What are the differences between 3/4″ (2cm) and 1 1/4″ (3cm) slab material for countertops?
There is no difference in the durability of one thickness over the other. The choice of thickness is a personal preference. The cost of the 2cm material is less, but the labour is more because the most of the edges require lamination for the edge (to build it up). The cost for 3cm material is more, but the cost for labour is less because laminating the edge is not required since it is already thicker.