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Abstract
Low-slope and Steep-slope unvented roof systems (I.E. insulations and air barrier are applied directly to the underside of the roof deck) are common in applications where designers are seeing cost-effective and energy-efficient roof assemblies. However, architects of these "compact" roof assemblies must consider vapor permeance and arrangement of the materials to produce acceptable hygrothermal performance and low risk of condensation in the resulting conditioned attic space.
Low-slope and Steep-slope unvented roof systems (I.E. insulations and air barrier are applied directly to the underside of the roof deck) are common in applications where designers are seeing cost-effective and energy-efficient roof assemblies. However, architects of these "compact" roof assemblies must consider vapor permeance and arrangement of the materials to produce acceptable hygrothermal performance and low risk of condensation in the resulting conditioned attic space.
Date
6/2020
6/2020
Author(s)
Anthony Nicastro & Megan Toumanios
Anthony Nicastro & Megan Toumanios
Page(s)
18-23
18-23
Source
Construction Specifier
Construction Specifier
Keyword(s)
vapor; retarder; panels; sprayfoam; attic; space; coating
vapor; retarder; panels; sprayfoam; attic; space; coating