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Materials the interior and exterior , limiting the movement and accumulation of water vapor poses challenges for designers . Vapor molecules naturally migrate from warmer to cooler areas , and in cold storage , this can lead to condensation , buildup of moisture inside the building , and damage to the roof or the building structure . Design professionals may specify the use of an air or vapor retarder , such as V-ForceTM Vapor Barrier Membrane , to minimize air and water vapor from infiltrating the roofing system . Effective vapor drive prevention bolsters the building ’ s energy efficiency and helps ensure a long-lasting roofing system .
Multi-family housing units
The projected growth of multi-family housing is driven by several factors : rising interest rates , the high cost of homeownership , and a limited supply of single-family homes . Developers will increasingly turn to multi-family housing projects to meet market demand .
Well-insulated roofing systems play an important role in reducing energy consumption and lowering utility costs for tenants . Regional climate is one of the top factors in determining the best roofing options . For example , in southern climates , reflective roofs help minimize heat gain and reduce the strain on cooling systems during the summer . In northern climates , heatabsorbing roofs can reduce the demand on heating systems during colder months .
For re-roofing an existing multi-family housing unit , Elevate APP and SBS-modified bitumen roofing systems are time-proven and the choice of many building owners and contractors for completing projects quickly and on budget . Elevate modified bitumen systems perform well in all climates and are made to last . A self-adhered system , whether TPO or EPDM , is also ideal for re-roofing as the VOCfree formulation allows contractors to install a new roofing membrane while tenants remain in the building with minimal disruptions .
Conclusion
As the construction of multi-family housing , data centers , and cold storage facilities expands , it ’ s important for builders to keep up with the latest , high-performing roofing and insulation technologies and install the customized roofing system best suited to meet the specific needs of each job . This includes the energy efficiency requirements of multi-family housing to the rapid installation needs of data centers , and the extreme temperature controls required in cold storage facilities . ■
For a list of the sources used in this article , please contact the editor .
Jamie Gentoso holcimelevate . com / us-en / find-contractor
Jamie Gentoso is President of Holcim Building Envelope and Global Head of Holcim Solutions & Products . Holcim Building Envelope delivers high-performance solutions for the entire building envelope , including commercial and residential roofing , wall , and lining systems . As part of Holcim Building Envelope ’ s powerful portfolio , Elevate Commercial Roofing Systems brings over 40 years of expertise in advanced and sustainable roofing solutions , reflecting Holcim ’ s commitment to quality , innovation , and industry leadership .
* Based on testing conducted by a third party in 2017 using UltraPly™ TPO SA versus standard adhered TPO . Application times vary with settings and environmental factors ; actual results will vary . ** ISOGARD polyiso insulation performed up to 40 percent better in cold temperature 40 ° F ( 4 ° C ) applications according to ASTM C1289 standards than major competitors when tested by an independent third party in September 2022 . The increased R-value per inch indicates better thermal performance in cold temperature 40 ° F ( 4 ° C ) from the same roofing systems using the same amount of insulation compared to leading competitive products on the market today . Results may vary .
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