Here are the main factors that affect the cost of a green roof.
Is a green roof expensive.
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.
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.
However those researchers did determine that the green roof would save an additional 200 000 over its lifetime.
However they point out that green roofs can be considerably less expensive up to 50 cheaper when they cover more than 10 000 square feet because of economies of scale.
An extensive green roof is the most common and least expensive type of green roof with costs ranging from 10 20 a square foot 2.
The epa estimates that the cost of installing a green roof starts at around 10 per square foot for simpler extensive roofing and 25 per square foot for intensive roofs.