What Color is your roof?
Roof color is a traditional red brick, blue, black, dark green, and others. Very rarely do we see the white roof. For any buildings with no mortar used to follow the color gray.
It turned out for us who live in the tropics and hot, white roofs can reduce air conditioning usage by 20%. State of California in the United States even require that all new buildings, since 2005, white roof, for a flat roof surfaces or applicable.
Surface of the roof covering on average 25% of the entire surface of the city. Meanwhile, the streets covered approximately 35% of the entire surface of the city. According to research from Hashem Akbari, a researcher from the Heat Island Group, when 100 cities in the world to replace the roof with a white color, and also streets with more materials reflect light, such as concrete roads than asphalt roads, the global cooling effect generated would be enormous.
My own experience is to paint the roof of my house with materials made from asbestos Insultec whose licenses have been produced in Indonesia, a white base color (though can order any color) which is the most effective colors to reflect sunlight back. Cat-based insultec water has the ability to reflect ultraviolet light up to 85% and reduce the heat to the roof of 47%. The roof of this cooler will automatically make the interior cooler.
My house is located in North Jakarta with the very hot air so that the temperature in a room without air conditioning can reach 34 degrees Celsius. With insultec, room temperature can fall to 4 degrees Celsius. This alone is very felt, because when I used to go upstairs is hot and stuffy, although it is not cold, not hot as before. Any ceiling feels colder now so automatic room below too cool. Work with paint is also very easy because no need to change or replace the roof of any kind, just stay in the paint, wait 3-4 hours, after a dry immediately felt.
Using examples insultec only because according to Hasheem, without mention of white paint brand will produce a similar effect and continue to help global warming.
Let’s try together. More and more the more effective is also a white roof for a green world.