FAQ

What is a green roof?
A green roof, also known as a vegetated roof, garden roof, living roof, or eco-roof, is a multi-layered roof system that is installed above a watertight human-made structure. Inhabitect’s team has been involved with over 1,000 green roof applications in North America within the last 14 years. 
 
How much does a green roof cost?
The cost of a green roof will vary depending on the design, the type of system specified, project location, maintenance regime, expectations of the owner, the overall growing media (soil) depth, plant choices and many others.  Because of the numerous variables involved Inhabitect asks that you contact us directly for budget pricing on the green roof you have in mind. We have the knowledge to provide an economical and high quality green roof application. 
 
Do green roofs leak?
A high quality green roof should be installed over a high quality waterproofing membrane. If done correctly a green roof should increase the life span of your waterproofing, not interfere with its performance. Inhabitect is aligned with the top waterproofing manufacturers in the industry and can assist you with writing both waterproofing and green roofing specifications. 
 
How much does a green roof weigh?
A standard Extensive green roof assembly (shallow media depth) will weigh around 18-36 lbs/sf and an Intensive (deep media depth) assembly will weigh at least 34 lbs/sf at full saturation. 
 
Can a green roof be installed on a sloped roof?
Yes, there are specialized green roof assemblies that can be used to install vegetation on almost any slope. Inhabitect’s team has played a role in the installation of a green roof that measures 81 degrees of slope! 
What is the difference between retention and detention?

Retention is the process of permanently keeping storm water from leaving a property. It can be accomplished through infiltration, evaporation, transpiration (water uptake through plants) or water reuse. This process helps to remove volumes of storm water from your storm and sewer system.

Detention is the process of temporarily storing storm water to mitigate sewer over flows. This process helps reduce the flow rate (volume per unit time) of storm water through the sewer system and off of your site. This storm water is later released into the system after the rainfall event or storm melt subsides. This delay has major benefits to any sites storm water design.

Do you have a question?

Contact us at info@inhabitect.com for an answer.