Does the Stormbloc® Infiltration System require stone fill on the base and sides?
A. Stormbloc® should be laid onto a firm sub-base consisting of 150 mm of sand or gravel. Other than this there is no requirement for stone fill to the sides. Due to the high void ratio and open construction within the blocks water can move freely in all directions, as such all surfaces of the system will be utilised for infiltration into the ground.
