b'T&R UpdateCondensation Resistance 11. Study on Hygrothermal Conditions in E. K. Olson, Simpson Gumpertz & Heger et alAttic Space of Wooden Houses with EavesThis paper proved to be very interesting.Ventilation during Winter Season in a Mild The research team used 3D modeling thermalClimate Region of Japanmodeling software to create and analyze typicalD. Matsuoka, Polus R&D Center of Life-Styleroof system details, such as drains, mechanicalA Japanese researcher reported on experimental fasteners and stanchions. Using the thermal resultsefforts to measure and model ventilation air flow of the individual components they were able torates in attics. These air flow rates were used to extrapolate the impact to what could be calledpredict air and moisture transport in and out of the apparent R-value of the roof. We typically onlythe insulation in the attic space.consider the best case of pure insulation for doingThe papers from these events can have profound and this calculation. In doing so losses ranged fromsometimes unexpected results on the roofing industry. a few percent to a 17% R-value loss for utilizingThe sagest advice for any member of the roofing mechanical fasteners in the roof system. If theseindustry is to at least be aware of these papers and models are ever validated, it could have an impactpass any questions to your technical committees for on energy code compliant roof construction in theconsideration and or action.future. One to watch for certain.7.Moisture and Durability Performance of Low- Matt Dupuis, PhD PE, of SRI in Middleton, WI, can be reached sloped Roof Structures with Varying Surfaceat MDupuis@sri-engineering.com. Dupuis serves on MRCAs Types and Ballast Layers Technical and Research Committee.C. Buxbaum, W. Gallent, and S. Paulitsch, Carinthia University of Applied Sciences, et al.Not Presented due to travel issues 8.Accelerated Aging of TPO Membranes CUSTOM TAILORED Prediction of Actual Performance LEgAL SOLUTIOnS T. J. Taylor and L. Xing, GAFA peer reviewed version of the research project GAF presented at the 2015 MRCA convention. Thefor Your Businessincreased heat aging temperature (270F v 240F) and weight loss criteria (1.5%) are currently beingIn some areas of the law, off the debated in the D6878 Standard Specification forrack wont do! Let our experienced Thermoplastic Polyolefin Based Sheet Roofing task group. attorneys provide you with effective legal solutions. 9.Long-term Reflective Performance of Roof Surfaces in the Chicago AreaOSHAM. Rupar and M. S. Graham, NRCAWorkers Comp DefenseThe NRCA reported data and conclusions from a Labor & Employment Law5 year field reflectivity measurement study on a collection of roofs in the Chicago metro area. One of Construction Lawthe most stand out conclusions was the importance of increased slope in maintaining high reflectivityWE ARE A PERfEct fit, levels. In addition researchers noted temporary andNo MAttER thE SizE Gary W. Aumanor periodic increases in reflectivity from rain events.10. Hydrothermal Analysis for Pitched Roof in Consideration of Water Penetration through Pinholes of Roofing Underlayment Assemblies H. Saito, Ashikaga Institute of TechnologyA Japanese researcher reported an experiment to quantify the intrusion of wind driven rain and subsequent dry under clay tile roof systems. www.dmfdayton.com(937) 223-6003www.mrca.orgMidwest Roofer 13Dunlevey Ad_Auman_mica.indd 1 2/19/14 2:57:56 PM'