Do Cool Roofs work?
On a hot summer day, at noon, a typical horizontal surface receives approximately 1000 watts of sunlight per square meter. That is a lot of generated heat. Cool roofing systems have been designed and built with materials that reflect more sunlight, therefore, it absorbs less heat than the typical, standard roof. The material options of cool roofing systems could be:
- highly reflective paint
- sheet covering
- highly reflective shingles or tiles
Saving money is one of the biggest cool roof benefits, ask any homeowner that pays the energy bills every month! What kind of savings do cool roof systems provide though? According to research, experts say you can save anywhere from 10 percent up to 30 percent on your energy expenses. This, of course, can vary based on individual living habits and situations.
Some determining factors for that energy savings include:
- Climate conditions
- The capacity and efficiency of your HVAC system
- The square footage of your home or business
- The insulation levels
- The utility rates you’re paying
- Proper installation
- The roof slope
How much energy does a cool roof save?
When it comes to cooling your home, builders that install cool roofing systems say that you can save as much as 15% or more on your energy bill while keeping your home up to 50% cooler. Cool roofing systems save money in other areas besides the monthly bills. There are incentives and rebates to be had and with less need for cooling more, you can downsize your HVAC system next time. The roof of your home will last longer than the traditional roofing system.
In place of having cool roofing systems installed, when it comes to cool coating for a roof for traditional roofing systems, in states like California, Florida, and Texas where the summers are high heat, they can reduce your energy use up to as much as 30%. However, while cool coating the roof helps individual homes, this “paint” type product is not doing the environment any good. This creates a reflective surface that reduces area cloudiness and leads to increased sunny conditions. For a densely populated area, this can speed up global warming.
How long do cool roofs last?
It is very little, in some cases, no maintenance required with cool roofing systems. As far as how long they last, cool roofing systems have a longer lifespan than conventional, traditional roofing styles.
What color roof is the coolest?
It is common knowledge that heat is absorbed more in dark traditional cool roofing, and white is more reflective. Research has found that a dark gray roof raises the solar reflectance by as much as20 percent, but a weathered white color roof raises that reflectance up to 55 percent, which can reduce a home’s cooling energy use by 20 percent.
What color roof is most energy-efficient?
While a new roof is exciting and you can revamp your home’s appearance, you also know that you’re going to have to live with it for the next 20 years or longer. When you’re choosing a new roof style and color, there are many factors to be considered, besides the budget. Today, energy efficiency is right up there with the initial cost of a new roof.
So, where do you begin with this new roof choice? The climate. Where do you live? If you live in an area that has hot summers, going with the cool roofing systems that are available today. With the lighter color, you’ll lower the attic temperature by as much as 40 degrees during the summer months. However, if you live in an area that the weather tends to be on the cooler side, a dark color will absorb more heat for you and keep your home warmer while melting ice and snow off the roof faster.
Additional Notes of Cool Roofing Systems
Is there a benefit to having a cool roof and waterproofing systems? Yes! If you can go with one of the cool roofing systems, you’re helping your energy bills while keeping your home comfortable year-round. By adding a waterproofing system, you’re making your roof more resilient to the climate if the area you live in has any amount of rainfall. This may not be a benefit for the dessert, but areas with a higher amount of rainfall could benefit from waterproofing.
Maybe you’re wondering which is better cool roof vs green roof systems? Bother offer advantages and disadvantages, and both offer great options. Cool roofs have proven to be a viable option with materials that reflect the sun’s heat through light-colors. However, a green roof helps stabilize the air above to near ambient temperature. A green roof will give you a garden area where you can reap the benefits of products grown there, a source of food if needed.
When it comes down to the decision, it has to be a personal decision that fits your budget. By making choices that you can afford that will help your own energy savings and the environment are both pluses we can all appreciate. Call (412) 227-8488 today for your cool roof installation in Pittsburgh, PA.