GSB is the perfect sub-base for areas that intend to take bear heavy loads. GSB is a 40mm to dust making it easy to compact, used as a base for roads, driveways, car parks and buildings. Can also be used as a topper on drive ways where there is already a base down.

Weight Approx (KG)	1000
Size	0 to 40mm
Applications	Sub bases, Concrete

Please be aware that there may be a slight variation in the size, shape and colour of this material as it is a naturally quarried product.