Minimum Pitch For Cedar Shake Roof

Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Minimum pitch for cedar shake roof.

If you desire a cedar roof for your home the ideal pitch for your roof ranges from a five pitch to a 12 pitch. The minimum roof slope on which certi label shakes are recommended is 4 12 and for certi label shingles 3 12. Metal roof shingles require a minimum roof pitch of 3 12 or greater. The minimum width for both shakes and shingles is 3 inches.

Modern building codes require a minimum slope of 4 12 for shakes and 3 12 for shingles. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Nailing schedule for wood shingles shakes. Minimum pitch for cedar roofs.

It is typical to see installations with slopes greater than these. At these low pitches 14 22 degrees care must be taken and a water impermeable vapour permeable underlay must be used underneath with a ventilated space between the membrane and the shingles. The minimum roof pitch for shingles and shakes is 14 degrees. 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.

Irc and ibc codes allow a minimum roof slope of 3 12 for shakes and shingles mansard roofs installation guidelines are found here. Wood shingle wood shake roof installation specifications. We discuss the following. Asphalt shingles require a minimum roof pitch of 2 12 or greater.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Page 23 cedar care maintenance overview a word about topical treatments for installed roofs topical treatment products power washing the beauty of cedar download pdf page 24 coverage and exposure tables shingle coverage table 1 shingle exposure table 2 shake coverage table 3 shake exposure table 4 download pdf. Normal roof slope for typical installation. Available 100 edge grain 100 all clear in 16 or 18 or 24 lengths.

As with asphalt shingles flashing at sidewalls should be stepped flashing not continuous flashing. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. If 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof. Low sloped roof shingle installation.

The maximum width of flat grain shingles is 8 inches. At these pitches there is a possibility of some water penetration. Handsplit red cedar shakes cedar shake shingle bureau the recognized authority sin ce 1915 sumas washington 604 820 7 700 certi split the premium grade of shingles for roofs and sidewalls.