Location: indoor or outdoor Orientation: North, East, South, West.
Both are important due to traffic, pollutants and light exposure. Location and orientation will have an impact on the mural and make it more or less vulnerable to decay.
Indoors murals:
We can better protect indoor murals by creating a controlled climate, but be careful in terms of the location. Mold can easily grow in areas where the air is not flowing, and the humidity is high. Also, the proximity to a kitchen can be a problem due to high temperatures and soot.
Murals in corridors could be very vulnerable to abrasions. There are also structural issues to consider related to a building's structure, such as cracks or the breakage of mortar. Remember, the mural is an integral part of the architecture so it moves and settles with the building.
Outdoor murals:
Are more exposed to weathering. Sunlight produces fading, so it is important to select a surface that is not too exposed to the sun, or that is protected by architectural hangers.
Paints used need to be of high quality, and pigments lightfast. A clear coating protection with UV filter is recommended.
Graffiti is one of the main concerns, so applying an anti-graffiti coating may be appropriate to improve protection. Remember that anti-graffiti coatings need to be maintained.
Most important
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| Mural by Jean Charlot is at the Lee College Theatre (entrance hall) in Pearl City, Hawaii. |
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| The theatre attendees rest there elbows and place their drinks on top of the ledge, damaging the mural over time. Detail of scratches and paint losses. |
Outdoor murals:
Are more exposed to weathering. Sunlight produces fading, so it is important to select a surface that is not too exposed to the sun, or that is protected by architectural hangers.
Paints used need to be of high quality, and pigments lightfast. A clear coating protection with UV filter is recommended.
Graffiti is one of the main concerns, so applying an anti-graffiti coating may be appropriate to improve protection. Remember that anti-graffiti coatings need to be maintained.
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| "Whale of a Mural" is located on an under pass in the City of Santa Monica, CA |
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| Detail the painting showing the paint detaching due to salt efflorescence coming through the concrete walls. |
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| Removing graffiti from vinyl mural in Miami's Wynwood District. |
Most important
• Prepare the wall prior to painting the mural (cleaning, removal of loose materials, and priming).
• Consider alternative substrates or supports that may improve longevity.
• Make sure the materials are compatible (substrates are compatible with the paint layer, pigments are lightfast).
•A conservator can assess the wall and approve materials.
• Apply protection.
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| Artist Jill Weisberg |
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