The Appeal Of A Verdigris Patina

By Minnie Whitley


A protective green pigment is formed on metals like bronze, brass or copper over time. This verdigris patina that forms after years of weathering is very different from the original gleaming copper color. Such a patina can be created today by using products that speed up the natural process. A wide range of such products are available from many local and online stores.

One of the methods used in Medieval times to hasten the process involved burying wooden blocks with copper strips attached in dung for some time. Today, the burying technique is still used. However, nowadays objects are buried in absorbent materials like kitty litter or sawdust once they have been moistened with chemicals. Lovely textures and colors can be created in this way.

The artists in Ancient Greece used to hang copper plates over pots containing hot vinegar to obtain a green crust. They then used this as pigment for their paintings. In eighteenth century France, copper plates were placed in clay pots containing distilled wine to achieve the same result.

Today one does not have to go to such extremes. A beautiful aged finish can be achieved fairly easily and without taking much time by using one of the many products available. A finish like this involves a chemical reaction and results can vary according to factors such as the techniques used and conditions in which the chemical is applied. The uniqueness of the end product is one of the most appealing factors.

Application must be done with care as is always the case when working with chemicals. Experimentation is usually part of the process and it is often exciting to see what results can be produced. As the process has so many variables, the end product is quite unique and this is why it is so appealing.

Some products are applied to the metal at room temperature. These products are usually opaque and are either sprayed on or painted on with a brush. It is best to pour a small amount into a disposable container for application, pouring in more as required. Applying too much can spoil the effect, creating chalky areas that flake off.

Other products require heat for application. The advantage of using heat is that it causes the chemical to penetrate more deeply and thus bond more tightly. However, great care has to be taken when using flammable chemicals and heat. Using gloves and protective glasses is necessary and breathing in fumes should be avoided as they could be toxic.

This type of finish has become increasingly popular with homeowners as well as landscapers and designers. Statues, pots, doors, screens and many more items can be transformed, infusing interesting color and a touch of aged beauty into designs. They add the allure of something old and worn that has a history or tells a story.




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