b'Retrofitting withMetal Roofs:Webinar Roofing In his recent webinar for Architectural Roofing&Waterproofing (ARW)Another major energy benefit of a retrofitemer an e ting syst ov xisUnive.rnity, Scott Kriner, technical director of the Metalonslo roof isincreased natural ventilationby convection Constructi petheprovided Association,is go reason why building owne.rn continue tothat is inherenta retrofit application,as ab sheathing said thereodinreferred toove opt for retrofitting their buildings with metal roofing. With operating andventilation (ASV), Kriner said. He notedtearchOak Ridge tha res from maintenancecontinuing to soar, metal offers long-term durability,National Laboratory, Oak Ridge, T confirms thatprovides up to a costsN,ASV enhances a\'s,improves energy efficiency. It also30%in heat gain through the roo "This can be increased building appearance andreductionf.to reduces environmental impact, KrinerMe roofing can provide45%a \'cool\' surface, such as the cool coatings o on metal roof said.talwhenffered reflective and emissive benefits to help reduce heat gain and the build systems,used." To listen toDecember 13, 2011, webinar visit www. isthe, ing\'s carbon footprint, has recycled content, and is fullyat thearwarchitect.com/ev /range/archive. recyclableentsend of a\'slife. building useful Kriner discussed the most common retrofit applicationsmetal over existing flat roofsmetal oversloped roofs-andmost andexistingthe low-slope common types of installations,and steep-slope roofs. "Low slope installations are usually utilitarian and economically driven. They provide a pitch froma maximum of 2:12, which also improves to discharge of rainwater," he said. "Steep slope installations have a slope greater than 2:and are more architecturally driven. During a retrofit 12 installation the building interior is not exposedtooutside elements or contamination from construction." Kriner stressed that when steep sloped metal roofs are installed over conventional membrane, tearoff of the existing roof is normally not required and removal of existing roof insulation may notbenecessary unless required by local codes.International Building Code (IBC- N west Arkansas Community C ge, Bentonv AR,solvedroof Theorth olle ille,hasitsleaka problems bytrofitting allssh me includingis three-s2006) requires some existing membraneto be removed, butgere it building wit tal,th tory, materials1 000-squa -fo bu g. The sta gmtal roof w chosenits it allows an exception for re-roofing buildings that have existing metal89, re otildin ndin sea me asfor durability, longevity, environmental benefits, and striking appear nce. aroofs. Aroof does not havebe removed. metalto Free .To Subscription !too1n onraitor All Roofing Contractors.-=~-Go\'lbWww.Roofingcontractor.Com- ~ And Click Subscribe NowEE==-~ JW Bloom GroupPub_, 248.244.6253 Fax 248.244.3949 Marcia WrightBlooml@bnpmelia comElizabeth Obloy Sales ManagerSales Manager 925.600.8571248.244.6423 Fax 925.600.8574Fax 248.244.3947 WiightM@bnpmelia.comObloyE@bnpmedia.com Midwest Roofer- www.mrca.org7'