Stone Mastic Asphalt is ideal for access roads, car parks and industrial sites where a much more robust surface than tarmac is required to withstand use by heavy traffic. In the road surfacing industry, the term stone mastic asphalt is normally shortened to SMA.
A typical SMA installation is comprised of several layers including a stone sub-base, intermediary layer, binder coarse and a final wearing layer of stone mastic asphalt.
However, the intended use of a area of SMA will determine its exact specification and this will be prepared by an architect or other experienced professional. This is to ensure that the finished surface can cope with the traffic it is intended to be used for.