Road base is similar to cracker dust. However, road base contains a larger blue metal aggregate. The aggregate makes road base a very firm base when compacted. Some information on the web suggests using road base underneath your layer of cracker dust if you plan on parking on or driving over your artificial grass. If your top layer of cracker dust is 50-100mm deep, the 150mm u-shape turf pegs used to secure the edges of the grass will reach the layer of road base. The pegs can not be hammered into road base due to the aggregate and will bend.
Can I use Road Base instead of cracker dust, or under my cracker dust?
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