Watercolours, photographs, dyed textiles, paper and coloured
surfaces tend to discolour, fade and become structurally weak when
exposed to light over a long period of time.
Damage from light exposure is cumulative and
All visible light can cause fading and discoloration. However,
ultra-violet rays reacting with sensitive components present in
pigmented surfaces and dyed materials, cause the most
At the other end of the spectrum, localised heating can cause
desiccation, shrinkage and cracking from infrared rays and
expansion or contraction due to fluctuating temperature.
- avoid putting artefact near or under direct and intense
lighting (especially direct sunlight).
- reduce the damaging effects of the ultra-violet rays by adding
filters to windows or light sources, or screening windows with
curtains or blinds.
- rotate light sensitive artefacts on display to minimise fading
- keep storage areas dark and display areas lit with low wattage
- use an ultra-violet filtering acrylic sheet in front of framed