Baghdad concrete building roof
Google earth satellite picture of a roof in Baghdad, Iraq, coated with 20 mils/0.5mm of TC Ceramic white. The roof is a concrete roof. Before the roof was coated with TC Ceramic, the air conditioning electrical panel was measured for two hours, from 1300 to 1500 hours.
Two days after the roof was coated with TC Ceramic white, the air conditioning system electrical panel was again between 1300 and 1500 hours. The difference was a reduction of 63% of electricity used to power the air conditioning system.
In 2004, all power for this building was provided by a large generator which was fueled by a separate fuel tank. Before the roof being coated with TC Ceramic, the fuel tank would last two days. After coating the roof with TC Ceramic, the fuel tank lasted three days. A 50% reduction in fuel consumption.
High angle picture of the Baghdad concrete building roof.
Note: it is important to also coat the insides for the parapets, otherwise they will transmit significant energy into the building, reducing the benefits of coating the roof.
Notice the air conditioning ducting on the roof of the building is coated.
Before coating the ducting, the ducting, insulated with conventional insulation, was so hot because of the high solar heat, 180F/83C, the air conditioning system could barely keep the building comfortable.
Also note in the page 7 picture all of the hand rails for stair and ladders are also coated for personnel protection. Before coating the rails, you had to be wearing gloves to keep from burning your hands on the hand rails.
Roof top water tanks coated with 40 mils/1.0mm thickness of TC Ceramic White.
Before coating the tanks with TC Ceramic, the water coming out of the cold water tap inside the building, was 130F/55C.
After coating the water tanks, the water coming out of the cold water tap inside the building was 80F/27C. Before coating the cold water was too hot to drink and too hot to use to take a shower.
Infra red picture taken on a roof being coated in Albequerque, NM, in the month of May, to block solar heat through the roof.
See coated sections at 103F/40C and uncoated section at 130F/55C, with another section of the roof showing coated sections at 91F/33C and uncoated section at 124F/51C. Even the snake/zigzag coated section is cooler.
Reduction of solar gain through the roof can save energy between 20% and 60% depending upon the roof and the configuration of the building