CSA A123.22:08 (R2023) :
Self-adhering polymer modified bituminous sheet materials used as steep roofing underlayment for ice dam protection (Adopted ASTM D 1970-01, with Canadian deviations)
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Self-adhering polymer modified bituminous sheet materials used as steep roofing underlayment for ice dam protection (Adopted ASTM D 1970-01, with Canadian deviations)
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