The Renewable Energy Hub Forum

Renewable Energy => Green Roofs => Topic started by: Zarostulus on November 24, 2015, 07:42:02 PM

Title: What is the point of green roofs?
Post by: Zarostulus on November 24, 2015, 07:42:02 PM
I mean, sure they look nice, but they're expensive as hell and it's not like trees create electricity or anything?
Title: Re: What is the point of green roofs?
Post by: St Rhenium on November 24, 2015, 08:27:55 PM
Well, firstly, some people also call roofs with solar panels etc green roofs - and they definitely create electricity ;)

In terms of actual greenery though, there is a positive effect on air pollution. Plants use co2 and expel o2, which is great. Green roofs also cool buildings in hot climates, and prevent excess rain run-off in wet climates.
Title: Re: What is the point of green roofs?
Post by: LucidEnergy on November 25, 2015, 12:09:11 AM
I wondered this too actually, but I hadn't considered the effect of cooling the building, which would save quite a significant amount of energy, especially in arid climates where power guzzling A/C in commonplace.

At the end of the day, it's better than nothing even if the benefits are small.