Generally using a system that needs supporting skin structure presents the following pros and cons. It allows the use lower class material not exposed to the clean areas, thus reducing costs. In case of scratches or wall chipping low class material exposed to the environment

Carbon Steel: in most cases galvanized carbon steel is used

Advantages:

• Low cost
• It allows for Class A fire certification
• Good mechanical stability

Negatives:

• In case of scratches lower class material exposed to the clean area
• In case of scratches contact with water and cleaning agents may lead to rust and corrosion
• Difficult to handle for modifications on site
• Difficult to handle for flush built accessories and covings

HPL 3 mm: high-pressure laminate impregnated with phe-nolic resins; generally used as supporting structure for Stainless steel or PVC coating

Advantages:

• Consistency with the use of HPL 4 mm for integration with door and coving profiles used in other areas
• Good mechanical stability

Negatives:

• High cost