Tarmac supplies Type 1 sub-base to clause 803 of the Specification for Highway Works throughout its recycling business.
Any construction application requiring a firm sub-base needs Type 1. The load-bearing function and capacity of even a 100mm sub-base should not be underestimated.
![Image](https://uploadstarmaccom.blob.core.windows.net/uploads/2020/09/recycled-type-1.jpg)