Green Roof Embodied Energy

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Green roof embodied energy. By comparison a cool roof on this building will save about 700 btus per square foot per year. This value is equivalent to 6448 g c m 2 which is significantly greater than 378 g c m 2. Both sod roofs and lwa based lightweight aggregates roofs have been found to have a negative impact on the quality of their resulting runoff. With energy costs continuing to rise the popularity of green roofing systems is also on the rise.

Structural insulated panels sips are one of the most airtight and well insulated building systems available making them an inherently green product. According to the us dept of energy the average american household releases about 2 tons of carbon dioxide into the atmosphere as energy is consumed each year. Our one square foot patch of green roof will save about 1 000 btus per year in cooling energy which means that it will take about 40 years to recover the process embodied energy of the green roof. This is the reason for oldroyd s xv green membrane which incorporates a centre layer of recycled plastic so reducing the embodied energy.

Concrete has a lower embodied energy but greater toxicity in its emissions. Cooler than cool roofs. An airtight sip building will use less energy to heat and cool allow for better control over indoor environmental conditions and reduce construction waste. It has also been reported that homeowners spend upwards of 11 billion dollars a year to.

The main pollution issues with steel roofing are the dioxins produced during smelting and the pollutants produced in the manufacture of the usual pvc. The embodied energy for green roof components are 23 6 kg m 2 5 pounds per square foot co 2 of green roof. 71 73 compared to clay tile or concrete roof covers through ongoing encouragement of recycling strategies and increased local recycling facilities able to embrace residual cradle to cradle material reuse. From residential homes commercial buildings hotels and resorts schools and non profit organizations green retrofits designs energy solutions to reduce energy usage before producing renewable energy.

However when you do the sums you find that the waterproof membrane beneath the living roof may well contain the same embodied energy as the tiles because of the high energy oil based material it is made of.