Wood Shingles and Shakes Materials

(1)  Shingles and shakes shall conform to,

    (a)   CSA O118.1, “Western Red Cedar Shakes and Shingles”, or

    (b)   CSA O118.2-M, “Eastern White Cedar Shingles”.

(2)  Western cedar shakes shall be not less than No. 1 grade or Handsplit grade, and western cedar shingles not less than No. 2 grade, except that No. 3 grade may be used for undercoursing.

(3)  Eastern white cedar shakes shall be at least B (clear) grade, except that C grade may be used for undercoursing.

Article Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only