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Abstract
Although widely practiced within the roofing industry, roof recover, particularly over failed roofs that contain significant amounts of moisture, remains a controversial issue. The key issues surrounding this controversy are the drying of wetted insulation, deck deterioration (dry rot fo wood, disintegration of concrete, corrosion of metal), and fastener failures. To address these issues, a consortium made of of SPRI and its member companies, RCI and ORNL have initiated two demonstration projects to recover failed roofing systems containing moisture and to monitor the performance of those roofing systems after the reroofing. This paper describes the building selecction, reroofing proces, data collection, and nondestructive analyses that have been performed to determine if the old roofing system is drying and to assess whether the fasteners have been adversely affected by the wet insulation material. Computer simulations of the roof system have been performed to predict drying; these data are compared to actual core measurements and nondestructive test results to determine the drying rate of the recovered roof systems.
Although widely practiced within the roofing industry, roof recover, particularly over failed roofs that contain significant amounts of moisture, remains a controversial issue. The key issues surrounding this controversy are the drying of wetted insulation, deck deterioration (dry rot fo wood, disintegration of concrete, corrosion of metal), and fastener failures. To address these issues, a consortium made of of SPRI and its member companies, RCI and ORNL have initiated two demonstration projects to recover failed roofing systems containing moisture and to monitor the performance of those roofing systems after the reroofing. This paper describes the building selecction, reroofing proces, data collection, and nondestructive analyses that have been performed to determine if the old roofing system is drying and to assess whether the fasteners have been adversely affected by the wet insulation material. Computer simulations of the roof system have been performed to predict drying; these data are compared to actual core measurements and nondestructive test results to determine the drying rate of the recovered roof systems.
Date
0/2001
0/2001
Author(s)
A Desjarlais; J Sheahan; P Garrigus
A Desjarlais; J Sheahan; P Garrigus
Page(s)
205-14
205-14
Keyword(s)
reroofing; failed roof; moisture; wet insulation; deck deterioration; fastener failure
reroofing; failed roof; moisture; wet insulation; deck deterioration; fastener failure