b'PHOTOVOLTAICS large obstructions. Make sure drains are situated at least 300 mm from any pene-tration or obstruction. Menzies High Quality Bonding(Figure2)orclampingMetal Flashings (Figure 3) methods rely on an adhesive or mechanical connection to the roofwww.menzies-metal.com Innovative Roofing Solutionssystem,tosupportPVarraysagainstsince 1978 bothdeadandliveloads.Adhesion methods bond the PV support struc- Eave Flashing Roof to Wall ture to the roof membrane; clampingFlashing iscommonformetalroofsystems. This means that the roof system itselfCurved FlashingsOutside Corners (thecollectiveandindividualbonds betweenconstituentmaterialsintheRoof Gable/Sundeck Flashing roofsystem)mustbeabletowith- W Valley Flashingstand the dynamic loads expected from the PV array (compression and uplift).Inside Corners While adhered PV supports are report- Curved Flashings edlycapableofresistingsubstantialHigh quality flashings with industry leading lead timeslive loads, the Design Authority should consult with the manufacturer of the Durable up to 22 gauge material (18 gauge galvanized)support to ensure both the roof system Prepainted both sidesitself and the bond between the roof Available in various colourssystemandthesupportwillsatisfy Stock profiles roll formed for consistent qualityCode requirements.Custom flashings availableThe future is now 1.800.665.8840 Whenapproachedmindfully,aroof designthatisattentivetolongevity, optimal performance and safe mainte-nance can thrive in the company of a photovoltaic array. Together, great roofs andthoughtfullydesignedphotovol-taic systems can help make the dream ofenergy-conservativeconstruction come true.Weve authored the book on great roofing design and construction stan-dards. Learn more about our RoofStar Guarantee Program at www.rcabc.org/, or visit our Roofing Practices Manual at rpm.rcabc.org/.About the author:JamesKlassenisaRoofStarTechnical Advisor and staffwriter with the Roofing Contractors Association ofBritish Columbia. He is a trained negotiator and conflict trans-formationfacilitator,andanexperienced roofing estimator, Occupational Health and Safetyprofessional,independentInsurance Claims Adjuster and Facilities Manager for a large private school in British Columbias FraserValley,overseeingbuildingmainte-nance, landscaping, sport field rehabilitation, custodialservices,schooltransportationand driver education and capital projects.www.rcabc.org l31'