

We have a fireproof / waterproof safe box we store documents like that in (essentially this). It’s not going to keep an intruder from getting the documents if they wanted to (they could just take the box with them and smash it open, it’s certainly not good as an anti-theft device) but it’s waterproof and fireproof and that’s more what we were concerned with.
It’s worth noting that these aren’t rated to protect documents from a prolonged intense fire; if your house burns to the ground, it’s probably not going to help.










That was our feeling, too - if we did lose everything, we have digital backups of those documents. The chances are obviously low of having a fire, but that’s not really the point… the intent is to plan for the “what if” scenario. If you want 100% fire safety, you store things off-site, but this was an acceptable level of risk for the cost, for us. You mention floods; these boxes are rated for much longer in water, so they might be applicable to your use-case.