June 2009

Construction-generated moisture | Tech Today

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Construction-generated moisture

SPRI issues a bulletin aimed at reducing moisture in single-ply roof systems

by Mark S. Graham
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In late 2008, SPRI issued an advisory bulletin addressing construction-generated moisture and its effect on roof systems. If you are involved with the design and installation of single-ply membrane roof systems, particularly those used in new construction, I encourage you to be aware of this bulletin and SPRI's recommendations.

The bulletin

SPRI's bulletin indicates roof systems are designed to accommodate typical occupancy-generated moisture; however, construction-generated moisture rarely is recognized and seldom is addressed by roof system designers.

Possible sources of construction-generated moisture cited include the curing of concrete; use of propane- or oil-burning heaters; and paint, drywall and other water-based...

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SPRI's Advisory Bulletin

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