Framing A 2 12 Pitch Roof

Wondering how to build the structure of your roof.

Framing a 2 12 pitch roof.

Roof pitch degree table. A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options. Roof pitch calculator results explained. Blind valleys simplify framing.

Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12. Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. We will go over raft. We included a roof pitch chart below the 7 12 example image and the calculator below that.

So if the pitch of your roof is 7 12 place one stair gauge on the vertical part of the framing square the tongue at the 7 inches 18 cm mark and place one stair gauge on the horizontal part of the framing square the body at the 12 inches 30 cm mark. A framing square is traditionally used for laying out the roof and determining pitch. This video covers one of the most exciting parts of roof framing installing rafters. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. Pitch is the amount of angle or slope the roof has. The minimum roof pitch is 1 8 inch rise per foot of span. Image 1 12 to 12 12 roof pitch 7 12 pitch.

Asphalt or composite shingles need at least a 2 12 pitch steel roofing needs a 3 12 pitch or higher and rolled roofing needs a 2 12 pitch or more. The best pitch for shingles is between 4 12 and 12 12. Fix stair gauges on the framing square to mark the pitch. But for a 2x12 rafter on a roof with a steeper 12 12 pitch the seat cut can be no longer than 4 inches before the d 4 limitation is exceeded.

To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.