Abstract
Newly poured and, in some instances, existing structural concrete roof decks present unique moisture migration problems for the roofing industry. In a number of instances reported to NRCA, significant amounts of water have been found in roof systems within as soon as several months after construction. In most of these situations, it was determined the roof membranes were watertight and not the sources of the moisture infiltration. In many of these situations, this moisture infiltration resulted in damage to the roof systems, including adhesion loss, issues with water-based and low-VOC adhesives, metal and fastener corrosion, insulation R-value loss and microbial growth.
Newly poured and, in some instances, existing structural concrete roof decks present unique moisture migration problems for the roofing industry. In a number of instances reported to NRCA, significant amounts of water have been found in roof systems within as soon as several months after construction. In most of these situations, it was determined the roof membranes were watertight and not the sources of the moisture infiltration. In many of these situations, this moisture infiltration resulted in damage to the roof systems, including adhesion loss, issues with water-based and low-VOC adhesives, metal and fastener corrosion, insulation R-value loss and microbial growth.
Date
6/2020
6/2020
Author(s)
Mark Graham
Mark Graham
Page(s)
1-3
1-3
Keyword(s)
concrete; mix; moisture; plastic; sheet
concrete; mix; moisture; plastic; sheet