Owing to its strategic position, roofs can influence how hot or cold a house gets. This has led to energy conservation measures targeting the roof. Increasingly, there is a shift towards energy star roofing materials i.e. roofing materials that are energy efficient.
The standard roofing material absorbs a lot of the heat since it only reflects 5-15% sunlight. Heat is absorbed into the house and registered as increased temperature in the house. This prompts the intervention of the home cooling system to restore normalcy.
An undesirable eventuality cool roofs (energy efficient roofs) reverse.
Designed to reflect most of the heat from the sun (over 65%), cool roofs absorb less heat. Heat gain is very minimal hence the interior temperatures are not significantly altered. This makes it very energy efficient as it does not strain the home’s heating and cooling systems.
The whole essence of energy efficient roofing is to somewhat maintain the status quo. To prevent as much as possible the exterior conditions altering the internal temperature conditions.
Benefits of energy efficient roofs.
- Lower energy bills.
- Increased comfort in the home.
- Less demand on the HVAC system increasing its usability period.
- Increased durability of the roof since high level of heat absorbed tends to weaken it over time.
- Enhances the efficiency of attic insulation.
Types of energy efficient roofs.
Cool roofs come in various forms. Different manufacturers use different methods to ensure the roofs are very energy efficient.
Some use coloring. The use of brighter colors on the roof as opposed to the traditional dark colors. The underlying principle is that bright colors are better reflectors thus reflect most of the heat from the sun.
Coloring can be done on virtually any kind of roofing, be tiles it tiles/ clay, concrete or metals. Additionally, other components of the roof like shingles and barriers can also be painted in bright colors to further enhance energy efficiency.
Coating is another method used. The standard roofing is coated with materials that enhance energy efficiency. Steel and aluminum are some of the materials used in coating.
Coating is mostly applied on metallic roofing material. Also, coating has been used in asphalt shingles. The top surface is covered by tiny granules of different colors. These granules enhance the capacity of the shingle to reflect and emit light.
Coating can only be done before the roof is installed on the house. But there is a way you can indirectly coat a roof that has been installed. This is by properly insulating the area under the roof, the attic. It achieves a good measure of energy efficiency.
Apart from coloring and coating, there is another efficient roofing form that makes use roof design to enhance energy efficiency. The focus is not on the material constituting the roof as such but how the roof is positioned on the house.
The mind behind it is that the angle the roof is positioned greatly determines the level of reflection. And to achieve maximum energy efficiency, the levels of refection must be maximized.
Energy efficiency is the way to go. A good roofing done by a roofer Dublin company ensures you have just that. If your current roofing is not energy star, upgrade it to be a cool roof. If you are planning to construct a house, ensure the roofing material you use is energy star.