Stone dust vs sand for laying pavers? Help!
My husband and neighbor are putting in patios --starting this weekend. They are doing it themselves, with the help of some other friends and neigbors. They are both very handy and very strong guys. They've rented a backhoe and compactor. The neighbor is laying brick; we're doing pavers for a 12' by 20' patio. The neighbor has decided, and convinced my husband, that rather than using sand and gravel for the base, they can use a product called stone dust. The ground under the patio is clay -- no topsoil at all, so it is very firm.
Is this a wise way to be doing this? Please answer ASAP -- thank you!