Originally Posted By: Cris
As for the safe, it's rated to keep the internal temp below a max 177 degrees celsius for 2 hours. Most importantly it keeps sealed for 24 hours, so if the fire brigade filled the house full of water it would still be ok. It doesn't get much better than that without spending a whole heap of money!!!

My take on a home safe like that is that it primarily prevents theft, anything else should be considered a bonus, not a core feature.

To protect against anything else you probably want to look at using an environment that has been built from the ground up to protect important materials. Like a vault or secure storage facility.
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Cheers,

Andy M