In the early stages of metal roofing, corrugated tin and steel metal roofs lasted for less than five years. The reason: both materials did not interact well with air moisture and rain. The accelerated rusting and corrosion made homeowners outside London ON during the time believe it to be a bad investment. That was until heat reflective paint for metal roofs became a huge part of improving metal roofs.
This membrane does what its name describes: reflect UV rays and heat off your corrugated or standing seam metal roof. This is fortunate because most metal roofs are dark colored, which enable them to absorb more heat than they should. A bright-colored reflective paint is a great solution. For its advantages, take a look at Rawlins Paints and Coatings' discussion below.
Why Should You Use Heat Reflective Paint for Metal Roofs?
Well, let us tell you what it is first. Reflective paints reduce solar heat gain on darker coloured roofs. Because of the dark colour, roofing can absorb heat causing you problems in the future. By reducing the roof temperatures on a property, in summer you’ll find that you don’t spend as much money on air-con. You’ll be saving energy which is always a benefit!
You should use a paint such as Blackfriar Professional Solar Reflective Paint on a dark roof. This paint can be used on stable felt, bitumen, metal, concrete, brick and more roof surfaces, so it’s extremely versatile. After you use this paint, you’ll be left with a white, water-based finish that will give your roof solar reflectivity. It’s the ideal product to use if you want to add solar reflectivity to a new roof.
This special paint will reflect the sunlight that falls on the roof and disperse the heat from the roof. It can also help you to resist surface fungal growth, that’s two in one! If you really love a two in one, this is a self-priming two coat system as well. (Continued)
You might say: my metal roof has a light color because it's aluminum. Unfortunately, aluminum and copper are both the highest conductors of heat. True enough, steel and bronze are the poorest, but they will still absorb huge heat amounts over time. This heat will dissipate into your property leaving it hotter than ever.
If you'd like to know more about metal and heat conductivity to make a wise decision about your heat reflective paint for metal roofs investment, learn more from Metal Supermarkets' post below.
Heat Reflective Paints for Metal Roofs: Metal Thermal Conductivity
Thermal conductivity measures the ability of a metal to conduct heat. This property varies across different types of metal and is important to consider in applications where high operating temperatures are common.
In pure metals, thermal conductivity stays roughly the same with increases in temperature. However in alloys the thermal conductivity increases with temperature.
Which Metals Conduct Heat The Best?
Common metals ranked by thermal conductivity Rank Metal Thermal Conductivity [BTU/(hr·ft⋅°F)] 1 Copper 223 2 Aluminum 118 3 Brass 64 4 Steel 17 5 Bronze 15 As you can see, out of the more common metals, copper and aluminum have the highest thermal conductivity while steel and bronze have the lowest. Heat conductivity is a very important property when deciding which metal to use for a specific application. As copper is an excellent conductor of heat, it’s good for heat exchangers, heat sinks, and even saucepan bottoms. Because steel is a poor conductor of heat, it’s good for high-temperature environments like airplane engines. (Continued)
Is it expensive to use heat reflective paint for metal roofs. You'd be surprised: it's not as expensive as most think. In fact, it's cheaper than owning an asphalt shingle roof. The costs you'll encounter are the same as the amount you'll spend repainting your house walls and property fences. They typically cost about $0.50 to $1.50 per square foot inclusive of labor.
We have to admit it adds up above the metal roofing installation and materials you already paid for. However, for the sake of a long-lasting and home-cooling contributor, it's definitely worth spending for. Networx has a great breakdown of both costs and efficiency of heat reflective paint for metal roofs.
How much do reflective coatings cost?
Reflective coatings typically cost $0.75 to $1.50 per square foot, including labor, according to the Environmental Protection Agency. Of course, you can save money by carefully installing the coatings yourself.The coatings should last at least 10 years, and can extend the life of the roof. Look for Energy Star-labeled products, which have been tested long-term. The low-slope roof products are guaranteed to reflect at least 65 percent of the sun’s heat upon installation, and at year 50 percent after three years. Energy Star-rated steep-slope products have at least 25 percent reflectance upon installation, and 15 percent after three years.
How effective are the coatings?
Tests at the Lawrence Berkeley National Laboratory have shown that reflective coatings can cut energy costs for summer cooling by 25 to 67 percent. The greatest changes were seen on buildings with lightly insulated roofs. Uncoated bitumen or tar-and-gravel roofing can reach 200 degrees Fahrenheit in the summer, but a coating will keep surface temperatures before 135 degrees.
The Lawrence Laboratory tests show the best products reflect up to 85 percent of solar heat, and only cause a 9-degree temperature increase in direct sunlight.
This adds up to significant energy savings and increased comfort, plus further savings by extending the life of a roof. (Continued)
Remember, heat reflective paint for metal roofs perform best if a reliable roofer from London ON has installed the metal roof efficiently. If you have yet to find a reliable roofer, you can count on Cub Roofing to help. We have decades of experience fulfilling satisfying metal roofing installations across Ontario. Learn more today by calling us now!
Read More Here: All About Heat Reflective Paint for Metal Roofs in London ON
Cub Roofing
352 Talbot St
London, ON N6A 2R6
226-779-3531
No comments:
Post a Comment