How to Store Art Properly

Improper storage is one of the leading causes of artwork deterioration and value loss. Climate fluctuations, pests, light exposure, and poor handling can permanently damage even significant pieces. Whether storing valuable collections, inventory for sale, or personal artworks, proper storage practices are essential for preservation.

Why Proper Storage Matters

Preservation Impact

Improper storage causes:

• Fading from light exposure
• Warping from humidity fluctuations
• Cracking from temperature extremes
• Mold and mildew growth in damp conditions
• Pest damage (insects, rodents)
• Chemical deterioration from materials in contact with artwork

Value Impact

Storage condition directly affects:

• Resale value (condition is critical pricing factor)
• Insurance coverage and premiums
• Buyer confidence and willingness to purchase
• Appraisal valuations

Climate Control Standards

Temperature Requirements

• Ideal range: 60–75°F (15–24°C)
• Stability: More important than specific temperature
• Avoid fluctuations: Changes should be gradual (less than 5°F per day)
• No extreme heat: Never exceed 80°F
• No freezing: Never below 50°F

Rapid temperature changes cause expansion and contraction that can crack paint, warp canvas, and separate frames.

Humidity Control

• Ideal range: 40–55% relative humidity
• Stability: Most critical element (±5% is good)
• Too dry: Causes cracking, brittleness, glue failure
• Too humid: Causes mold, mildew, warping, adhesion loss
• Monitor continuously: Use hygrometers to track levels

Humidity fluctuations are more damaging than temperature changes. Consistent humidity preservation is the most important climate control factor.

Home Storage Guidelines

Best Rooms for Storage

• Interior closets: Stable temperatures, minimal light
• Basements: Usually cool and stable (avoid if damp)
• Interior walls: Less temperature fluctuation than exterior
• Avoid attics: Temperature extremes, pest access
• Avoid kitchens/bathrooms: Humidity and moisture issues

Climate Control in Home Storage

• Maintain consistent home temperature year-round
• Use dehumidifiers or humidifiers as needed
• Monitor with hygrometer (cheap insurance)
• Avoid location near windows (light exposure)
• Keep away from heating/cooling vents (temperature fluctuations)
• Ensure good air circulation to prevent mold

Professional Storage Facilities

When Professional Storage is Necessary

• Large collections exceeding home storage capacity
• High-value items requiring institutional-grade protection
• Limited climate control at home
• Frequent need to access inventory for sales
• Lack of secure storage location

Selecting Professional Facilities

Choose facilities with:

• Climate control: 70°F ± 2°, 45% RH ± 5%
• Monitoring systems: 24/7 environmental monitoring
• Fire suppression: Non-water-based (fine mist, dry powder)
• Security: Controlled access, surveillance, alarms
• Insurance: Full value coverage included
• Proper shelving: Acid-free, stable, appropriate spacing
• Staff expertise: Art-trained handlers and management
• References: Museums and galleries using their facility

Storage Facility Costs

• Small items: $50–$200 per month
• Full art storage unit: $300–$1,500+ per month
• Climate-controlled premium: Often $1,000–$5,000+ monthly
• Higher values justify costs through condition protection

Proper Packing and Positioning

Paintings and Canvas Works

• Store flat if possible (reduces stress on canvas)
• Never stack unprotected paintings directly on each other
• Use wooden cross-supports between stacked paintings
• Paintings over 5 feet should be stored vertically
• Cover with acid-free paper (not plastic—traps moisture)
• Store facing same direction to maintain consistent aging

Works on Paper

• Store flat in acid-free folders or boxes
• Never stand upright (stress on paper)
• Separate valuable pieces with acid-free interleaving
• Use archival tissue, never plastic wrap
• Store away from light (use opaque boxes)
• Protect from moisture with desiccant packs

Sculptures and 3D Work

• Store on stable, level surfaces
• Use padding under base (foam, felt, not foam peanuts)
• Wrap with acid-free tissue (not touching surface)
• Use bubble wrap for protection (no direct contact)
• Store in stable position to prevent tipping
• Sculptures of different materials need different conditions

Light Protection

Light Damage

• UV light causes permanent fading
• Visible light accelerates deterioration
• Even low light causes cumulative damage
• Some materials (photographs, paper, watercolors) are especially vulnerable

Protection Strategies

• Store in completely dark conditions (interior closets, boxes)
• Use opaque, archival-quality storage boxes
• UV-protective film for display windows (if necessary)
• Never store in attics or near windows
• If displayed, use UV-protective glass or acrylic

Pest and Contamination Prevention

Common Pests Damaging Art

• Insects (silverfish, roaches, moths)
• Rodents (mice, rats)
• Mold and mildew (from moisture)
• Bacteria (thriving in damp conditions)

Prevention Measures

• Maintain 40–55% humidity (inhibits insect and mold growth)
• Keep storage areas clean and free of debris
• Seal any cracks or gaps (pest entry points)
• Don't store food or organic materials near art
• Avoid pesticide sprays (damage artwork directly)
• Use desiccant packs (absorb excess moisture)
• Inspect regularly for signs of pests or mold

Materials to Avoid

Never use for art storage:

• Plastic wrap: Traps moisture and promotes mold
• Newspaper: Acidic ink transfers to artwork
• Cardboard boxes: Acid content deteriorates artwork
• Foam peanuts: Can damage surfaces and contain harmful chemicals
• Regular packing tape: Adhesive damages materials
• Painted wood: Paint chemicals off-gas and damage artwork
• Plywood/MDF: Formaldehyde emissions damage materials

Use Instead

• Acid-free paper and cardboard
• Archival tissue paper
• Acid-free boxes and folders
• Foam core (acid-free version)
• Archival-quality tape
• Unfinished wood or metal shelving

Documentation and Inventory

For valuable collections:

• Create detailed inventory with photographs
• Document condition before storage
• Record storage location and dates
• Maintain insurance documentation
• Keep inventory in separate secure location
• Update when pieces are removed or added

Regular Inspection

Check stored artwork regularly:

• Monthly in home storage
• Quarterly in professional facilities
• Look for signs of damage, pests, mold
• Verify climate control systems functioning
• Address any issues immediately
• Update condition documentation