Roof Ridge Board Definition

The ridge board and rafters are the strength of the roof.

Roof ridge board definition.

The rafters terminate against the ridge board unless the framing is designed to bear rafter against rafter with no ridge board. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to. 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. It is attached directly to the decking along the bottom of the roof slope and above the underlay on the sides of the roof.

Size and type of roof rake boards. 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. The ridge is the horizontal peak of the roof.

The rafters and trusses that are part of the overall roof structure are connected along the body of the ridge board helping to create a durable framework that protects the rooms of the structure underneath. The ridge is the peak where two sloped roof sections meet. The rafters and trusses are connected to the ridge board for a cohesive framework. Specifically the ridge board is a section of solid timber or metal that is positioned horizontally along the line of the ridge of the roof.

Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12. The rake board covers the top edge of the siding where it meets the roof or soffit if there is an overhang on the gable end and prevents rain from running behind it. The top end of each rafter is cut at an angle so that it meets flush with one broadside of the ridge board and the ridge is sandwiched between the rafters. It resembles real wood and particularly strong and stable for bearing heavy load.

While not required by the code it is recommended by roofers and manufacturers. This type of framing is a specially designed rafter layout and requires precise and experienced erection. Ridge boards and beams. A structural ridge beam is a horizontal beam placed at the peak or ridge of a roof and is designed to carry much of the live and dead loads or weight of the roof structure by itself.

Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters. The top board at the peak of a roof. Rake boards are installed on the gable ends of brick houses to cover the exposed top edge of the brick. A composite decking made of solid materials.

Moulding that covers the edge of the roof and reduces the risk of water infiltration. Definition of ridge board in construction.