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Bindiya

August 03, 2025 14:55

Is Green roof considered low or high Albedo roof?

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  Galchenko12 August 04, 2025 17:25

  Green roof is considered HIGH albedo (average 0.7-0.8).

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  lyfian0924 August 22, 2025 21:43 (Edited August 23, 2025 20:25)

  Green roof has low albedo, because the grass with soil has low reflective value. But green roof is also strategy to reduce heat island effect, because of the evaporation effect. 

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  lyfian0924 August 22, 2025 21:45

  if you go through the LEED heat island effect calculation, you can find the green roof is excluded to meet the reflective value (because it can't have a higher than 0.29 reflective value), but it can still be counted to the area that meet the credit's requirement. Because it helps through another way

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  saharnazarkarde September 09, 2025 01:05

  Plants and lawns have low albedo, but they are low in conductivity as well. In general, green roof is a good strategy for lowering the heat island effect. 

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  Galchenko12 September 09, 2025 14:58

  Green roof is considered to have a HIGH ALBEDO. It also depends on the type of vegetation. If the vegetation is selected correctly, the green roof albedo is between 70 and 85 percent. Green roof albedo is DYNAMIC and also depends on some different factors such as soil moisture, LEAF ANGLES and shapes (this is why the type of the green roof vegetations is a deciding factor). 

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