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For Your Consideration - The use of alternative underlayments with steep-slope roof coverings should be carefully considered


Professional Roofing


2/2013

48

underlayments; roof coverings; steep-slope

The number of synthetic underlayment products submitted for ICC-ES evaluation represents a mere fraction of the available synthetic underlayment products. Also, because synthetic underlayments currently are not addressed by a consensus standard such as those developed by ASTM International, these products can be difficult to evaluate or compare. Even those products deemed as an acceptable equivalent to products in the code should be considered as meeting only a minimum requirement.


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