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Serving Alberta's Roofing Industry Since 1961
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ARCA divides roof systems and materials into two classifications: low slope and steep slope. Low slope roofing includes water impermeable, or weatherproof, types of roof membranes installed on slopes less than or equal to 2:12. Steep slope roofing includes watershedding types of roof coverings installed on slopes exceeding 4:12.
There are three classifications of low slope roof membranes or systems.
The Alberta Roofing Contractors Association was established in
1961 as a result of a merger between the Master Bonded Roofers
Association of Edmonton and the Calgary Built-up Roofing
Association. The first Annual meeting of the company was held in
The roof deck provides the structural support
for the roofing system. Roof decks shall be designed in accordance
with the Alberta Building Code to support design and construction
BUR-2.1 Control Joints
Roofing control joints are required to prevent
structural movement or stresses within the roofing system from
damaging a Built-Up Roofing (BUR) membrane.
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