Roof Ridge Board Definition

Part of a roof s frame a ridge board runs horizontally along the peak of a sloped roof.

Roof ridge board definition.

The loads on the ridge beam are carried by vertical posts at the beam ends down through the building structural walls to the building foundation. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to. 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. It resembles real wood and particularly strong and stable for bearing heavy load.

This type of framing is a specially designed rafter layout and requires precise and experienced erection. A composite decking made of solid materials. 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 board must be set as perfectly as possible so take your time and use careful measurements.

In traditional house framing also called stick framing a basic roof frame consists of opposing pairs of sloping rafters that meet at their top ends at a ridge board or ridge beam. Ridge boards can only be used in roofs with slopes from 3 in 12 up to 12 in 12. The top board at the peak of a roof. The rafters terminate against the ridge board unless the framing is designed to bear rafter against rafter with no ridge board.

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. Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters. Moulding that covers the edge of the roof and reduces the risk of water infiltration. 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.

While not required by the code it is recommended by roofers and manufacturers. Ridge boards and beams. The ridge is the horizontal peak of the roof. 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.

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. The ridge is the peak where two sloped roof sections meet. Size and type of roof rake boards. The ridge board and rafters are the strength of the roof.

It is attached directly to the decking along the bottom of the roof slope and above the underlay on the sides 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.