Storing important documents like birth certificates, passports, and social security cards requires careful planning to protect them from damage and unauthorized access. A storage unit can be a safe solution, but only if you take specific precautions against humidity, temperature fluctuations, and potential theft.
Understand the risks to paper documents
Paper documents are vulnerable to moisture, heat, light, and pests. A standard drive-up storage unit, even one with climate control, may not provide the same environment as a home office. The biggest threats are humidity and temperature swings. High humidity can cause paper to warp, stick together, and develop mold. Temperature fluctuations can accelerate fading and brittleness. To protect your documents, look for a climate-controlled storage unit that maintains a consistent temperature and low humidity level, ideally between 55 and 72 degrees Fahrenheit with humidity around 30 to 50 percent.
Choose the right storage environment
Not all storage units are equal for document storage. Here is what to prioritize:
- Climate control: Opt for a unit that is fully climate controlled, not just heated or cooled. This ensures year round stability.
- Low humidity: Ask the facility about their humidity control systems. Some facilities use dehumidifiers or HVAC systems that manage moisture.
- Interior access: Units inside a building offer better protection from outdoor elements than drive-up units.
- Security features: Look for a facility with 24/7 video surveillance, electronic gate access with individual keypad codes, and well lit hallways. Your documents are valuable and should be stored in a secure location.
Prepare your documents for storage
Even in a climate controlled environment, you need to properly package your documents. Follow these steps for the best protection:
- Use acid free, archival quality folders or boxes. Standard cardboard boxes contain acids that can leach into paper over time, causing yellowing and brittleness. Archival boxes are designed for long term preservation.
- Place documents in plastic sleeves or page protectors. This adds a layer of protection against accidental spills or humidity spikes. Use archival safe polypropylene sleeves, not PVC.
- Store boxes off the floor. Even in a climate controlled unit, floors can accumulate dust and moisture. Place your boxes on a pallet or a sturdy shelf to keep them dry and prevent pest access.
- Avoid attic or garage style units. These are more prone to temperature swings and pest issues. Stick to indoor, climate controlled options.
Consider digital backups for extra security
While a storage unit can protect physical copies, the safest approach for irreplaceable documents is to also keep digital backups. Scan each document at high resolution and save the files to a secure cloud storage service and an external hard drive stored in a separate location. This gives you a fallback if the physical copies are ever lost or damaged. For birth certificates and passports, a digital copy is not a legal substitute, but it can help you replace them more easily.
Review insurance and liability
Standard storage unit insurance policies typically cover the value of items stored, but they have limits and exclusions. Important documents like birth certificates and passports may have low replacement value, but the time and cost to replace them is significant. Check your storage lease and your own renters or homeowners insurance policy to confirm what is covered. Some facilities offer additional coverage, but read the fine print. Also, verify that the facility does not place restrictions on storing such documents. Most climate controlled facilities allow them, but it is wise to ask directly.
What to avoid
- Do not store documents in plastic bins without a seal. While plastic bins offer some protection, they can trap moisture inside if not sealed properly or if the environment is very humid. Use breathable, acid free boxes instead.
- Do not use adhesive tape or paperclips directly on documents. Tape can chemically damage paper over time, and paperclips can leave rusty marks. Use archival sleeves instead.
- Do not stack boxes directly on top of each other without support. Heavy boxes can crush the contents of lower boxes, especially if stored for years. Use shelving units or evenly distribute weight.
Final checklist before placing documents in storage
- Select a climate controlled unit with low humidity.
- Use acid free, archival quality containers.
- Place documents in plastic sleeves or protectors.
- Store boxes off the floor on a shelf or pallet.
- Make digital backups and store them separately.
- Confirm your insurance coverage and facility policies.
- Label boxes clearly with contents and date of storage.
By taking these practical steps, you can safely store important documents in a storage unit while minimizing the risks of damage. Always confirm specific facility policies and your lease terms before storing any valuable items.