Sedum Roof Weight

Weight of standard sedum roof.

Sedum roof weight.

In addition the weight also depends on the water buffering capacity of the drainage layer. Sedum roofs with a natural drainage layer are designed to maximize water retention while sedum roofs with a synthetic drainage layer may focus more on minimizing weight. Typically the total depth of the green roof would be 85 100mm 12 20mm drainage layer 70mm of substrate and have a saturated weight of approx. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system.

Plugs or cuttings for plant material weight. Individual complete modules are installed quickly and have a 90 fully grown sedum layer for instant greening. Here s a guide comparing types. So in dry state 50 m2 traditional green roof weighs around 5 tons while a similar sized urbanscape roof weighs just 1 ton.

Scale this up and a 1 000 m2 traditional green roof space requires 100 tons of material to be brought on the roof and the urbanscape version only 20 tons and can be called a light weight green roof. The thicker the substrate layer the greater the weight of the total roof structure. A variety of hardy sedums both native and non native. When sedum vegetation is applied to a green roof the weight is approximately 30 kg m2.

A standard sedum roof has a saturated weight of about 80 kg m. In addition the weight also depends on the water buffering capacity of the drainage layer. Low weight can be crucial for huge building structures and retrofit projects with limited roof loads. Weight of standard sedum roof.

A standard sedum roof has a saturated weight of about 80 kg m. Extensive built up. If necessary this weight can be reduced to approximately 40 kg m for roofs that can only bear a lightweight green roof system. Add 2 5 lbs ft2 for sedum mats and tiles system depth dry weight saturated weight 5 25 media depth 17 22 lbs ft2 29 34 lbs ft2 6 media depth 19 25 lbs ft2 33 39 lbs ft2.

Roughly speaking extensive green roofs have a substrate thickness of between 4 and 15 cm and a weight of 30 to 220 kilo per m2. These provide aesthetic interest and diversity. The weight of a green roof is one of a number of factors specifiers need to consider when deciding which roofing system to use. The thicker the substrate layer the greater the weight of the total roof structure.