ice guard entire roof?

matt bowes
Hello, I am building a 2 story home on the Straits of Mackinaw in Northern Michigan. We get lots of wind, snow, rain, etc. My local supplier recommended ice guarding the entire OSB roof deck before laying down the metal roof. That materials cost: $2700. Was wondering if this is wasteful and would I be okay just ice guarding the usual spots, felting the rest. Was planning to use standing seam galvalume roof. Thanks, Matt
Todd Miller
Isaiah Industries, Inc.
Matt, what sort of roof pitch do you have? What sort of ventilation does / will the attic have?

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