A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq.
Intensive green roof cost per square foot.
Intensive systems allow the designer to create a park like setting so they are the best option for roof gardens that will be occupied.
Typically expect to spend 25 to 30 more to install a green roof than to install a traditional roof.
Annual maintenance for a green roof is typically higher than for a black roof by 0 21 to 0 31 per square foot.
On a large scale installations using sedum cuttings and 60 mm of grow medium it can be as low as 9 per sq.
8 to 20 per square foot.
For a conventional roof.
Ft including installation and plants.
They also estimated that annual maintenance costs of the two systems can range from 75 cents to 1 50 per square foot.
The installed cost premium for semi intensive green roofs ranges from 16 20 to 19 70 per square foot more compared to a conventional black roof.
They are fairly lightweight and can be installed on roofs with a pitch from 0º to 30º.
Usually green roof setups cost at least 30 per square foot while elaborate setups may cost as much as 200 per square foot.
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.
Green roof installation costs.
They consist of a thin layer of soil with continuous coverage of growing material.
Roofing cost per square foot when calculating roofing costs per square asphalt shingles run from 350 and 500 per square metal or tin roofs costs 600 to 1 200 per square and concrete or clay costs between 1 200 and 1 800 per square.
Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used.
15 to 50 per square foot.
In its life however it was estimated the green roof would save over 200 000 in 2006 energy prices with two thirds of that coming from reduced energy needs.
Based on these considerations recover green roofs has found that extensive roofs can cost about 10 to 50 per square foot while intensive roofs can cost from 20 to 200 per square foot.
If you are replacing your current roof add 125 to 500 per roofing square for old roof removal.
Costs vary greatly but an extensive green roof with 100mm of grow medium is commonly in the range of 13 to 16 per sq.
