What Is Cool Metal Roofing Definition & Uses
Cool metal roofing is defined as painted or coated metal products that reflect the suns energy to dissipate heat. Cool roofs help to reduce the heat that is transferred into the building, which can result in total cooling cost energy savings ranging from 7% to 15%, according to the Green Building Alliance.
In fact, cool metal roofing doesnt have anything to do with the metal substrate itself its solely dependent on the paint or coating system that is applied to the substrate during the manufacturing process. The cool metal roofing paint/resin formula contains innovative solar reflective pigments, which is the key differentiator.
A Cool Metal Roof Arizona Style
The styrofoam inside our new shingles plus the reflectivity of the light-colored aluminum seem to be providing a worthwhile benefit. Our electricity usage dropped by a whopping 20% this year compared to the same months in previous years even though the average temperature is 2.5 degrees higher this year and our thermostat setting is 1 degree lower than last year. The roof is definitely making a significant difference in our electric bill.
I didnt expect the roof to have any impact on our electric bill because we previously had wood shake shingles, which provide pretty good insulation and low conductivity of heat. Also, the 20% reduction in our power bill probably means that our new aluminum roof is reducing our A/C costs by about 40% because we have five pool motors that account for about half of our power usage.
-David P. of Phoenix AZ
Is A Metal Roof Cooler Than Shingles Keeping Your Home Cool
No doubt, when living in a southern climate like Huntsville youll want a roof that does more than just provide shelter. A quality roof is what makes a home feel safe, secure and comfortable. When choosing between a metal or shingle room youll want to select a roofing material that will insulate and protect from the harsh summer heat. Ultimately, choosing a roof material that is cooler is of primary importance.
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Are Metal Roofs Energy Efficient Attic Temperature
How can a metal roof help us control your attic temperature? One way of controlling heat gain is by installing a metal roof system with paint that contains infrared-reflecting pigments. The infrared-reflecting pigments lower the attic temperatures in two ways. The first way is by initially reflecting some of the sun’s energy from the invisible spectrum. The most noticeable example of this method is when you try to look at a shiny object a sunny day and the glare is nearly blinding. The second way infrared-reflecting pigments work is by their ability to release some of the heat that isn’t initially reflected. A good example of this is when you touch a metal object thats been sitting in the hot sun. Depending on the color, and whether the object is painted with infrared-reflecting pigments, some metal seems hotter than others.
Finding Cool Roofing Products
Cool roof qualifications, such as minimum values of solar reflectance and thermal emittance, vary by standard or program, location, building type, and roof slope. Therefore, there is no single definition of a cool roof. However, the Rated Products Directory of the Cool Roof Rating Council reports the solar reflectance and thermal emittance of thousands of roofing products.
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Metal Roofing: Is It Energy
When it comes to energy efficiency, metal roofing can surpass all other types of roofing. Metal roof protects your home from elements such as heat and cold. Apart from this, the material durability of a metal roof is unmatchable. Since its considered to be one of the most energy-efficient options available, you might be surprised to know how much you can save in the long run. It not only provides excellent results in the cold season of the year but also reflects the sunlight and keeps the home energy costs down. Contact a roof repair specialist to learn more about metal roofing.
Is Metal Roofing Energy
by Mountaintop Metal Roofing | Oct 1, 2020 | Residential
There are lots of great reasons to install metal roofing. But one that tends to get overlooked is the energy-efficient capabilities of metal roofing. Is metal roofing energy-efficient? You bet it is.
So first, the most common reasons why people invest in metal roofing products: its longevity, overall cost-savings, and beauty, which can be customized in many different ways. Its also virtually maintenance-free.
Plus, here in the Pacific Northwest, we get all sorts of weather. Rain, naturally, but also surprisingly high winds . We have super warm and dry summers followed by months of rain in all its many varieties: drippy, droopy, freezing, icy. We get snow from time to time, too.
While all this is happening, your roof bears the brunt not just of the weather itself but of the things associated with it: moss, mold, tree droppings, ice dams, and more.
Even the highest quality composite shingles can struggle to maintain their appearance and function in the midst of such a cavalcade of dramatic atmospherics.
Enter Mountaintop Metal Roofing. We install aluminum roofing shingles and panels that last through all kinds of weather and for many years to come.
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Solar Reflectance Index Definition & Uses
Solar Reflectance Index is a measure of a surfaces ability to reflect the suns solar energy and emit heat . SRI is measured on a scale from 0 to 100. An SRI value closer to 0 indicates a darker or black surface and a value closer to 100 indicated a brighter or white surface.
SRI is a little more complicated to define because its measured using a complex formula that includes more than just the solar reflectance and emissivity values:
However, to make it easier, the where you can input the solar reflectance and emissivity values, and it will calculate it for you.
One of the more critical measures of building sustainability is referred to as LEED, the Leadership in Energy and Environmental Design. LEED is a building rating system available for nearly all building and home projects that provides the framework for businesses, contractors, and property owners to follow to be recognized as sustainable. SRI values are used in determining if a building material is LEED compliant.
Minimum SRI for Cool Roof Materials in LEED v4:
How Is Metal Roofing Energy
A lot of metal roofings energy efficiency comes down to how the roof is installed. A study funded by the U.S. Department of Energy found that the system used to attach metal roofinga batten/counter-batten systemallows for airflow underneath which decreases the flow of heat. Since the roof is not directly nailed to the roof deck, the air gaps act like insulation and prevent heat transfer out of the home. The air gaps also help in the summer by preventing the heat of the sun from warming up the rest of the home. In fact, the researchers found that with a metal roof, the flow of heat decreased by 45%, causing a 25% reduction in cooling expenses.
Even unpainted metal roofs reflect heat better than asphalt shingles. Pre-painted and solar reflective coated metal roofing products also reflect solar radiation effectively, and the color you choose to paint your metal roof can make it even more energy-efficient. The most energy-efficient metal roof color is anything in a light shade. Lighter colored metal roofs reflect more heat than darker colored metal roofs, reducing your energy costs in warmer months.
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What Makes A Roof Energy Efficient
According to GreenBuildingAlliance.org, 90% of roofs in the United States are poorly designed and built with dark, non-reflective materials that absorb rather than reflect heat.
Rooftop temperatures can get 90 to 100 degrees hotter than the outside air temperature. With a dark, heat-absorbing roof, this heat transfers into your attic and, ultimately, your home.
While good insulation offers some relief, it doesnt stop the transference of heat from the roof top to the attic. And when your attic is overheated, that excess heat will transfer into your home and make the A/C work harder than it should.
Two factors impact a roofs ability to stop this transference of heat: solar reflectance and ventilation.
Good For The Environment And Your Wallet
Metal is one of the most energy efficient roofing materials available and can save your home up to 40% in energy costs and provide excellent insulation during the winter. The secret to metal roofing’s energy savings is in its variety of finishes. The basic, unpainted metal roof will reflect more solar radiation than an asphalt roof, which absorbs and holds heat. For homes in warmer climates, pre-painted or granular coated metal roofing systems reflect solar energy and cool your home by re-emitting most of what solar radiation is absorbed. A highly reflective and highly emissive painted or granular-coated metal roof is optimal for reducing energy consumption and can actually re-emit up to 90% of absorbed solar radiation.
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Is Metal Roofing Energy Efficient
Metal roofing is no longer the corrugated tin roofing you imagine covering makeshift sheds or chicken coops its a durable, reliable, and energy-efficient roofing solution. Made with stainless steel, aluminum, and copper, metal roofs of today can fit all housing and commercial needs. For homeowners who are interested in the aesthetic value of a new roof, metal roofing offers a wide variety of styles and colors to choose from. For those more curious about saving energy, theyll be happy to know that metal roofing delivers here as well.
Why Metal Roofing Is Best For The Winter Season
Winter is almost upon us, but its not too late to get your roof replaced with metal roofing in Tinley Park, IL. In addition to its longevity metal roofing lasts much longer than most roofing materials. It also offers the best defense against extreme cold weather. Here are reasons why its the ideal roofing for winter.
Advantages of Metal Roofing
Our Metal Roofing Options
For more information on our Dyer roofing options, call Rogers Roofing today at 768-3022 or fill out our contact form for a free, no obligation consultation.
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Why Are Classic Roofs So Energy Efficient
Reflectivity: Our Kynar 500® and Hylar 5000® coatings incorporate our advanced hI-R Heat Barrier technology to create a roof that keeps your home naturally cooler thanks to special reflective pigments. The complex chemical structure of these pigments reflects the infrared portion of the suns rays that is most responsible for heat gain. A hI-R Classic roof leaves the attic space and the entire home much cooler in the summer. Proud owners of Classic roofs report saving up to 20% or more on their energy costs.
Emissivity: Compared to most other roofing materials available today, Aluminum roofing has a high emissivity. High emissivity means it does not retain absorbed heat for a long time.
The Importance Of Ventilation And Insulation
When it comes to energy-efficient roofing, the roof itself isnt the only part of your home that makes an impact. Youll also want to inspect your ventilation and insulation.
The goal of ventilation is to properly manage airflow in your home. If a roof is poorly ventilated, it can make your attic or crawlspace feel extremely hot in the summer or cold in the winter. This can also lead to excessive moisture build up during cooler months. Not only can this impact your utility usage and energy costs, it can cause damage to the roof or shorten its lifespan.
Poor insulation can have similar impacts on your home and energy costs, as youll need to run HVAC systems longer to maintain comfort.
Homeowners will also want to consider above sheathing ventilation , primarily in tile roof installations, to help reduce energy costs. ASV is an air space located between the roof tiles and the roof sheathing. This space reduces heat transfer and allows excess heat to dissipate.
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What Is The Most Energy Efficient Roofing Material
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When youre responsible for making the most out of your commercial space, you should consider one aspect of savings that many in your shoes dont energy efficient roofing. Energy efficient roofing is roofing that cuts down on the consumption of energy by the structure underneath, and cool roofing, as energy efficient roofing is often called, can have a surprising impact on your savings. The three-pronged effect you will see is lower energy bills, new tax savings, and less of a carbon footprint.
Utilizing the most modern roofing materials doesnt limit you as to what type of roof you can build, but in actuality, it gives you more choices regarding the cost range and the aesthetics and features you are in the market for. What is the most energy efficient roofing material? Lets examine some energy efficient roofing options and see what you think.
Are Metal Roofs Energy Efficient Energy Efficient Paint Pigments
Well, now that you know what I know, you might be surprised to hear that many consumers who are interested in installing the most energy efficient color on their house tend to choose bare finished Galvalume®. Thats because they associate its reflectivity properties with its energy efficiency. However, despite Galvalume® being very reflective, it lacks the ability to release stored heat back into the atmosphere once it heats up. So, for comparison, lets take white for example. Its the most energy efficient color. Compared to a white metal roof that reflects and releases up to 59% of the sun’s heat, a Galvalume® roof only reflects and releases 25%. If you like the beauty of a metal roof and are considering one for your home, hopefully this article will help you understand a little more about how metal roofs, painted with infrared-reflective pigments work.
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Lower Your Energy Bills With A Metal Roof
Whether you are building a new home or business or just doing a little remodeling, youre likely to be overwhelmed by all the choices you need to make in selecting colors, materials and finishes. A metal roof can be a great choice because it lowers a buildings heat gain through its roof, saving money on cooling costs.
Since metal roofing is sustainable and environmentally friendly, it can qualify for LEED points, tax credits, and homeowners insurance discounts. This is because of the energy efficiency, high recycled content, long life span, and fire resistance ratings of Central States metal roofing products. Central States roofing products come in a wide range of emissivity and solar reflectivity values perfect for any environment.
Central States cool metal roofing products are an excellent choice for those looking to install a sustainable, energy efficient roof.
Is A Metal Roof More Energy Efficient Than Shingle Roofing
Metal is one of the most energy efficient options available. A metal roof more energy efficient than asphalt shingles. Homeowners can experience greater energy efficiency and a lower cost of living by replacing their roof with a metal roof. Not only will they notice an immediate difference, but theyll also save money on energy bills long after the installation has been completed. Not only does metal roofing provide excellent insulation during the cold season of the year, but metal materials also reflect sunlight, helping keep energy costs of the home down 40-50 percent during warmer months.
Asphalt shingles trap heat from the sun, absorbing it into the home and increasing indoor temperature by up to 25 degrees. As asphalt shingles are exposed to direct sunlight and other weather elements, they weaken, curl and rip. This inhibits their ability to protect your home from damage, whereas metal roofs are far more resistant to weather elements and last a lot longer than asphalt shingle roofing.
Metal roofs, however, reflect light and heat since they have such a low thermal mass keeping heat outside of your home or building, which can save your home energy costs. Metal roofs also can be up to 100 degrees cooler on their surface than asphalt shingle roofing.
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Are Black Metal Roofs Less Energy Efficient Than Lighter Colors
Tuesday, May 22nd, 2018
A black standing seam metal roof has a unique charm to it and that look can work with tons of home styles and match with just about any siding option.
We know that darker colors tend to absorb more heat than lighter colors, so how does this work in the summer? Will your black metal roof absorb more heat and make the house hotter?
Lets talk about it.
Do Black Standing Seam Metal Roofs Make Your House Hotter in the Summer?
Based on my research, a black metal roof does have the potential to absorb more heat in the summer, but there are a lot of factors to consider. For one, wed have to look at your roofs insulation and ventilation. The longer the roof is exposed to direct sunlight, the more heat it absorbs and the more likely it is to transfer that heat. With insulation, you can prevent a lot of that heat from passing into the attic and with ventilation, you can help to manage the heat.
Also, if we avoid direct contact with the roof, the metal roof will have less of a chance to transfer heat through the rood. Typically, spacing the metal roof ¼ to 1 should reduce the amount of heat that transfers into the home.
Have more questions or interested in a totally free estimate on a metal roof? Give ou experts a call today.