The Ontario Building Code | Alternate Installation Methods

9.26.1.2. Alternate installation Methods

(1) Methods described in CAN3-A123.51-M, "asphalt Shingle application on Roof Slopes 1:3 and Steeper", or CAN3-A123.52-M, "asphalt Shingle application on Roof Slopes 1:6 to Less than 1:3", are permitted to be used for asphalt shingle applications not described in this Section.