Minimum Pitch For Cedar Shake Roof

Modern building codes require a minimum slope of 4 12 for shakes and 3 12 for shingles.

Minimum pitch for cedar shake roof.

Low sloped roof shingle installation. Let us recap on the minimum roof pitch required for each type of roofing material. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Nailing schedule for wood shingles shakes. The maximum width of flat grain shingles is 8 inches. 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.

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. We discuss the following. Available 100 edge grain 100 all clear in 16 or 18 or 24 lengths. It is typical to see installations with slopes greater than these.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. 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. Irc and ibc codes allow a minimum roof slope of 3 12 for shakes and shingles mansard roofs installation guidelines are found here. At these pitches there is a possibility of some water penetration.

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. As with asphalt shingles flashing at sidewalls should be stepped flashing not continuous flashing. Wood shingle wood shake roof installation specifications. The minimum width for both shakes and shingles is 3 inches.

Minimum pitch for cedar roofs. This wood roof article describes the slope and exposure requirements for wood shake or wood shingle roofs and provides detailed instructions on how and where to nail or fasten wood shingles shakes on roofs. 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. Metal roof shingles require a minimum roof pitch of 3 12 or greater.

Asphalt shingles require a minimum roof pitch of 2 12 or greater. The minimum roof slope on which certi label shakes are recommended is 4 12 and for certi label shingles 3 12. The minimum roof pitch for shingles and shakes is 14 degrees.