square and or a speed squ.

Roof ridge board joint.

Ridge board the engineering principles of the ridge board are a bit more complicated. A ridge board or beam runs through the tops of rafters or trusses from end to end along a gable roof tying those framing members together. The rafters bear most of the weight of the roof. 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 must be set as perfectly as possible so take your time and use careful measurements. My crew and i call this technique penciling the ridges after the big pencil shaped piece of wood that results when the cuts are made. To extend the material to the correct length i splice ridge boards with a v shaped joint as shown in the drawing. Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12.

Note holes should not remove more than half of the sheathing section note. To ridge board roof sheathing ridge board ridge board joist or truss joist or truss roof sheathing vent holes on each side of ridge board. The ridge board and rafters are the strength of the roof. If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected.

Its only job is to provide a connection point for the roof joists on each side of the roof. The ridge is the peak where two sloped roof sections meet. Ridge boards shall be at least 1 inch nominal thickness and not less in depth than the cut end of the rafter irc section r802 3. To begin the cuts overlap the ridge material with the crowns pointing in the same direction.

Part of a roof s frame a ridge board runs horizontally along the peak of a sloped roof. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to.