Originally Posted by
bae
I have been to perhaps a 20 house and business fires in which there was a "fire-resistant" box or safe involved.
In only one case did the documents survive a fully-involved structure fire. The time period that the building is cooking off and cooking during overhaul is simply too long for most of the rating levels. In the fire where the commercial fire-resistant safe *did* survive, we went in actively *during* the fire to pull out the safe, but I suspect it wouldn't have lasted the entire duration of the incident if we had left it there.
In several cases, a "fire-resistant" box/safe *did* save the contents in a simple room-and-contents fire, but the time period involved is quite a bit lower.
I keep my own important things in decently-rated boxes/envelopes/safes, but I don't expect them to survive a full-on fire here, so I keep copies on the cloud, and in my bank safe deposit box.
Also, please, if your house is seriously on fire(*), don't dork around trying to save any contents of your home, get the heck out as fast as you can, closing all doors to interior compartments of the home on your way out.
(*) That is, if your well-placed fire extinguisher doesn't do the job instantly....