Cost of the green roof build up for a 10 8 flat roof is less than 420 00 enviromat offer discounts on large areas and for trade customers.
Is a green roof expensive.
From that study they concluded that the green roof would cost 464 000 whereas a conventional roof would only cost 335 000.
Here are the main factors that affect the cost of a green roof.
They consist of a thin layer of soil with continuous coverage of growing material.
They are fairly lightweight and can be installed on roofs with a pitch from 0º to 30º.
However those researchers did determine that the green roof would save an additional 200 000 over its lifetime.
A large scale green roof on top of an exclusive new york condo might cost hundreds of thousands of dollars whereas the small garden you have on your garage may have cost as little as 400 if you have done it yourself.