Hi, where using k-rend wet dash on this new build and have applied this k-rend sbr and base coat to block at the mo which is all fine. Yesterday we applied the dash receiver and then dashed with the k-rend rough cast! We turned up this morning and what we have dashed seems to have lots of very small like hair line cracks all over it. What is the cause of this please before we carry on! We mix base coat and dash receiver in big tubs with mixing drill on the scaf, and the rough cast gets mixed in the mixer for about half hour and applied to the receiver straight away when it comes out the mixer!!!