Semi Intensive Green Roof Maintenance

Extensive roofs are thin lightweight roof systems that typically have a planting media measuring 6 to 20 cm deep while heavier thicker green roofs are known as intensive roofs and their growing media ranges in thickness from 20 cm to 100 cm.

Semi intensive green roof maintenance.

Semi intensive green roof heather with lavender the ideal system build up for blooming perennials and aromatic shrubs heather with lavender is a simple intensive green roof system and allows for the inclusion of various perennials and aromatic shrubs in the plant selection. 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. This system requires some maintenance from time to time these green roof systems lie between the extensive and the intensive and usually include a mix of plant types. Semi intensive green roof a semi intensive green roof system is characterized by small herbaceous plants ground covers grasses and small shrubs requiring moderate maintenance and occasional irrigation a typical growing medium depth for a semi intensive green roof is 6 to 12 inches.

However maintenance requirements are generally no more than would be expected for sidewalk planters. Most semi intensive or intensive green roofs are designed with aesthetic appeal or the functionality of normal garden or recreational area which will dictate a more intensive maintenance regime as would be required in most gardens. Semi intensive green roofs require a bit more maintenance since the plants tend to need pruning irrigation and fertilization. 15 to 50 per square foot.

8 to 20 per square foot. This system is able to retain more stormwater than an extensive system and. Semi intensive green roofs include features of both. They are usually accessible.

If the roof is occupied additional maintenance should be accounted for to make sure the roof is safe and comfortable. Thus they have more substantial structural loads and need more frequent maintenance and watering. Semi intensive green roofs. 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.

Once established they will continue to develop to create a self sustaining plant community on the roof that will also provide habitat for invertebrates and bird species. Semi intensive green roofs as their name states are a combination of the aforementioned two types. Semi intensive green roofs are low maintenance. Semi intensive roofs and intensive green roofs.

Intensive green roofs have more soil and a deeper growing medium sometimes several feet that can support a more diverse plant selection including small trees.