Homeowners are always in the look for possible cuts on energy expenses as well as giving their home’s components the longest life span, that’s why reflective roof coating has become such a popular and energy efficient option among homeowners. It does keep your roof from absorbing heat and can also keep a house’s roof protected.
The reflective roof coats, also called cool roofing, come in a variety of colors to choose from as well as many thickness levels, depending on those characteristics they’ll be more or less energy efficient and protective, but how really does it work?
The mechanics behind reflective roof coats
Mainly, there are two ways in which reflective roof coats act over your roof to improve its function:
- Solar Reflectance
Cool roofing adds solar reflectance to your roof which, as you may imagine, is the ability to reflect the sunlight, hitting on your roof, away from its structure, meaning that it will cool things off.
- Thermal emittance
Keeping sunlight away does cool your roof, but still there’s plenty of heat that will be absorbed, that’s where cool roofing’s thermal emittance materials have a role. What that thermal emittance layer does is radiate the absorbed heat back into the atmosphere instead of into your house.
How does reflective roof coats save energy?
Is a fact that a house’s roof covers the whole structure of the house, meaning that a reflective roof coating will have a significant role in energy costs, and it’s worth considering if you want to save some bucks, however, there are plenty of aspects that will make reflective roof coating more or less efficient.
From the coating you choose, the local climate and use of air conditionate to the home’s shape and energy efficiency it will all have an impact on how well cool roofing will work. Even so, for houses in hot climate areas that mostly experience sunny days through the year, it will always translate into energy saving.
For those cases where a home is mostly exposed to hot weather, you will be saving up to 70% in energy bills, which means that you will be getting from 20% to 70% of your investment back while making your house cooler and more comfortable.
What to consider when shopping reflective roof coats
The main differences between reflective roof coatings are the colors you have to choose from, though it can make a huge difference, for example, white coating is capable of reflecting from 50% to 90% of the sunlight and heat received: while the highly reflective coating, which color is an aluminum painting coating like, comes in second place, ranging from 60% to 70% of reflectance levels.
That’s why homeowners should keep in mind performance over look. But even if a less effective color coating is chosen it will reflect from 15% to 35% of the sunlight and that’s better than having no sunlight reflection at all.
Reflective roof coating application
Applying reflective roof coating to your roof is a DIY friendly project, even so, projects that require walking on the roof are dangerous, and sometimes they are better left to professionals. Another way of applying reflective roof coating is using roofing material that have reflecting coating already applied, so when your roof is set it will be protected right way.
There are many ways to improve the energy efficiency of your house, if you really want to have an energy efficient home you should consider talking to a contractor about other projects such improving the insulation of the attic, installing reflective attic insulation as well as improving the ventilation of the attic, those added to the reflective roof coat will surely improve your efficiency ratings.