Building Maximizer Newsletter from Building Operating Management |
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BUILDING OWNER NEWSLETTER Welcome to another issue of "Where Metal REALLY Shines," an electronic newsletter for building owners and managers prepared by The Metal Initiative, a coalition of companies and trade associations formed to educate owners about the use and selection of metal roof and wall systems in commercial buildings. In this issue, we take a look at the benefits of installing a new metal roof over an old flat roof or an existing sloped metal roof. As you will see, the myriad of benefits to be gained by this type of retrofit enable a new metal roof to pay for itself quickly and to continue to generate a return on investment well into the future. New Sloped Metal Roof over an Old Flat Roof In most cases, this retrofit can be accomplished without having to remove the existing flat roof. It is achieved by simply installing a light gauge steel sub-framing system over the old roof. A new standing seam metal roof is then attached to the new framing system. A slope as low as 1/4" per foot is sufficient to satisfy most metal roof warranties. Adding slope to an existing flat roof can generate a strong return on investment in the form of lower energy costs and little or no maintenance for decades. Adding insulation in the cavity between the new sloped roof and the old flat roof, for example, can reduce the amount of energy required to heat and cool the building. New Sloped Metal Roof over an Existing Sloped Metal Roof This retrofit can also be accomplished without the expense and hassle of removing the original roof. It’s simply a matter of positioning light gauge structural members, notched to span over the original roof’s ribs, directly over the building’s existing framing system. New metal roof panels are then attached to the members. Once again, the cavity between the old and new roofs can be used to add insulation, which allows the retrofit to begin paying for itself quickly. The cavity also presents the opportunity to utilize natural convective cooling, which can reduce heat flow into the building up to 30%. More Information Available in New White Paper More detailed information regarding the benefits of installing a new metal roof over an old flat roof or an existing sloped metal roof is contained in a new TMI white paper titled "Stretching Your Roofing Dollars with Metal Retrofit."
Click here to visit The Metal Initiative website for more data, case studies, and other pertinent information about metal roofs and walls. Information courtesy The Metal Initiative |
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