Roof Systems For 2 12 Slope Roof

The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Roof systems for 2 12 slope roof.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. For roofs that will experience heavy snow or wind and will span the same distance use 2 6 rafters. Pitch is the term used to describe the angle slope or slant of your roof. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

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. Roof pitch degree table. These roofs have a pitch less than 4 12. So a roof with four inches of rise every 12 inches horizontally run would have a slope of 4 12 sometimes displayed as 4 12.

Simply put it s a shallow roof. The most common slopes are. For roofs that won t experience heavy snow loads a gable roof can span up to 22 with 2 4 rafters. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

The list below contains the common roof slopes and the terms which classify them. You can use either 2 6 or 2 4 rafters for roofs with a 3 12 pitch or greater but it depends on the overall size of your shed. Roof pitch designations are comprised of two numbers indicating a ratio. 21 12 and higher.

If this isn t practical then perform the same measurement on the underside of the roof. Image 1 12 to 12 12 roof pitch 7 12 pitch. Or the colon can replace the slash as in 2 12 or 7 12. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.

Asphalt shingles continue to be the most widely installed roof covering option in north america. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Roof pitch defined and explained. They have a pitch ranging from 4 12 to 9 12.

3 12 1 2 12 and 1 4 12. Conventional roofs are the easiest to construct and you can walk on them safely. Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span.