ASTM E2018 - 15 - Standard Guide for Property Condition Assessments: Baseline Property Condition Assessment Process has been updated for 2015.  This guide is intended for use on a voluntary basis by parties who desire to obtain a baseline PCA of commercial real estate



This is the third edition of CSA A123.21, Standard test method for the dynamic wind uplift resistance of membrane-roofing systems. It supersedes the previous editions published in 2010 and 2004.  Introduced in the National Building Code of Canada in March 2015, the standard evaluates the resistance of amembrane-roofing system to dynamic wind uplift.

November 2011

The 25th Anniversary of the Symposium Series on Roofing Research and Standards Development, STP 1538, with ASTM Technical Committee D08 on Roofing and Waterproofing hosted various technical papers.  Included is : "Dual Barrier Protected Membraen Roof Assemblies", by W. Allen Lyte.

March 2009

The 12th Canadian Conference on Building Science and Technology to provide a forum to present, discuss and sharerelevant building science knowledge and experience for those directly involved in thebuilding industry both nationally and internationally.  Included is: "Dual Barrier Roof Assemblies", by W. Allen Lyte.

March 2007


The 11th Canadian Conference on Building Science and Technology Confernece coveres 45 papers that provide inforamtion on the beadth of current academic, reasearch and development, field experience and construction topics  Included is: "The New Ice Age - A Practitioner's Perspective on Ice Damming Across Canada", by W. Allen Lyte and Chris Love.

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W. Allen Partners 


6-14845 Yonge Street, Suite 222

Aurora, ON  L4G 6H8


Office: 416-899-1404