Why do slates come in selections?
Slate is a natural material, and as a result each slate is slightly different, in texture, thickness and flatness. Slate quarries now sort and grade slate by these three features into 3 grades, prime, commercial, & economy. The quality of each slate is the same, however the workability and appearance will reflect the selection as will the price.
SIGA Natural Slate has adopted a process with all the natural slate its sells to provide greater transparency to this process and to give you confidence no matter what quarry your slate comes from. All SIGA Natural Slates are categorised into three selections or ranges: Excellence, Commercial or Classic.
Find out more about how slate selection works and how you should choose the right slate for your project in our Knowledge Base post on Natural Slate Selection.