Green Roof Maintenance Costs

Cost of green roof vs conventional roof.

Green roof maintenance costs. Your roof should be inspected regularly to make sure that it holds the weight of the green roof properly with no moisture problems or leaks. In this project we got so much benefit out of this secret garden for the master suite along with all of these environmental benefits that the residents were excited to embrace. This includes removing weeds carried by the wind and applying fertilizer several times a year. 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.

They estimate that extensive green roof systems cost about 10 per square foot and intensive systems cost around 25 per square foot. Something like a biodiversity or brown roof may require more ongoing maintenance than other kinds of installation. The plants will not be damaged by walking on them when conducting this maintenance. Maintenance costs are based on a maintenance team day rate number of visits per year location and accessibility of the roof area.

Cost benefit evaluation of ecoroofs 2008 pdf 37 pp 2 1 mb about pdf this report attempts to quantify the private and public costs and benefits of green roofs or ecoroofs in portland oregon. Primary green roof costs are related to installation and maintenance. Annual maintenance of green roofs costs from 21 cents to 31 cents more per square foot per year than maintenance of a black roof. They also estimated that annual maintenance costs of the two systems can range from 75 cents to 1 50 per square foot.

For an intensive roof annual maintenance costs range from 1 to 1 50 per square foot. White roofs typically need more maintenance than black roofs as they must be kept free from debris to continue to reflect solar radiation as expected. Ecoroofs are expected to be an important part of the city s urban strategy as it grows and density increases in the decades to come. They are strong enough to be able to compensate for this.

As a very rough indication in the us one can expect to pay around 150 per meter squared of extensive green roof and around 200 per meter squared for the intensive variety. Gsa s green roof report estimated that green roofs on commercial and public buildings provide a payback based on 50 year average annual savings of about 6 2 years nationally internal rate of return of 5 2 and an roi of 224 based on a net present value of 2 7 square foot.