Becoming an eco-friendly or green facility is no longer just a hype or a trend, it has become a necessity. Green facilities emit fewer and even almost zero greenhouse gas emissions compared to conventional facilities. Their carbon footprint is low. Green facilities do their part in saving the planet, even the people living in the building carry on their daily activities within themselves.
Eco-friendly facilities adopt sustainable methods and use only materials that have a low environmental impact, such as green coatings on walls and floors and cool roof coatings on roofs. The cool roofs block the sun's heat from entering the facility. Cool roofing coatings have a reflective finish that hops off the sun UV rays.
Energy Efficiency in Green Roofs
Cool roof coatings are important to make roofs look green. Roofs are exposed to the heat of the sun during the day, creating the heat absorbed by a simple roof membrane. These coatings prevent solar radiation from entering the facility's interior spaces. With less heat entering the interior, the building achieves a more comfortable internal temperature despite the external heat.
With tolerable temperatures in the interiors of the facility, mechanical cooling and heating systems do not have to work as hard to maintain a comfortable temperature. When these systems do less work, the facility's energy costs are also lower.
One of the distinguishing features of a green facility is that it consumes very little energy costs. The green facility should be able to maintain a comfortable living space like any other common facility, without costing a fortune on energy bills. Conventional energy use translates into electricity consumption. Electricity is generated by burning fossil fuels such as coal and petrol. This method of energy production results in the harmful increase of fossil-fuel by-products in the atmosphere in the form of greenhouse gas emissions.
Electricity is expensive due to the high cost of fossil fuels, and its manufacture is contributing to global warming and climate change. With warmer climates, urban and congested areas are prone to the heat-island effect, which is increased heat retention in a given area. Such temperature changes can create intense heat waves and reduce air quality and the general ecosystem. The cool roofs make it possible for the facilities to maintain a comfortable space despite this heat-island effect and promote energy savings at the same time.
Energy Saving Cool Roof Coatings
The most distinctive feature of these coatings is their ability to reflect sunlight. Cool roofs mostly come in lighter colours, which are further Solar Reflective Paint.
Non-green roofs can be converted into cool roofs with spray-application of polyurethane-based reflective coatings. Cool roof coatings have good adhesion to older surfaces and work on asphalt- and bitumen-based roofs. They also have the ability to flex or elongate, especially on acrylic- or silicone-based coatings. This prevents the paint from cracking when the surface expands and contracts due to temperature changes.
Nanotechnology has made it possible for infrared reflective (IR) coatings that reflect sunlight and still allow for darker roof coatings. Furthering the envelope are cool roof coatings with hollow ceramics that act as an effective heat barrier.
Cool roof coatings are fast becoming the best solution for mitigating the effects of global warming and climate change with low energy costs.