Rockwool Prock Roof Panel - Insulating Roof Panel is a premium rockwool sandwich roof panel, a new generation building material, composed of two faces of super durable 4-layer coated steel from Bluescope (Australia) and Rockwool main core on modern European technology continuous production line. Design of 3 to 5 corrugated waves and diverse depth, delicate and aesthetic; the surface is smooth or delicately ribbed with flexible length exactly cut according to design.