Roof Ridge Width

The gibraltar ridge cap is made from sturdy 29 gauge galvalume steel.

Roof ridge width.

Metal sales universal ridge 14 in x 122 in steel roof panel ridge caps. The finished ridge beam height z above the top of the wall will be m plus the y height. Ondura 12 5 in x 39 5 in cellulose fiber asphalt roof panel ridge caps. The ridge board s length will be the outside measurement of the building plus the length of the overhang at both ends.

Choose a ridge board that is one size larger than your common rafters. 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. For 2 x 4 rafters use a 2 x 6 ridge board. If you know the slope x in 12 you want to use for your roof framing design you can use it along with the run r to determine the height of the ridge beam for example if the slope is 4 in 12 and the run is 12 feet the ridge beam height m will be 4 feet.

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. How do i determine the size of ridge and rafters i need to build a gable roof on a 16x24 foot small cottage. The ridge cap used in conjunction with closure strips reliably protects the ridge seam against water infiltration. Galvalume uses an alloy of 45 zinc 55 aluminum to create an extra durable coating that is ideal for ridge capping a galvalume panel roof.

Determining the ridge beam height. For 2 x 6 rafters use a 2 x 8 ridge board and so on.