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How Sunlight Damages Artwork
Light damage is cumulative and often irreversible. Keep artworks—especially paper, photographs, textiles, and fugitive colorants—out of direct sun and manage both intensity and exposure time.
Why this question is harder than it looks
Ultraviolet radiation is one part of the risk. Visible light and heat also matter, so UV-filtering glazing is not permission to hang a sensitive work in a bright window indefinitely.
A practical way to decide
- Observe the wall at different times and seasons before installation.
- Move sensitive works away from direct sun and heat sources.
- Use curtains, shades, filters, and lower light levels where appropriate.
- Rotate especially sensitive works and keep dark-storage records.
- Consult a conservator when media, prior fading, or safe display limits are unclear.
What this does not establish
There is no single safe exposure for every artwork. Material identification and condition determine the appropriate plan.
Next step
Check an artwork to organize public evidence about a specific listing. The tool provides research context, not authentication or appraisal.
Sources
- Caring for Your PaintingsSmithsonian Museum Conservation Institute
- Care, Handling, and Storage of PhotographsLibrary of Congress
- Collections CareLibrary of Congress