b'BUILDING CODEvanished, and the Code shifted entirely toward specific, measurable performance criteria, driven in large part by a singular change in perspective: making buildings moreenergyefficientbyfocusingon the measurable continuity and thermal performance of the entire building enclo-sure (see my article, Stepping up our game, in the Fall 2018 issue of BC Roofing). By doing this, the Code allowed for vari-ablesinsystemdesign,providedthey achievedminimumperformancechar-acteristics. This also meant that energy efficient mechanical systems became one strategy among several to make buildings more energy efficient. This change in perspective dramat-icallyimpactedroofsystemdesign and strongly linked formerly nebulous connections between Part 4, 5 and 10 in Division B. For example, the 2018 Code introducedexpandedcalculationsin Part 4 concerning the determination of Specified Wind Loads. Part 5 (including thenotestoPart5)addedmade-in-Canadasolutionsforkeepingoutthe weather while simultaneously satisfying the structural design criteria in Part 4; that guidance was largely absent from earliereditionsoftheCode,which led designers to use whatever could be deemedCode-compliant,including Menzies High Qualitythecitationofstandardsandspecifi-cations published by FM Global. And Metal FlashingsbecausetheCodeplacedaheavier www.menzies-metal.comemphasis on the measurable continuity Innovative Roofing Solutions of air and vapour controls (Part 5 and since 1978Part 10), the design and construction of the roof took on more significance as a Roof to WallEave Flashingkey facet of the entire building enclo-Flashingsure. I will have more to say about these changes in future articles.Curved FlashingsOutside Corners Roof Gable/Sundeck FlashingComplexity and IntegrationW Valley Flashing IfyouarenewtoreadingtheCode, the first thing you must understand is that while the Code is clearly organized, Curved FlashingsInside Cornersitiscomplexandintegratedamong High quality flashings with industry leading lead times andacrossdivisionsandparts.Most readersfocusonthehow-totech- Durable up to 22 gauge material (18 gauge galvanized) nical requirements of Division B. ButPrepainted both sides if you read the Code carefully, you willAvailable in various colours see that every Part in Division B beginsStock profiles roll formed for consistent quality with a cross-reference to either DivisionCustom flashings available A or Division C requirements. Become familiar with entire Code, not only the 1.800.665.8840divisions or parts that seem applicable to a specific subject or issue.16lROOFINGBC l WINTER/SPRING 2021'