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Cedar shakes and shingles shall be applied to a
continuous wood decking, spaced sheathing is not permitted.
MR-1.1 Application Standards
ARCA members consider what constitutes the
essential roofing practices which must be carried out for a metal
roofing system to provide an acceptance service life in Alberta.
These essential practices are referred to as application standards
and are the basis for the issuance of the Warranty
It is impossible to illustrate every possible design scenario
for sheet metal flashing details. The details illustrated by ARCA
Warranty Ltd. are presented as suggested details only,
incorporating sound roofing design principles.
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