TRESOR
A home fire quickly reaches 800 to 1,000 °C. Paper, though, chars at about 170 °C, and digital media give up much earlier. The short answer: if you really want to protect documents against fire, you need a certified safe with fire protection certified on its own: the usual classes are S 60 P or S 120 P to EN 1047-1 (60 or 120 minutes of tested protection for paper) or the lighter grades LFS 30 P / LFS 60 P to EN 15659. Burglary protection and fire protection are separate test worlds: a high-grade certified safe can fail in a fire, and a pure fire cabinet can fail in a burglary.
Fire-protection classes at a glance
| Class | Standard | Tested protection | Suitable for |
|---|---|---|---|
| LFS 30 P | EN 15659 | 30 min., paper | basic protection for documents |
| LFS 60 P | EN 15659 | 60 min., paper | documents, a longer fire load |
| S 60 P | EN 1047-1 | 60 min., paper, including drop test | important originals |
| S 120 P | EN 1047-1 | 120 min., paper, including drop test | maximum requirement |
| S 60 DIS / S 120 DIS | EN 1047-1 | as above, but for data media | hard drives, tapes, USB |
The difference between the standards is how hard the test is: under EN 1047-1 the heated cabinet is also dropped from over 9 meters (a simulated ceiling breakthrough) and must get through the reheating phase as well. That is why a "real" S 60 P cabinet is more massive, and more expensive, than an LFS model. The DIS classes apply to data media, because there much lower internal temperatures and humidity are already destructive; a P-certified paper safe is therefore NOT a safe place for the backup hard drive.
What belongs in the fire-protection safe
Purchase contracts, wills, and powers of attorney (originals with legal effect), family register, certificates, vehicle registration documents, policies, land-register papers, physical backup media (in a DIS class), a little emergency cash. Rule of thumb for the size: double the paper stack you can see. Folders are bulkier than you think, and the space you need grows over the years.
For everything digital, the 3-2-1 logic still holds: the fire-protection safe does not replace an external backup, it protects the originals that exist only once. And for what is extremely irreplaceable, the bank safe-deposit box remains the reference, with the drawback of opening hours.
Combination cabinets: fire + burglary
If you need both (and that is the normal case as soon as valuables sit next to paper), look for dual certification: a resistance grade to EN 1143-1 AND a fire-protection class, each with its own plate. Which burglary class fits which contents is explained in the security grades guide; the insurance side is covered in the cash guide. Be careful with marketing phrases such as "fireproof" or "fire-retardant" with no class stated. Without a standard and a plate, that is an advertising word, not a promise of protection.
Choose the spot with fire in mind
Fire spreads upward: the ground floor and the basement are thermally kinder than the attic. Spots right next to large fire loads are a poor choice (a garage with gasoline cans, a workshop, a boiler room). And because the fire is then put out, it is worth a look at watertightness: many documents survive the heat and then drown in extinguishing water. Current fire-protection safes seal against that; extra document sleeves cost almost nothing and save a lot.
Conclusion
Fire protection is its own certification, not a side feature: P classes for paper, DIS classes for data media, EN 1047-1 as the harder test against EN 15659. If you want to protect original documents and valuables together, buy dual-certified and put the cabinet where the fire reaches it latest.