Codes and Unvented Roof Assemblies

The IRC allows unvented roofs—but only under specific conditions. Here’s how to navigate the requirements and choose a compliant approach. The IRC allows unvented roofs—but only under specific conditions. Here’s how to navigate the requirements and choose a compliant approach.Roofs, Air Barrier, Building Codes, Roof Insulation, Unvented Attic, Unvented Roof, unvented roof assembly, vapor diffusion portsRead MoreGreenBuildingAdvisor