A new technical brief from SPRI, the trade association representing the manufacturers of single-ply roofing systems and related component materials, addresses construction-generated moisture and its impact on commercial roofing systems.
Construction-generated moisture comes from activities including pouring concrete, burning propane heaters, painting, plastering, and drywall finishing. These activities can contribute to excessive levels of relative humidity inside the structure when proper remediation measures are not taken. Accumulation of condensation within the roofing assembly and within the structure can result when the temperature is at or below the dew point.
To control moisture, designers must identify the sources of moisture and develop a remediation plan during the design process. To reduce the probability of condensation, buildings under construction must be adequately ventilated, particularly during concrete hydration and other high moisture-related construction activities.
SPRI recommendations include avoiding the use of wet materials or materials with excessive moisture, installing vapor retarders in the roof assembly, avoiding penetrating vapor barriers, installing at least two layers of insulation, and always sealing deck-to-wall joints and gaps around roof penetrations.
Related Stories
| Aug 10, 2022
Gresham Smith Founder, Batey M. Gresham Jr., passes at Age 88
It is with deep sadness that Gresham Smith announces the passing of Batey M. Gresham Jr., AIA—one of the firm’s founders.
| Aug 9, 2022
Work-from-home trend could result in $500 billion of lost value in office real estate
Researchers find major changes in lease revenues, office occupancy, lease renewal rates.
| Aug 9, 2022
5 Lean principles of design-build
Simply put, lean is the practice of creating more value with fewer resources.
| Aug 9, 2022
Designing healthy learning environments
Studies confirm healthy environments can improve learning outcomes and student success.
Legislation | Aug 8, 2022
Inflation Reduction Act includes over $5 billion for low carbon procurement
The Inflation Reduction Act of 2022, recently passed by the U.S. Senate, sets aside over $5 billion for low carbon procurement in the built environment.
| Aug 8, 2022
Mass timber and net zero design for higher education and lab buildings
When sourced from sustainably managed forests, the use of wood as a replacement for concrete and steel on larger scale construction projects has myriad economic and environmental benefits that have been thoroughly outlined in everything from academic journals to the pages of Newsweek.
AEC Tech | Aug 8, 2022
The technology balancing act
As our world reopens from COVID isolation, we are entering back into undefined territory – a form of hybrid existence.
Legislation | Aug 5, 2022
D.C. City Council moves to require net-zero construction by 2026
The Washington, D.C. City Council unanimously passed legislation that would require all new buildings and substantial renovations in D.C. to be net-zero construction by 2026.
Cultural Facilities | Aug 5, 2022
A time and a place: Telling American stories through architecture
As the United States enters the year 2026, it will commence celebrating a cycle of Sestercentennials, or 250th anniversaries, of historic and cultural events across the land.
Sponsored | | Aug 4, 2022
Brighter vistas: Next-gen tools drive sustainability toward net zero line
New technologies, innovations, and tools are opening doors for building teams interested in better and more socially responsible design.