24 Jun Never Before Heard of Roof Cooling Ideas
Reducing Cooling Cost By Changing Your Roofing Material
Lets talk a bit about the different types of material used on a roof and some of the benefits of using them.
Image courtesy of Stock.xchng
One of the nice things about different material is that it can reflect the heat of the sun and make the house cooler on the inside. This will also reduce your electricity cost in the summer months, which will save you some money.
Coat The Shingles With Different Powders And Make Them a Lighter Color
One of the things that a researcher has done is to coat the shingles with different material to reflect the heat of the sun. It was an interesting experiment and seemed to work well enough for others in the neighborhood to try out.
The roof of a house can get pretty hot in the summer. Even if there is an insulated attic below, some of that heat can work its way into the living space. That can make air conditioners work harder and pump up electricity bills. But a thin, paint-like coating could help keep roofs cooler, a teen researcher finds. And in urban areas, widespread use of her new roofing treatment might even cut the formation of lung-irritating ozone on hot days.
Via: Keeping roofs cooler to cut energy costs
Shingles come in many colors, but dark ones are especially popular, says Jesseca Kusher. The 18-year old attends Spartanburg Day School in South Carolina. Like most dark objects, shingles absorb a lot of heat from sunlight. In the summer sun, they can easily reach 73.5° Celsius (164° Fahrenheit), she notes. If those shingles reflected more sunlight, they’d stay cooler. And that could help cut down on home cooling bills. According to the Environmental Protection Agency, air conditioning consumes about 5 percent of all the energy used in the United States. Cooling buildings costs the nation about $11 billion each year.
Via: Keeping roofs cooler to cut energy costs
Make Shingles Reflect More Light To Reduce Heat
So Jesseca looked into ways to make shingles reflect more light. She mixed tiny particles — a powder — made from any of several different substances into a clear paint-like coating. One coating got graphite, the same material in pencil lead. Another recipe included gypsum. That’s a soft mineral often found in the drywall used in construction. She even tried adding mica. That’s a mineral used in some lampshades. It readily breaks into small, glittering flakes.
Via: A simple paint-on coating might cut home energy use
She created several different powders that came in different colors and tested these samples. What she also did was to prepare some mixtures that did not have any color or powder, which would be her sample to say whether the mixture actually worked or not.
Used Different Colors
Jesseca used 4 different colored shingles to test her mixture on. She would paint her mixture onto each of the postage size samples and then would let them dry over night. She would then use a light source to simulate the sun and allow the samples to heat up for 15 minutes or until the untreated sample had reached the temperature of 73.5 degrees C.
The plain unpainted shingles got the hottest, while the treated shingles were about 30 degrees cooler than the untreated samples.
Trim Those Electric Bills
Besides trimming your electric bills, this will also keep your attic cooler. This was very interesting experiment and could possibly be something that we would look at more in the future.
Some Pros and Cons of Metal Roofs
Whether you’re putting a roof on a new home, or your existing roof requires a total makeover, there are many materials available. But no matter what roof style you have, metal roofs can be an attractive option because of their longevity, minimal maintenance, and eco-friendliness. And you can choose from tin, zinc, aluminum, copper, or galvanized steel – just make sure your metal roofing material is tested and labeled by UL, FM Global, or the equivalent.
Via: The Pros and Cons of Metal Roofs – Learning Center – State Farm
What Are the Advantages Of A Metal Roof
Energy Efficiency – A metal roof will reflect more heat, and can reduce cooling cost by 10%-25%
- Environmentally Friendly
Disadvantages of Metal Roofs
Despite their many advantages, metal roofs have some potential drawbacks Via: The Pros and Cons of Metal Roofs – Learning Center – State Farm
- Affordability – two or three times more expensive
- Noisiness – they can be noisy during heavy rain or hail.
- Expansion and Contraction
- Inconsistency of color match
- Performance – poor quality can cause serious damage
As you can see there are pros and cons to metal roofs. The one that we were really looking at was the pro about the roof reflecting the suns rays and in turn allowing things to be cooler.
Cool Roofing Solution
Public domain image from Pixabay
Sydney materials scientists are claiming a breakthrough in cool roof technology with a surface they’ve developed that will stay cooler than the ambient air temperature, even under the mid-summer Australian sun.
Via: A super cool roof solution to being hot in the city – Phys.org
There development has major implecations when it comes to cutting energy using “coated polymer stack”.
“Roofs heat up by absorbing sunlight, so darker roofs can get very hot. Even white roofs still absorb enough sunlight to warm up by 9 degrees Celsius to 12 degrees Celsius.
“This new surface, however, stayed 11 degrees or more colder than an existing state-of-the-art white roof nearby because it absorbs only 3 per cent of incident sunlight while simultaneously strongly radiating heat at infrared wavelengths that are not absorbed by the atmosphere.
“Furthermore the plastic materials used for the demonstration were available commercially and potentially suited to use on basic roofing.”
When using this type of technology you are also reducing what is called the “urban heat island”. This is when you take into account all the concrete and heat sources in a city.
This is a huge break thru in roofing technology. The benefit of cool roofs are not yet widely appreciated, but will be in the future for sure. Saving consumers money is what everything is about.