Sempergreen® Lightweight System

£44.86 ex VAT /m2

The Sempergreen® Lightweight sedum green roof system is the perfect solution to creating a flat green roof. This unique system can be used on flat roofs, up to 150, the substrate is made from a 40mm substrate made from long mineral wool fibres.  There are 6 – 8 different species of hardy succulents, each chosen for their ability to absorb and retain water and they to thrive in adverse weather conditions.  From initial installation they provide up to 95% coverage.



Read more about installing the Sempergreen® lightweight system here


The (minimum) maintenance depends on the build-up of the system, we recommend you fertilise twice a year with a long-acting fertiliser.

Read more about maintaining you green roof here

Key facts

Lightweight and Super Lightweight Sedum Systems are:

Ideal for:
Flat roof extensions, garden offices where weight bearing capacity is unknown
Structure: 3 layers to install, Drainage layer, Substrate layer, Sedum vegetation layer
Weight: 40-50kg/m2 saturated
Cost: Super Lightweight £37.00 per m2
Lightweight  £44.86 per m2
Ease of install: EASY **



Coverage: 95%
Dry Weight: TBC
Saturated Weight: Approx. 45-50kg/m2
Thickness: 60 – 70 mm
Maximum roll length: 20m – 25m
Number of m2 in a pallet: Max. 50m (for standard sizes)
Pallet Size: 130cm x 110 cm