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Abstract
Architectural metal roofing systems (AMRS) are considered to be a very durable type of steep-slope roofing system. Architectural metal roofing systems are commonly used in compact or unvented roofing assemblies over moisture susceptible, nailable wood-based substrates placed directly over or laminated to rigid insulation or over nailable roof decks with spray-applied air- and vaporimpermeable polyurethane foam (SPUF) insulation applied directly to the underside of the deck. Use of AMRS without ventilation to relieve trapped moisture within the compact roofing assembly is commonplace, but under certain conditions, this practice can be risky.
Architectural metal roofing systems (AMRS) are considered to be a very durable type of steep-slope roofing system. Architectural metal roofing systems are commonly used in compact or unvented roofing assemblies over moisture susceptible, nailable wood-based substrates placed directly over or laminated to rigid insulation or over nailable roof decks with spray-applied air- and vaporimpermeable polyurethane foam (SPUF) insulation applied directly to the underside of the deck. Use of AMRS without ventilation to relieve trapped moisture within the compact roofing assembly is commonplace, but under certain conditions, this practice can be risky.
Date
6/2020
6/2020
Author(s)
Eric K. Olson; Anthony J. Nicastro
Eric K. Olson; Anthony J. Nicastro
Page(s)
317-317
317-317
Keyword(s)
nailable; insulation; wood; assembly
nailable; insulation; wood; assembly