Roof Systems For 2 12 Slope Roof

Roof pitch designations are comprised of two numbers indicating a ratio.

Roof systems for 2 12 slope roof.

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. Asphalt shingles continue to be the most widely installed roof covering option in north america. These roofs have a pitch less than 4 12. For roofs that will experience heavy snow or wind and will span the same distance use 2 6 rafters.

Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Or the colon can replace the slash as in 2 12 or 7 12. The list below contains the common roof slopes and the terms which classify them. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. 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. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. They have a pitch ranging from 4 12 to 9 12. 3 12 1 2 12 and 1 4 12.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. 21 12 and higher. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. If this isn t practical then perform the same measurement on the underside of the roof.

Roof pitch defined and explained. For roofs that won t experience heavy snow loads a gable roof can span up to 22 with 2 4 rafters. 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. 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.

Simply put it s a shallow roof. The most common slopes are. We included a roof pitch chart below the 7 12 example image and the calculator below that.