Posted By ICFconstruction on 11/02/2009 5:49 AM What is recommended for an underlayment? Do any of the metal roofs need solid sheathing or just purlins? Brad;
installation over purlins only is possible, if the MFG allows it. When going over a solid deck 30# felt at a min. but preferably over an ice & water shield. pick you roof then see what their recommendations are
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