Low/flat slope metal roof underlayment
I currently have a snap lock standing seam metal roof and live in climate zone 4c. The attic is vented soffit to ridge, and fiberglass insulation in the ceiling joists.
I’ve been told by many I need a new roof, and a particular style at that. A metal roof mechanically seamed/crimped, and butyl injected at the seams… designed to handle low slopes, as low as .5:12. My roof at lowest is .75:12. the other side is 2:12.
I have found the proper roof but the underlayment options and guidance has been scattered. Seems to me that it’s best that I cover the entire roof in peel and stick synthetic ice and water shield, rather than just around the eaves, perimeter etc. some brands recommended have been grace, iko, and epilay plystik plus (which is the recommended and/or partnered brand with my roofing manufacturer)
Have I been given good advice?… cover the entire roof in peel and stick? I have read about breathability/permeability being a need in some roofs so I’m just not sure…
ill be doing the roof myself.
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