Intensive Vs Extensive Green Roof System

15 to 50 per square foot.

Intensive vs extensive green roof system.

Extensive green roof systems extensive systems are simpler and lighter weight than intensive systems. This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value. For a conventional roof. Extensive green roofs.

Due to their light weight and low profile they require less structural support and can be used on roofs with a slope of 30 b0 and higher. Green roofs can help reduce energy costs for a building by acting as another layer of insulation between the inside and outside of the roof. Green roof insulation becomes more of a factor on new build commercial projects with intensive roof systems. Mosses sedums herbs and low growing grasses are common choices for extensive roofs.

8 to 20 per square foot. These systems are ideal for efficient stormwater. You want to ensure that any roofing insulation is compatible with green roofs. Typically these roofs will have more soil and some small shrubs as well as the low growing wildflowers and sedums found on an extensive roof.

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. These systems range in thickness from 2 6 94 and weigh approximately 15 30lbs per sq ft. Semi intensive roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses. Our semi intensive green roof systems include a richer deeper substrate and drainage solution compared to extensive roofs enabling use of a wider range of complex plant mixtures.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. There are no specific requirements for a green roof insulation layer in a simple extensive green roof.