How is patina formed?
Depending on the gases contained in the air it comes into contact with, the climate and the location of the building, the light gray colored patina forms within 6 months to 2 years. Patina on the zinc surface is a natural reaction to basic constituents in the atmosphere, where water is also present. It consists of two stages:
– When zinc comes into contact with water (moisture, H2O), it reacts with oxygen, forming a “zinc hydroxide” layer on the surface.
– Zinc hydroxide reacts with the carbon dioxide (CO2) in the air and the patina itself forms the “hydroxy carbonate” layer. The patina is tightly bound to zinc, its texture is natural and durable, and it does not dissolve in water. Therefore, it protects the zinc and slows down the interaction of the air in the atmosphere with the substances it contains.
Longevity Zinc is naturally resistant to corrosion but also self-protects by developing a patina that provides exceptional longevity. Due to 1 µm/year atmospheric corrosion, 0.70 mm thick rolled zinc will live for 70 years under minimum conditions and even 120 years depending on the environment. It is considered as the material of the future due to its long service life and no need for maintenance and repair.
Minimum maintenance
ÇATISAN includes systems that best protect the building against atmospheric conditions such as rain, sun and wind. It is the most reliable, long-lasting roof and facade coating material thanks to its waterproof and fasteners and soldering performance. Thanks to its long life, titanium zinc (titanium and copper alloy zinc) is a very low maintenance material. All the products that Catisan uses are natural, since there is no paint or lacquer coating that requires repeated maintenance, they do not require maintenance once they are properly installed at the construction site. Since patina formation continues on all surfaces throughout its life, zinc will repair itself and scratches will close by itself. The only maintenance that may need to be done would be to clean up the leaves and mud that has accumulated in areas that rainwater cannot clean up.
Easy to process
Rolled zinc can easily adapt to the structure, as it can be applied even in difficult folds with a small diameter. It easily takes conical, convex, concave and other complex shapes that are difficult or impossible to apply with other materials. This comfort and versatility inspires architects and provides a wide range of design and expression freedom in roofs and facades.
acoustic performance
It provides effective sound insulation for airborne noises (vehicle traffic, airplanes, etc.). Zinc also has better acoustic performance compared to harder alloys (aluminum, steel, plastic, etc.) for impact noise such as rain.
eco-friendly material
Zinc is non-toxic, natural, durable, in harmony with nature. All production in titanium zinc is made in accordance with ISO 14025 and LEED criteria. Titanium zinc is environmentally friendly, even rain water can be stored and reused, its production and installation do not harm the environment. In addition to being abundant in nature, zinc element is 100% recyclable. Compared to other metals, it melts at a much lower temperature and therefore provides the highest level of sustainability with energy savings. In addition, as an element, it is an indispensable food source for the development and continuity of human-plant-animal, all living things.