b'T&R UpdateASTM Eighth Symposium on Roofing Research and Standards DevelopmentMatt Dupuis, PhD PEO n December 6th, 2015 the D08 committeehave left the membrane undamaged, but the energy on Roofing and Waterproofing of ASTMtelegraphed through to the various substrates International gathered for a symposium. Intested, causing damage below. all, eleven papers were selected for the symposium3.Evaluation of Air Leakage Properties of Seam-proceedings. This article will provide a brief synopsisFastened Mechanically Attached Single-ply and of each paper that was presented. This is done inPolymer Modified Bitumen Roof Membrane effort to keep the reader informed of the current stateAssembliesof peer reviewed roofing research. This should beS. Molleti and A. Baskaran, National Research differentiated from research sources such as whiteCouncil of Canada, et al.papers published online and trade magazine articlesThis research focused on the air barrier potential that are held to a much lower standard, if any peerof mechanically fastened single-ply membranes review. Consequently these types of research papersand polymer modified bitumen membranes. Using can be where the concepts and data come from, thata state of the art method and equipment the may eventually be incorporated into an industryNRC in Canada quantitatively measured the air standard, such as an ASTM standard. leakage from these systems. The systems that were In italics after each paper are summaries based onevaluated included typical roof details, such as the authors recollection and any notes taken duringcurbs and drains. The net result of the testing was the presentation. The full papers have not been madethat the air leakage from these systems was 100 available as of this writing (Expected 12/14/15) astimes less than that required by current energy such reading the papers, when available, to confirmcodes. In short, they pass by a large margin. details is advised.4.Shear Resistance of Paving and Waterproofing The papers delivered were: Systems1.Developing a Test Method for a Very Severe HailP. Moser and G. Doelp, Simpson Gumpertz & Heger Rating For Low Slope Roofing Assemblies Inc., and J. Haydu, Bridge PreservationD. A. Boardman,FM Approvals The authors made an experimental investigation FM Approvals looked at the effects of 2 inch iceinto the quantitative measurement of adhesion ball impacts on low slope systems. These impactsof hot mix asphalt to a waterproofing membrane contained double the energy of the more commoninstalled over concrete. This paper was focused steel ball test. The impacts were visually inspectedon waterproofing over vehicular bridge decks.after two impacts in the same area. Membrane5.Quantitatively Assessing the Life of 55% Al-over metal plates and screws fared the worst,Zn Alloy-Coated Steel Standing Seam Roof while adhered systems with cover boards faredSystemsmuch better. R. Dutton, Ron Dutton Consulting Services and 2.Understanding the Puncture Resistance of TPORob Haddock, The Metal Roof Advisory GroupMembranesThe authors conducted field and laboratory S. Bhawalkar, T. Yang, and T. J. Taylor, GAFinvestigations of Galvalume standing seam GAF researchers primarily looked at two puncturemetal roofs in several climate zones around mechanics for TPO membranes. A slow puncture,the United States. From the samples collected such as a person stepping on a sharp metal object.the researchers reverse calculated corrosion They also looked at a fast impact, such as a sharprates and then extrapolated forward the life metal object being dropped onto the membrane.expectancy for this type of roof system. Time will This paper outlined experimental methods forbe the true test if any of these roofs will last the evaluating these two types of puncture.In additionover 100 years that the authors projected.they also looked at hail impact mechanics for TPO6.Thermal Performance Evaluation of Roofing membranes. Interestingly some of the impacts mayDetails to Improve Thermal Efficiency and 12 www.mrca.orgMidwest Roofer'