We can replicate the natural oxidised appearance of copper patina using our polyester powder coating process. This natural evolution of texture and colour requires patience and can be a tedious process if you wish to achieve the desired effect straight away. This can take up to twenty years or more. This changes the distinctive “bright” original copper finish to a chestnut brown, which gradually darkens over several years to a chocolate brown.Įventually, a film of green copper salts will appear on top of the oxide layer.

The first stage of the patination process occurs only a few days after the metal is exposed to the atmosphere and it begins to oxidise. The extent of humidity and the level of sulphur-related air pollution have a significant impact on how fast the patina develops. Patina refers to a chemical process that causes natural discolouration or fading over a period of time. The patina effect is achieved by using a Polyester Powder Coated finish, which imitates the appearance and textures of this natural process. This natural development of copper is one of the metals unique characteristics and sets it aside from the common cityscape surroundings. When exposed to sulphur and oxide compounds, copper starts to corrode forming a blue/green patina surface. Our products are engineered specifically for architectural fabrication.Ĭoloured cladding panels bring a compelling aesthetic to a building’s facade. Metalline is at the forefront of aluminium rainscreen cladding and insulated panel production in the UK. Unit 25 Cambridge Science Park – Cambridge.3 Glass Wharf, Temple Quarter – Bristol.Ultima A1 & A2 Fire Rated Insulated Spandrel Panels.

Patina metal finish tile