Bryan Uhler walks through an insulated, over-vented roof assembly designed for high-performance homes, explaining how the layered system manages structure, insulation, air control, and ventilation at the roofline. The approach places continuous exterior insulation above the roof sheathing to reduce thermal bridging while keeping mechanical systems and ductwork inside conditioned space. A taped sheathing layer acts as the primary air barrier, with dense mineral wool providing both thermal performance and compressive strength. Above that, a vented cavity allows moisture to dry and helps regulate roof temperature. The assembly supports durability, energy efficiency, and moisture control without relying on spray foam.

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BRYAN UHLER
Pioneer Builders