Acoustics

If additional requirements are imposed on the acoustics of a building, the profiled roof and facade sheets and structural liner rays can be provided with a perforation pattern. You can of course also order perforation if you are mainly concerned with the aesthetic properties. If you opt for perforation, keep in mind that the permissible load and deflection will change. Many SAB perforated sheets are provided with an embossing to roll away perforation stresses in the material.

With perforated material it is important that the products are transported dry and stored correctly on the construction site. If water remains in the perforation due to rain or condensation, corrosion will occur. Especially with thicker material, the zinc layer is not sufficient for sufficient cathodic protection. The corrosion is often superficial, easy to clean and the process will stop after installation. However, this often leads to questions from clients. So also bear this in mind if you have organised your own transport from the factory.

Perforation

SAB supplies two standard perforated patterns: Perfo 3 and Perfo 4 (perforation of 23,4% and 11,7%). For larger quantities, however, SAB can offer and supply some conceivable perforation pattern.