Duro-Last Cool Zone Roof System

Duro-Last Cool Zone Roof System

Why Cool Roofing?

The ancient Greeks knew a lot about art, philosophy poetry - and keeping cool. It wasn't just the togas. Greek builders understood that buildings constructed with light-colored materials stayed cooler.

And the basic properties of light and heat haven't changed. People still wear white clothing to stay cooler in hot climates - because white reflects the sun's energy, while black absorbs it.

So why continue to pay the price - in higher energy and maintenance costs - for that black roof on your building?

If you're thinking about a cool roof, you need to understand the basics. Like how much of the sun's energy a white roof reflects, and how long the reflectivity lasts.

Duro-Last invites you to find out how an energy-efficient roofing system can save you time, energy, and money.

Duro-Last Cool Zone™ roof system starts out with 87% reflectivity - and is the only single-ply membrane rated by the EPA Energy Star Products Program that has retained reflectivity of greater than 85% after three years of weathering. This high retained reflectivity, combined with proven durability and virtually maintenance-free performance, can save energy and money for building owners and provide a competitive solution for roofing contractors.

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Duro-Last Cool Zone Roofing System

When it comes to purchasing a roofing system, there are any factors that need to be reviewed. Some building owners want a system that is aesthetically pleasing; others look for durability. Some want a system that not only prevents leaks but also provides excellent warranty coverage. Still others determine which roofing system will offer the most energy efficient benefits to them and the environment around them. This is a very important attribute to review.

Roofs make up much of the heat-retaining surface in populated areas. In some highly concentrated areas, as much as 27% of the land cover is roof surface. This can cause an "urban heat island" - a region where the temperatures can be several degrees warmer than the surrounding countryside.

Buildings with dark roof surfaces get hotter and stay hot longer. Air conditioners must work harder to maintain comfort for occupants, demands not only on building owners for the cost of electricity, but also on power companies that supply the energy. A reflective roofing system can keep a building cooler and save money in air conditioning costs.

There is even a benefit for buildings that are not air conditioned, because a reflective roof will keep a building cooler and more comfortable for occupants. Moreover, there is an environmental benefit by reducing the surface area that creates heat islands. Cities such as Sacramento, Atlanta, Baton Rouge, Chicago, and Salt Lake City have already made significant strides in reducing their heat islands through the planting of trees, replacing dark pavements with lighter surfaces, and most importantly, providing incentives for building owners to utilize cool roof technology.

Studies also suggest that reflective roof surfaces reduce the damage that a roof sustains from the effects of the sun. This can also make a roof last longer.

The Energy Star® Roof Products Program (sponsored by the Environmental Protection Agency) provides guidance for consumers in selecting a roofing product that suits their needs, as well as a list of products that meet the qualifications established for cool roofing products. This qualifying products list identifies low-slope roof products that have an initial reflectance of at least 65% and a reflectance of at least 50% after three years of weathering. In addition, the list supplies warranty information and company contacts.

There are several types of cool roofing products on the market. Some provide a short-term means to help keep a building cool, while others keep buildings cool AND provide a long-term waterproofing solution. the Duro-Last Cool Zone Roofing System, is the only single-ply membrane recognized by the Energy Star Roof Products Program as retaining over 86% reflectivity after three years of weathering. Additionally, because 80-85% of every Duro-Last roof is pre-manufactured in our controlled factory environment, rooftop seaming is minimized, making every installation virtually leak-proof. Prefabrication also means that there is very little waste involved during installation. That means less material going to landfills and congesting our environment with waste. Furthermore, some roofing manufacturers, including Duro-Last, support environmentally-friendly efforts by recycling scrap and trim.

To determine the most cost-effective solution to you roofing problems, look at the alternatives in terms of how they will fit your building's needs. Do you have high energy costs that you need to get under control? Do you have a roofing system that is failing and needs repair or replacement? How have previous roofing systems performed? What is the track record of the products chosen as potential roofing alternatives? When it comes to technology and experience in the cool roofing arena, has the supplier done its homework? Is the product proven? Can the supplier provide real world examples of energy savings and performance? All of these questions need to be answered to properly identify which roofing system will work best for your building needs.

Energy Savings. Long-term watertight protection. Environmental responsibility. Not every roofing system will deliver all these benefits. The Cool Zone Roofing System does. Before you invest in a roofing solution, research every type of system --- weigh the benefits and COMPARE! It will pay in the long-run


Discussions of building “sustainability” often go directly to those aspects that impact energy efficiency. While this is one of the most important aspects of sustainable design, there is much more to sustaining the built environment.

Sustainability considerations should include the impacts of products and designs throughout the lifecycle and the entire supply chain. This means considering such issues as productivity gains, lifecycle cost savings, maintenance, adaptive reuse, destruction and recycling, and overall environmental soundness.

The Duro-Last Cool Zone Roofing System gets the green light from start to finish.

The energy savings are obvious. Testing by the Lawrence Berkeley National Laboratory shows that the Duro-Last Cool Zone white membrane exhibits a solar reflectance of over 86%. This means that buildings with a Cool Zone roof will stay cooler, requiring less insulation and a reduced cooling load. Keeping buildings cooler in urban areas can help minimize the effects of urban heat islands. Negative impacts from pollution and strained energy supplies are minimized. Significant lifecycle cost savings can offset and exceed initial installation investments.

Productivity gains are recognized up and down the supply chain due to the efficiencies and opportunities that are captured. The Cool Zone membrane uses fewer hydrocarbons during manufacturing than many other roofing products. And with almost 100% recycling of trim and scrap materials generated during fabrication, virtually no processing by-products reach the landfill. In fact, recycling of process components has spawned another sustainable product produced by the Duro-Last family of companies: vinyl flooring made by Oscoda Plastics, Inc.

Designing for durability and adaptability can maximize the longevity of a building project. Specifying durable materials and assembling them to prevent premature decay of the structure means more time before eventual destruction and disposal of building wastes. Designing for ease of maintenance can also increase the lifetime of a building. The Duro-Last System has been successfully installed in applications that have far exceeded 20 years. This, in addition to the minimal maintenance requirements of a Duro-Last roof, means that the roof system will be an integral part of a sustainable building.

Minimizing environmental impacts during both installation and removal is also a key criteria for sustainable building design. The Cool Zone roof system does not require kettles or special spraying equipment that can be messy, emit objectionable fumes or pose fire hazards. And the pre-design/pre-fabrication characteristics of the system lead to very little material waste by installers, so jobsites stay cleaner,and dumpsters and landfills fill up less often.

Selection of an appropriate roof system is a critical element in the design of sustainable buildings. Reputable roof system manufacturers should be willing to help in the analysis and selection of the proper system for the job. Education and training in the basics of roof system selection and sustainable roof design is available from Duro-Last Roofing, Inc. As a Registered Passport Provider with the AIA Continuing Education System, Duro-Last Roofing, Inc. provides training that qualifies for AIA Health, Safety, and Welfare credit. Call Drew Ballensky at 877-556-6700 or see our programs on the AIA Web page at www.aia.org

Duro-Last Roofing, Inc
525 Morley Drive
Saginaw, MI 48601
Tel: (800) 248-0280
Fax: (800) 432-9331
E-mail: Information@duro-last.com
Web site: http://www.duro-last.com