Green Roof Embodied Energy

Structural insulated panels sips are one of the most airtight and well insulated building systems available making them an inherently green product.

Green roof embodied energy.

Concrete has a lower embodied energy but greater toxicity in its emissions. By comparison a cool roof on this building will save about 700 btus per square foot per year. The embodied energy for green roof components are 23 6 kg m 2 5 pounds per square foot co 2 of green roof. 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.

Both sod roofs and lwa based lightweight aggregates roofs have been found to have a negative impact on the quality of their resulting runoff. Cooler than cool roofs. With energy costs continuing to rise the popularity of green roofing systems is also on the rise. 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.

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. Findings confirm that a sheet metal roof can obtain significant carbon and embodied energy saving benefits i e. 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.

Though the embodied energy is high there are few toxicity issues involved in the manufacture of clay tiles. This value is equivalent to 6448 g c m 2 which is significantly greater than 378 g c m 2. An airtight sip building will use less energy to heat and cool allow for better control over indoor environmental conditions and reduce construction waste. This is the reason for oldroyd s xv green membrane which incorporates a centre layer of recycled plastic so reducing the embodied energy.

The government s 2 billion green homes grant is potentially harmful because it does not consider embodied carbon according to john robertson architects sustainability chief colin beattie made the comments during a live panel discussion about the aj s retrofirst campaign and efforts to champion the re use of existing buildings held.