The RTV 13 regulation establishes very stringent fire safety parameters for ventilated facades , penalizing the use of plastic or composite materials. Porcelain stoneware ventilated facades naturally meet these requirements because stoneware is an inorganic and inert material, certified as a Class A1 non-combustible material. External architectural stoneware cladding does not fuel flames in any way and does not contribute to the spread of fire.
