Ridge Runs Into A Higher Roof

Rob haddock a metal roof consultant and director of the metal roof advisory group responds.

Ridge runs into a higher roof.

The ridge board and rafters are the strength of the roof. This option might be the updated system which most newer homes use but if you have an older home then you might need the soffit vents too. Roof ridge vents provide a costly system of ventilation that may not be suitable for the checkbooks of some homeowners. Getting a little more technical the national roofing contractors association defines the ridge as the highest point on a roof represented by a horizontal line where two roof areas intersect running the length of the area.

To scribe the angle we placed a length of stock on top of the rafter peaks and leveled it across using a scrap block to trace the angle. The ridge board must be set as perfectly as possible so take your time and use careful measurements. Determining the height of the ridge board sets the stage for cutting the angles on the rafters and setting them at them correct height for the pitch of the roof. The initial cost of roof ridge vents is usually higher.

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. A 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run. The arrow always faces towards the higher side of the roof if you draw one rectangle and draw two slope arrows that join their arrow tips in the middle of the rectangle you create a roof that is sloping towrds the tails of the arrows you drew with the point at wich the arrow tips meet becoming your ridge or if you select the line which defines the side toward which the roof slopes on the property dialog box you will see a choice that says defines a slope and lower down the angle or the. Rafters are nailed to the ridge board and run down to overhang the exterior wall.

First we need to step off the distance to the theoretical center point where the hip meets the ridge. In simple language the ridge of a roof is the peak where two opposing roof planes meet. In most cases that connection is achieved with manufactured load rated hardware. In ridge beam roof construction the connection of the rafters to the ridge must handle the entire gravity load on the rafters.

The culture of fastening through the ridge crest or through the valley of the metal roof profile seems to vary in the continental u s. However the irc does allow a prescriptive wood to wood connection of the rafters to the ridge for slopes of 3 12 and greater.