Roof Ridge Board Joint

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.

Roof ridge board joint.

The ridge board must be set as perfectly as possible so take your time and use careful measurements. To extend the material to the correct length i splice ridge boards with a v shaped joint as shown in the drawing. The rafters bear most of the weight 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. 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. Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters. Its only job is to provide a connection point for the roof joists on each side of the roof.

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. To begin the cuts overlap the ridge material with the crowns pointing in the same direction. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to. The ridge board holds them in place.

The ridge board and rafters are the strength of the roof. Note holes should not remove more than half of the sheathing section note. This video shows how to make roof rafters with a rafter square and or a speed squ. Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12.

Ridge board the engineering principles of the ridge board are a bit more complicated. 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.