The Room
Here is a checklist for any archive storage that preserves historical documents and objects:
- Temperature: A stable temperature of 18°C, with fluctuations of max ± 2°C. (The temperature can be higher or lower, the important thing is that it is stable with minimal variations.)
- Humidity: A stable relative humidity (RH) of 30–40% (according to Swedish standards, a range of 30–50% is often recommended depending on material, but stability is key).
- Warning system: Alarm system/monitoring for changes in both humidity and temperature must be in place.
- Water: No active water pipes or drains are allowed inside the archive room. (This includes water sprinklers intended for fire fighting.)
- Fire protection: The room must consist of one or more fire compartments. An example of a fire compartment is a room with closable doors, where the doors have a fire resistance rating of EI 120 (120 minutes). This can be achieved with doors rated for 120 minutes or through an airlock with two separate doors each rated for 60 minutes. In case of fire alarm, the doors should preferably close automatically.
- Electricity: No electrical panels or fuse boxes may be placed inside the room. An external main switch to cut all power is required.


