The big advantage is that the insulation shield can be completely finished. Thanks to the optimized screw diameter there is a minimum of point transmittance in the thermal bridge. Depending on the situation 0.0035 to 0.0045 W/K. In addition, the system requires only one hole of 10.0 mm in the building materials and in the understructure. Toproc F : Benefits: With the newly developed zinc nickel coating the Toproc F facade screw reaches a salt spray resistance of more than 700 hours.These values of Toproc-F outperform conventional systems by far -and make a plastic shell completely unnecessary. Resume: only one drill diameter,high quality zinc nickel coating for increased corrosion resistance,Powerful anchoring,Multifunction anchor for various building materials (brick,concrete,aerated concrete), Minimum of losses in the thermal bridge,quick allignment of understructure,correction of tolerances in the facade is possible.