CSA A123.51-14 (R2018)
Asphalt shingle application on roof slopes 1:6 and steeper
standard by CSA Group, 01/01/2014
Full Description
This Standard provides minimum requirements for the application of asphalt shingles on roofs with aslope of 1:6 and steeper.
Portions of this Standard may not apply to laminated and/or dimensional shingles. The manufacturers ofthese shingles should be consulted for specific installation instructions.
Note: Annex A is included to provide recommendations for acceptable substrates for shingles; Annex B, recommendations for acceptable ventilation below the shingle substrate , and recommendations on the application of asphalt shingles over insulation; and Annex C, other precautions for shingle installation.