Green Roof Weight Per Square Foot

Semi intensive green roofs require a bit more maintenance since the plants tend to need pruning irrigation and fertilization.

Green roof weight per square foot.

They are typically constructed in layers but can also be installed using a tray system. Installing a green roof costs between 10 and 30 per square foot most homeowners pay within this range but costs could run up to 50 per square foot while not common for residential roofs some designs end up costing 200 or more per square foot. 6 12 and the entire system has a saturated weight of less than 40 lbs. Per square foot average being about 30 lbs.

The roof must also be capable of bearing the weight of a garden. The foot or more of growing medium needed for an intensive green roof creates a load of 80 150 pounds 36 68 kilograms per square foot. The soil or grow media substrate layer is usually 150mm to 300 mm. Medium depth green roofs that usually use more substantial grasses perennials or smaller shrubs.

Green roof cost per square foot. The lite system is typically used on retrofit projects when the roof is engineered with only 15 to 17 pounds per sf for the green roof component. Semi intensive systems generally weigh between 25 and 40 pounds per square foot when dry. Approximately 12 pounds per square foot what it is.