Today we will talk about case study conducted by a home owner in California, USA about energy saving efficiency of metal roof over the concrete tile. Determining the energy efficiency of a roof is a not an exact science and other factors can have an effect on the building’s efficiency: windows, doors, attic insulation as well as the number of people in the home. There are also external factors such as air temperature and humidity.
A study on roof identifies the benefits of offsetting a roofing product from the deck. In its study, a counter-batten/batten installation method was used. The airspace created between the roofing material and the deck increases the airflow across the deck and assists in pulling heated air away from the conditioned space. Less heated air in the attic equates to less stress on the cooling system and lower energy consumption.
The homeowner summarizing the number of kilowatt hours used during the five hottest months in Northern California: June, July, August, September and October. Some variables were noted by the homeowner throughout the four years the number of children at home over the course of the summer and instances of humidity. After reviewing the average daily temperature during the months of the years in question, it was noted overall the temperature was consistent with only a couple of outlying temperatures in 2006 and 2009.
With this said, the average number of kilowatt hours used in 2006 from June to October, when the concrete tile roof was installed, was 941. The stone coated steel tile roof was installed in 2007 and the average number of kilowatt hours used in 2007 was 748, in 2008 was 833 and in 2009 was 810. During this time, there has been a 15% lower use of kilowatt hours for 2007 through 2009, than were used in 2006.
This is not an exact science, nor is it a study conducted by scientists, it is just one homeowner looking to cut his energy use by switching to a metal roof a stone coated steel roof. With consumers focusing on reducing energy costs, stone coated steel is a great choice for the homeowner. In addition to being energy efficient, stone coated steel has upwards of 25 percent post-consumer recycled steel, is easy to use with rain catch and solar panel systems, has a long life cycle and is low maintenance. All of these characteristics and benefits add up to an enduring, sustainable, roof.