Minimum Slope For Cedar Shingle Roof

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Minimum slope for cedar shingle roof. This means for every 12 horizontal units the roof must rise a minimum of 4 vertical units. High and low pitch examples. The same can also be the case when the tiled roof has a reduced exposure. Minimum slope for asphalt shingles.

Roofing material or system. Wood shingles minimum roof slope roof pitch r905 7 2. The minimum recommended slope for standard installation of shingles is 3 12 and 4 12 for shakes. 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.

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. Slate shingles minimum roof slope roof pitch r905 6 2. 9 46 built up roof asphalt. Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.

Minimum required roof slope for roofing materials. For every 12 horizontal feet the roof changes 8 feet in vertical height. This minimum slope requirement can be found in the installation instructions for almost every manufacturer and. An installer will apply the cedar shingles of a fully waterproof built up roof or layer.

Lap sealants shall be applied in accordance with the approved manufacturer s installation instructions. If you desire a cedar roof for your home the ideal pitch for your roof ranges from a five pitch to a 12 pitch. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. 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.

On lower slopes shingles or shakes may be installed over a fully waterproof built up roof bur or membrane roof. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. If your home features a low slope roof you can still install the cedar roof of your dreams. Minimum pitch for cedar roofs.

Shingles of all types need to have a slope to function properly. Minimum required slope x in 12 minimum required slope degrees asphalt shingles. In 12 0 25 in 12 1 19 built up roof coal tar pitch. Slate shingles can only be installed on roof slopes of 4 12 or greater 33 slope.

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 slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. The davinci composite shake is the best possible option i could find for staying as close to real wood on our 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.

The requirements for an asphalt shingles roof are contained in the international building code. The minimum requirement is 2 12. This roof gives me confidence. That works out to about nine degrees if that works better for you.

Depending on the roof profile there are minimum roof slope requirements.