Permits unvented attics and unvented enclosed rafter assemblies to be sealed with air-impermeable insulation in order to help attain building decarbonization goals.
Permits unvented attics and unvented enclosed rafter assemblies to be sealed with air-impermeable insulation in order to help attain building decarbonization goals.
Permits unvented attics and unvented enclosed rafter assemblies to be sealed with air-impermeable insulation in order to help attain building decarbonization goals.