#Patina green color spray paint free#

Avoid cleaners which leave a coat of oxide on the copper surface.įollow cleaning with a thorough rinsing to remove all traces of the cleaning compound.

Cleaners of the trisodium phosphate type should be satisfactory. However, it is always advisable, particularly if the coloring is to be done immediately after installation, to go over the surface with a commercial chemical metal cleaner. This involves removal of the residual film of oil left on copper and brass sheets from mill rolling operations, and fingerprints and dirt deposited on the surface during handling and installation.Ī few hard rainstorms may clean the surfaces sufficiently to start operations. The copper surfaces to be colored must be clean, as any dirt, oil or grease on the surface will interfere with the chemical action of the solution. These potential shortcomings should be considered when attempting to artificially duplicate a weathering process which may take from five to seven years in coastal or industrial environments, longer in rural areas, and may perhaps never develop in some climates and atmospheres.Īrtificial patinas for architectural applications such as copper roofs, grilles, and statues have an inherent requirement which dictates that the solution has to be one which can be brushed or sprayed because of the large surface areas normally involved. In artificially producing or accelerating the formation of a patina, success seems to depend on the manner in which the solutions are applied, the weather conditions under which the treatment is carried out, and perhaps most important, on the climate to which the treated surfaces are exposed.īecause of the number of variables involved, chemically induced patinas are prone to lack of adhesion, excessive staining of adjacent materials or inability to achieve reasonable color uniformity over large surface areas. The basic chloride salts of copper are not only fairly soluble, but photosensitive as well. In seacoast locations, chloride salts may form an essential part of the patina film. Carbonate and chloride salts of copper may also be present in varying concentrations. In natural patination the major coloring agent in the film is basic copper sulfate.

Because of the time required to achieve this, much research has been done on artificial patination, with varying success. You can pick up your order from the store in Thessaloniki or Kalamaria, by appointment.The much admired natural protective coating of a blue-green patina characterizes older copper roofs, including ancient cathedrals as well as bronze statues and other copper metal surfaces exposed to the weather. No extra charge for cash on delivery service! Delivery within 24 hours (for consecutive working days **)ģ. Special prices for express deliveries in the city of Thessalonikiġ. In this case the order must already be paid with one of the available payment methods. We can cooperate with your own transport company as long as you write in the comments the details of your transport (name, phone number, person in charge, and whatever else you deem necessary). Via Transport Company with Customer charge It is usually preferred for large volume products (eg easel, crate, etc.).Ģ.3. Your order is usually delivered from 1-7 working days, after consultation with the transport company. You receive the products at the address you stated through a Transport company. Each additional kilo is charged € 1.00 and in some cases a volumetric weight calculation is performed. Up to 2 kg under € 50, the costs are € 2.80 (including VAT).

#Patina green color spray paint free#

The cost is € 1.95 per delivery (price includes VAT 24%).įor orders over 50 € and up to 2 kg, shipping costs are free for all of Greece >. Pay the partner of our company, upon delivery of your order at your place. The security of your transactions is guaranteed by the secure management of your Piraeus Bank ePos data, which accepts all the above cards.ġ.2 Payment upon receipt of the order at your place (COD) Payment by Credit and Debit Card: The KARLAS ART WORLD online store accepts all Visa, Mastercard, American Express and DINERS credit cards.