By Charles Rose, founder of Glacier Art Objects
To protect art, control four things: light, humidity, temperature, and handling. Keep works on paper out of direct sunlight and use UV-filtering glazing; hold relative humidity stable between 40% and 55%; keep temperature steady around 65–72°F; and frame with acid-free, archival materials. For anything of value, insure it with a dedicated fine art policy rather than relying on homeowner's coverage.
A serious collection is built over years and meant to last for generations. Most damage to art is gradual, invisible week to week, and entirely preventable. A few simple practices, applied consistently, are the difference between a collection that endures and one that quietly degrades.
Table of contents
- Light: the worst enemy
- Humidity and temperature
- Archival framing
- Hanging and handling
- Cleaning (do less than you think)
- Storage
- Insurance and inventory
- Frequently asked questions
Light: the worst enemy
Light fades pigments, weakens paper, and dulls colors — and the damage is cumulative and irreversible. Never display works on paper, watercolors, photographs, or textiles in direct sunlight. For light-sensitive works, keep levels low (the museum standard is under 50 lux, noticeably dimmer than typical room lighting) and use UV-filtering glass or acrylic, which blocks 97%+ of harmful UV. Rotate sensitive works — hang them a year or two, then rest them in a dark drawer — exactly as museums do. Use LED bulbs with a high color rendering index (CRI 90+) and aim them to wash the wall rather than hit the work directly.
Humidity and temperature
Wood, canvas, paper, and lacquer all expand and contract with humidity, and sudden swings cause most damage. Aim for stable relative humidity between 40% and 55%. Below 35% is too dry; above 65% encourages mold and metal corrosion. Avoid radical seasonal swings (winter heating can drop indoor humidity below 20%). Don't hang art on exterior walls in older homes, above a working fireplace, or in bathrooms and kitchens. Keep temperature steady around 65–72°F (18–22°C), away from vents, radiators, and direct sun.
Archival framing
Good framing is invisible; bad framing damages art for years. For works on paper, insist on acid-free, lignin-free matboard (ordinary cardboard causes brown "mat burn"), archival hinging (Japanese paper and wheat starch paste, never tape directly on the art), a spacer to keep glazing off the surface, and UV-filtering glazing. For oil and acrylic paintings, frame without glazing in most cases — they're designed to breathe and be seen without glass. A good framer who uses reversible, archival methods is worth finding and keeping.
Hanging and handling
Use hanging hardware rated for the weight, and hang on two points for stability. For heavy works, anchor into studs. When handling unframed paper or photographs, wash and dry your hands first — skin oils transfer permanently — or wear nitrile gloves for metals and photographs. Always use two hands, and carry sculptures from the base, never by an extended arm, neck, or wing. Old porcelain and bronze figures break at exactly those points.
Cleaning: do less than you think
Most damage to art comes from people trying to clean it. Clean frame glazing with cleaner sprayed on a cloth (never directly on the glass — overspray reaches the art). Dust frames with a soft dry cloth. For paintings, use only a soft brush for dust — never any liquid or cleaner, no matter what you read online; painting cleaning is conservator work. For bronze and ceramics, dry brush or microfiber only. Anything flaking or unstable: don't touch it — call a conservator.
Storage
Store works on paper flat in archival folders and flat files; store paintings vertically, separated by archival corners, never face-to-face; box sculptures in custom-fit acid-free padding, never stacked; and keep textiles flat or rolled in archival tissue. Maintain stable climate in storage — no basements, attics, or garages.
Insurance and inventory
A homeowner's policy almost never covers fine art adequately. For any collection of real value, get a scheduled fine art policy — separate coverage with itemized scheduling of significant pieces, typically requiring a current appraisal (updated every 3–5 years) and photographs. Specialist coverage also protects works in transit, on loan, and during conservation. Keep a written inventory — artist, title, medium, dimensions, purchase source and price, provenance, photographs, and condition notes — with one copy stored offsite.
Frequently asked questions
What humidity level is best for art?
Aim for stable relative humidity between 40% and 55%. Below 35% is too dry and causes wood to crack and paper to become brittle; above 65% encourages mold on paper and textiles and corrosion on metals. Stability matters more than the exact number — avoid sudden seasonal swings.
Does sunlight damage art?
Yes. Light, especially UV, fades pigments, weakens paper, and dulls colors, and the damage is cumulative and irreversible. Never display works on paper, watercolors, or photographs in direct sunlight. Use UV-filtering glazing and keep light levels low for sensitive works.
How should I frame works on paper?
Use acid-free, lignin-free matboard, archival hinges (Japanese paper and wheat starch paste, never tape on the art), a spacer to keep the glazing off the surface, and UV-filtering glass or acrylic. These materials prevent mat burn, adhesion, and fading, and a good framer should use reversible methods.
Can I clean a painting myself?
No. Use only a soft dry brush to remove dust — never liquids or cleaners of any kind. Cleaning a painting is specialized conservation work, and well-meaning home attempts frequently cause permanent damage. For anything beyond dusting, consult a qualified conservator.
Do I need special insurance for my art collection?
For any collection of real value, yes. Homeowner's policies rarely cover fine art adequately. A scheduled fine art policy itemizes significant pieces and typically covers works in transit, on loan, and during conservation. It usually requires a current appraisal updated every three to five years.
Charles Rose is the founder of Glacier Art Objects and Sand and Rose LLC. Over more than a decade in the trade, he has handled and sold over 18,000 works of fine art, antiques, jade, sculpture, and collectible objects.
Every piece in our gallery includes care recommendations specific to its materials and condition. Questions about a piece you own? Get in touch.