2 12 Roof Pitch Shed Roof

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

2 12 roof pitch shed roof.

Asphalt shingles continue to be the most widely installed roof covering option in north america. Simply put it s a shallow roof. There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.

Roof pitch defined and explained. Remember this advice applies only to shed roofs that have a pitch greater than 3 12. Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run. Or the colon can replace the slash as in 2 12 or 7 12.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. In roofing it is expressed in inches of vertical rise over inches of horizontal run. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. As stated in the. Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. This means that for every 12 inches of horizontal distance across the shed the roof will rise 4 inches. If you do opt to use 2 4 shed rafters for your roof construction you will always use a 2 6 ridge beam even though the rafters will be 2 4. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important.

To make the bottom cut i laid out a level cut for a 4 in 12 pitch. This slope works well for sheds that are fairly narrow like 4 to 6 feet but for sheds that are 8 or wider the shed roof becomes unsightly high. Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square. To let the jacks sit plumb on top of the sleepers we angled the level cuts to the 3 1 2 in 12 pitch of the shed roof setting the circular saw to a 16 degree bevel the degree equivalent of a 3 1 2 in 12 pitch.

Roof pitch designations are comprised of two numbers indicating a ratio. If you have a roof with a pitch that is less than 3 12 you should not use 2x4s. A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.