Specification History

SWS Version Created Specification ID Title Specification Objective Supporting Materials Rationale Status
Version 2020 14/08/2020 - 14:23 4.0104.5e Installation

Apply SPF to prescribed R-value in a continuous layer over entire surface of knee wall from roof deck to attic floor air barrier using a pass thickness maximum in accordance with manufacturer specifications

In colder climates (IECC Zones 5-8), install SPF to a thickness of at least a class II vapor retarder or have at least a class II vapor retarder coating or covering in direct contact with the underside of the SPF

Continuous and contiguous pressure and thermal boundary that prevents vapor intrusion

Black Line
Version 2020 14/08/2020 - 14:23 4.0104.5e Installation

Apply SPF to prescribed R-value in a continuous layer over entire surface of knee wall from roof deck to attic floor air barrier using a pass thickness maximum in accordance with manufacturer specifications

In colder climates (IECC Zones 5-8), install SPF to a thickness of at least a class II vapor retarder or have at least a class II vapor retarder coating or covering in direct contact with the underside of the SPF

Continuous and contiguous pressure and thermal boundary that prevents vapor intrusion

Black Line