Environmental Design + Construction - January 2009 - (Page 30)

SPOTLIGHT DOW ROOFING SYSTEMS Solve Metal Roof Problems Once and For All with a Dow Roofing Systems TPO Metal Retrofit System. cally fastened directly to the supporting purlins using a specially designed, self-tapping purlin fastener and seam plate. Maximum Seam Strength All Dow Roofing Systems membranes are heat weldable. Heat welding has long been recognized as the strongest, most reliable seaming method in the single-ply roofing industry. Literally fusing the materials together, hot-air welding creates one homogeneous bond that can be made stronger than the membrane itself. Hot-air welded Stevens EP membranes can be: ■ Up to three times stronger than butyl tape seams. ■ Significantly faster and less expensive to install than adhesive or taped seams. So more of your roofing investment goes into materials that stay on the roof, rather than into the labor to install the system. In addition, Stevens EP does not contain plasticizers and therefore does not suffer any of the problems associated with plasticizer migration or membrane shrinkage. All Dow Roofing Systems membranes are manufactured in an ISO-9001-certified facility and Stevens EP membranes meet the ASTM 6878-03 specification for TPO-based roofing material. A variety of membrane color options are available from Dow Roofing Systems. Consult your Dow Roofing Systems representative for colors, minimum order sizes, availability and delivery. For more information on Dow Roofing Systems membranes, systems and our NO-COMPROMISE Roofing Challenge contact us at 1-877-TPO-ROOF or www.no-compromise-roofing.com Like everything in life, your metal building’s roof is going to get tired, old and worn. It happens to them all. Over time, Mother Nature’s destructive forces combined with long-term UV exposure and continuous expansion and contraction has left your metal roof rusty, leaking and deteriorating. When this happens, a technicallyadvanced roof from Dow Roofing Systems will provide your building with a fresh new look, provide energy efficiency, and help it to give you many more years of service life. The Stevens EP Metal Retrofit System is based on a proprietary thermoplastic polyolefin (TPO) formulation. As the leading manufacturer of reinforced TPO roofing membranes, Dow Roofing Systems engineered a durable, light-weight roofing system specifically for retrofitting tired, aging, metal roof decks regardless of whether it is a standing seam, flat seam, or corrugated metal roof. 1 From the deck up, we start with an approved polyisocyanurate, extruded or expanded polystyrene insulation that has been cut to fit in the flutes of the existing metal roof deck. This material is loose-laid between the standing seams of the existing roof deck, providing additional R-value to the building as well as structural support for the insulation that will be installed over the top. 2 Next, we mechanically attach a cover board or insulation board over the top to provide a uniform and flat substrate for the roofing membrane. We can provide polyisocyanurate, extruded or expanded polystyrene insulation, in thicknesses ranging from 1 to 4-in. (25.4-mm, 101.6-mm) depending on your specific R-value and energy savings requirements. 3 Last, the TPO is installed over the insulation and mechani- 30 ed+c J A N UA R Y 09 http://www.no-compromise-roofing.com

Table of Contents Feed for the Digital Edition of Environmental Design + Construction - January 2009

Environmental Design + Construction - January 2009 Contents Web TOC Editor's Note Newsline New + Notable Civic Responsibility Readers’ Choice Awards Success Story 2009 Manufacturer Spotlights Feeling Right at Home Marketplace + Classifieds Advertiser's Index Parting Shot

Environmental Design + Construction - January 2009

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