Specification History

SWS Version Created Specification ID Title Specification Objective Supporting Materials Rationale Status
Version 2020 14/08/2020 - 14:24 4.0302.7e Installation

Install rigid insulation continuously over entire accessible area to prescribed R-value in full contact with the air barrier and all structural framing without gaps, voids, or misalignments

If installing multiple layers, offset seams at least 12" and seal the seams of each layer before applying the next

Where rigid foam plastics are used, in no case will the final thickness exceed the manufacturer's tested thickness used to determine the maximum 75 flame spread and 450 smoke-development index when tested to ASTM E84 or UL 723

Continuous and contiguous thermal boundary that prevents excessive vapor intrusion

Black Line
Version 2020 14/08/2020 - 14:24 4.0302.7e Installation

Install rigid insulation continuously over entire accessible area to prescribed R-value in full contact with the air barrier and all structural framing without gaps, voids, or misalignments

If installing multiple layers, offset seams at least 12" and seal the seams of each layer before applying the next

Where rigid foam plastics are used, in no case will the final thickness exceed the manufacturer's tested thickness used to determine the maximum 75 flame spread and 450 smoke-development index when tested to ASTM E84 or UL 723

Continuous and contiguous thermal boundary that prevents excessive vapor intrusion

Black Line