The Solarstell Connect raising block can be used on a flat roof with gravel. By raising the base element you only have to scoop away the gravel underneath the foot, instead of underneath the entire element!
The raising block is placed directly on the roof surface, between the gravel. The Solarstell Connect foot (supplied with the base element) fits onto it perfectly, so it cannot shift.
It is made from old car tyres, which makes it fully circular.
Solarstell CONNECT mounting plan