Roofing Material For A 2 12 Slope

Clay tile is a very long lasting roofing material that can last more than a century.

Roofing material for a 2 12 slope.

Standing seam roof systems must have a minimum roof slope of 1 4 12 2 slope. One issue that has stumped the roofer is a low slope area of 2 12. We are having a home constructed and desire to use metal roofing with shingles as the preferred product. At slopes lower than 2 12 on residential structures the primary roofing options are built up roofing bur often called tar and gravel modified bitumen and epdm see table 2 17 above.

Metal roofing costs about three times as much as asphalt shingles but it lasts from 50 to 70 years so metal is the less expensive option in the long run metal roofing comes in panels shingles and tiles and in a variety of durable finishes. Modified bitumen roofing minimum roof slope roof pitch r905 11 1. The list below contains the common roof slopes and the terms which classify them. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

This means for every 12 horizontal units the roof must rise a minimum of one quarter vertical unit. Pitch is the term used to describe the angle slope or slant of your roof. Modified bitumen membrane roofs must have a design roof slope of 1 4 12 or greater 2 slope. In addition a handful of proprietary single ply roofing membranes designed for easy application to small jobs have entered the market and offer a few new choices.

Or the colon can replace the slash as in 2 12 or 7 12. Low pitched roofs aren t able to shed water and snow as easily. Can metal roofing be used on a low slope pitch roof. The metal shingle manufacturer will only guarantee to a 3 12 slope but will verbally state it should work with no problem.

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. It s the go to material in snow country. This is particularly important to pay attention to when using metal roofing products such as standing seam metal which have a multitude of profiles attachment methods and seam lap joint styles which can affect the recommended slope. Roof pitch designations are comprised of two numbers indicating a ratio.

If roofing material is installed on a roof with a slope that is less than what is specified by the manufacturer it will void the warranty. The traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run. That means the roofing material you choose needs to protect the materials underneath to prevent water damage and leaks.