Minimum Slope For Cedar Shingle Roof

For every 12 horizontal feet the roof changes 8 feet in vertical height.

Minimum slope for cedar shingle roof.

Minimum slope for asphalt shingles. Minimum required slope x in 12 minimum required slope degrees asphalt shingles. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. As much as i love wood i no longer have to worry about maintaining a real cedar shake roof.

The minimum slope for lapped non soldered seam metal roofs with applied lap sealant shall be one half unit vertical in 12 units horizontal 4 percent slope. Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. According to this code the minimum slope for asphalt shingles is 17 degrees or two vertical units to twelve units in the horizontal.

The minimum recommended slope for standard installation of shingles is 3 12 and 4 12 for shakes. If your home features a low slope roof you can still install the cedar roof of your dreams. The same can also be the case when the tiled roof has a reduced exposure. Slate shingles can only be installed on roof slopes of 4 12 or greater 33 slope.

High and low pitch examples. A shingle roof like this north dallas garage in the photo above may have a failure no matter how good a job the installer did. That works out to about nine degrees if that works better for you. Minimum pitch for cedar roofs.

Asphalt shingles continue to be the most widely installed roof covering option in north america. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. 18 43 asphalt shingles with special underlayment requirements 2 in 12. The minimum requirement is 2 12.

Roofing material or system. This means for every 12 horizontal units the roof must rise a minimum of 4 vertical units. The requirements for an asphalt shingles roof are contained in the international building code. 9 46 built up roof asphalt.

On lower slopes shingles or shakes may be installed over a fully waterproof built up roof bur or membrane roof. An installer will apply the cedar shingles of a fully waterproof built up roof or layer. If you desire a cedar roof for your home the ideal pitch for your roof ranges from a five pitch to a 12 pitch. Slate shingles minimum roof slope roof pitch r905 6 2.

This minimum slope requirement can be found in the installation instructions for almost every manufacturer and. This roof gives me confidence. Wood shingles minimum roof slope roof pitch r905 7 2. In 12 0 25 in 12 1 19 built up roof coal tar pitch.

Wood shingles are more susceptible to leaks than composite or asphalt shingles because they don t lock as tightly or lay as flat as traditional shingles. Shingles of all types need to have a slope to function properly. Depending on the roof profile there are minimum roof slope requirements. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Slope and exposure tables for wood shake shingle roofs click to enlarge any image as discussed in best roofing practices recommended exposures for shakes and shingles on roofs are shown in tables 2 13 and 2 14.