The way you choose to glaze an artwork can make a big difference to your viewing pleasure and to the life of your artwork.
Light damage is irreversible and the extent of the damage will depend on the intensity and length of exposure. Without adequate protection from light, over time pigments will fade and the base material will discolour and become brittle. Photographs are also susceptible to light damage and should be treated with the same care to increase their lifespan.
It’s very important to note that it’s not just the UV light in the spectrum that causes damage, so even if you have a UV inhibiting glass on your artwork it’s best to place it in an area of your home that does not get direct sunlight. Reflections from the glass can also inhibit your viewing experience, especially on artworks with a high percentage of dark pigments. There are many varieties of UV protecting glass available and if supreme clarity is what you’re after then you should aim for a museum quality, non-reflecting glass.
For larger artwork where weight is an issue or if the artwork is often in transit, glazing with acrylic may be a better option. Also available in non-reflective, glazing with acrylic offers protection from light, less weight and will not break!