Core Drive 40-30 is a cellular gravel grid with a high quality weed membrane (50gsm) heat-welded to the underside. This make it DDA compliant and completely porous.
Designed to be installed on flat, domestic surfaces, this is a cost-effective option. Grids butt-up together and are in a large format 1600 x 1200mm size for quick installation.
Suitable for angular aggregates up to 20mm. The high density polyethylene material means it is both durable and flexible. Cells are 30mm deep and 40mm wide. The grid is supplied as a folded unit of two panels (800 x 1200mm) heat welded to the same membrane (1600 x 1200mm = 1.92m2).
Do you want to install a decorative aggregate driveway on top of an existing hard surface like tarmac? You can do this using Core Drive grids. Just make sure you have a level surface, install a layer of sand and use edges to retain your chosen aggregate.