Delta Maxx Titan vs GAF Deck Armor
We are evaluating permeable roof underlayments for a project on the border of zone 2 and 3. Roof is standing seam metal installed on floating clips with an air space between the metal and the underlayment. There will be several inches of closed cell insulation against the inside roof deck in the unvented and conditioned attic.
Two of the underlayments being considered are Delta Maxx Titan and GAF Deck Armor.
Would be interested in hearing about positive or negative experiences with either of these products.
The Maxx Titan is considerably more expensive the Deck Armor. Has anyone here used both?
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