A publication of the Ontario Building Envelope CouncilSpring 2019Pushing theEnvelopeCanadaTransparent. Insulating. 99.9% Air.This Small Silicon-Based Solid Could Make a HUGE Difference in the Building EnvelopeCanada Post Publications Agreement Number: 40609661Pushing the Envelope Canada 9UP FRONTMessage from the President ...............................................................................................13Meet the OBEC Board of Directors .................................................................................13FEATURESThe Use of Aerogel-Enhanced Blankets for Thermal Bridging Correction in Concrete and Steel Buildings ................................................................17Fenestration Systems: It’s All About the Plumbing! ........................................................23Comparing Condensation Potential in Conventional and Hybrid Roof Assemblies: A Case Study ...............................................................27Estimating Preconstruction Airtightness in Ontario: Is it Possible? ..............................31The What, Why, Who & When of Building Commissioning: The Relationship Between Mechanical & Building Envelope Commissioning ......................................36Pushing the Envelope CanadaA publication of the Ontario BuildingEnvelope CouncilSpring 2019Published For:The Ontario Building Envelope Council2800 – 14th Ave.Suite 210Markham, ON L3R 0E4Phone: 647-317-5754Fax: 416-491-1670info@obec.on.cawww.obec.on.ca©2019 Matrix Group Publishing Inc. All rights reserved. Contents may not be reproduced by any means, in whole or in part, without the prior written permission of the publisher. The opinions expressed in this publication are not necessarily those of Matrix Group Publishing Inc. Printed in Canada. OBEC does not specifically endorse the editorial, products or services contained within this magazine. These products and services are presented here as an indication of the various possibilities in the Marketplace. OBEC wishes to advise the reader that sound Building Science Practices should be applied to any and all product or service selections. OBEC does not make or imply any warranties as to the suitability of any of these products or services for any specific situation. Furthermore, the opinions expressed in this magazine’s editorial content may not necessarily reflect the opinions of OBEC.Aerogel. Transparent. Insulating. Lightweight—99.9 per cent air! Commonly referred to as “frozen smoke,” this small silicon-based solid could be making a huge difference in the building envelope. Aerogel is 1,000 times less dense than glass and is a very effective insulator (39 times more so than fibreglass). Aerogel could be used with components of spacecraft and space stations (NASA has used aerogel to trap tiny particles of space dust for research), in sensors to detect chemical warfare agents, or as super insulation between window panes. Turn to page 17 to read the interesting and educational article written by Rashmi Sharma, B.Arch., CPHC, and Dr. Umberto Berardi, M.Sc., Ph.D., P.Eng., Ryerson University, on how aerogel-enhanced blankets can be used for thermal bridging correction in concrete and steel buildings. PHOTO CREDIT: U.S. Department of Energy / Science Photo Library.Pushing theEnvelopeCanadaA publication of the Ontario Building Envelope CouncilA publication of the Ontario Building Envelope CouncilSpring 2019Pushing theEnvelopeCanadaTransparent. Insulating. 99.9% Air.This Small Silicon-Based Solid Could Make a HUGE Difference in the Building EnvelopeCanada Post Publications Agreement Number: 40609661n n n TABLE OF CONTENTSON THE COVER:Next >