Group D – Framing: Art and Furniture Restoration

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Mural Conservation Techniques on Concrete:

Painting Location and Surface

The location of a mural has a big impact on the mural's longevity. Ideally, exposure to harsh sunlight should be avoided, but this isn't always possible. The surface is also important. Concrete that has already been painted can decrease the lifespan of a mural and should be cleaned with paint remover and solvent before you begin painting your mural. Fresh, clean concrete with minimal cracking will help preserve your mural and should be the foundation of your work.

Wall Preparation

Proper preparation of the concrete surface is essential to mural preservation. Avoid new concrete until it has set for three or four months. New concrete can hold moisture for this long and your mural should be painted on a dry surface for optimal lifespan. For older walls, prone to cracking and peeling, build a false wall for your mural. False walls can be used to prevent damage to a mural due to expansion and contraction. False walls can be constructed out of new concrete or even by stretching canvas over the surface of the wall.

Paint Choice

While any paint is susceptible to the elements, choosing a paint that is designed to handle wind, sun, rain and ice will preserve the integrity of your mural. For outdoors, acrylic water emulsion paint increases the adhesion characteristics and surface stability of the mural, helping to prevent deterioration.

Finishes

Soluvar Final Picture Varnish, both gloss and matte, is one brand of sealer used for finishing a mural. Both versions provide a clear coating that protects the mural from the elements. The finishes can be applied with a brush.

Cleaning

Even when all of the preparations have been carried out to help extend the life of a mural, there will be times when it is necessary to brighten the colors or make repairs to the surface. To do this, the finish will need to be removed. This can be accomplished with a mineral spirit applied to the surface and left on for 15 or 20 minutes before being wiped off. A mural may be touched up and cleaned once a year, depending on how quickly the elements deteriorate it.

http://www.ehow.com/video_2378061_preservation-tips-wall-mural.html