Green Roof Weight Per Square Foot

Extensive green roofs are relatively light at 15 50 pounds 7 23 kilograms per square foot.

Green roof weight per square foot.

Installing a green roof starts at around 10 per square foot for simpler extensive roofing and 25 per square foot for. Approximately 12 pounds per square foot what it is. They are typically constructed in layers but can also be installed using a tray system. Semi intensive systems generally weigh between 25 and 40 pounds per square foot when dry.

Medium depth green roofs that usually use more substantial grasses perennials or smaller shrubs. 6 12 and the entire system has a saturated weight of less than 40 lbs. The roof must also be capable of bearing the weight of a garden. Green roof cost per square foot.

Per square foot average being about 30 lbs. Semi intensive green roofs require a bit more maintenance since the plants tend to need pruning irrigation and fertilization. The soil or grow media substrate layer is usually 150mm to 300 mm. 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.