Best fireproof and waterproof safes and document bags

How to choose

Decide what belongs at home

Split your papers. The FDIC suggests a bank safe deposit box for originals such as birth certificates, deeds and car titles. It says a home safe suits replaceable items you may need fast, and that passports and powers of attorney shouldn't sit in a bank box you can't reach after hours.⁴ FEMA's kit accepts a home fireproof and waterproof box, a bank box or a trusted relative for paper copies, and it warns you to check who can open a bank box if the renter dies or is incapacitated.⁵

A bank box isn't insured by default. FDIC insurance covers only deposit accounts, so don't expect the bank to pay for theft or damage, and ask your insurer about covering the contents.⁴ The FDIC also says no bank box or home safe is fully protected.⁴ Scans are the cheapest layer. Replacement rules vary and often require proof of identity, so keep a password-protected copy away from the house.^{5 19}

If your originals already live in a bank box and you keep digital copies elsewhere, you may only need a document bag at home for what you need quickly.

How many you need

One rated chest or safe per household is enough for most people's originals. That's our suggestion, not a rule. Start with what you're protecting and buy the smallest rated box that fits it, with room for hanging files or folders if that's how you keep your papers.

Buy on the label, not the word "fireproof"

Look for UL Classified or UL listed on the product itself. Bob Vila warns that "tested to UL standards" isn't the same as passing UL's test, and nobody outside the company verifies a maker's own tests.^{8 20} For paper, you want a rating built on UL's Class 350, which limits the inside to 350°F. Paper ignites at about 451°F, so the limit leaves a margin.^{16 20}

The label has real meaning. In a side-by-side furnace run filmed by NBC Bay Area, a non-UL cabinet sold with a half-hour claim passed 450°F inside about four and a half minutes and its contents caught fire. A UL-rated FireKing file beside it leveled off near 220°F at the 30-minute mark.²¹ That was one run at FireKing's factory, so read it as an illustration. Treat "fire resistant" with no named lab as no rating at all.

Choose 30 or 60 minutes

Compare the time, not the temperature. The figure on the box is the end of a rising furnace curve, not a constant blast. UL says its furnace reaches about 1,000°F in five minutes, and the NBC test crew says the curve hits 1,550°F at 30 minutes and 1,700°F at 60.^{21 22}

Nobody has published how long a safe needs to last in an average house fire, so this is a judgment call. In our view, 30 minutes is reasonable for most homes, and an hour makes more sense where a fire department response would be long. If the box will sit upstairs, look for a stated impact rating. UL drops a safe 30 feet, a fall of about three stories, but only if the maker asks for that test.²²

Read the water rating closely

Water ratings vary a lot and aren't the same test as the fire rating. Some First Alert chests say waterproof but give no number on the maker's page, and one 2019 review's table lists two First Alert models as tested only by the maker, though its text credits ETL for one of them.^{23 24} Hose water matters. Denver firefighters burned three 30-minute SentrySafe boxes for 15 minutes, and the papers came out unburned but wet.⁶

Expect a burned box to be damaged

Informal burns suggest paper usually survives, but boxes can fail. In the Denver burn, one latch melted and one lid came off as the hinges expanded.⁶ In the 6abc test, one corner of a chest sprang open, while the mid-priced chest kept everything dry.¹⁵ These were single, uncontrolled burns with no interior temperature readings. Put papers in a resealable plastic bag inside the box, as the FDIC suggests, and expect to pry a burned box open.⁴

Place it low, but above flood level

Heat rises. In the Denver burn, the floor was near 300°F while the ceiling was near 600°F at four minutes, and an assistant chief advised keeping a safe low.⁶ A basement is the usual low spot, but it's also where water collects. Nobody has measured this trade-off. In a flood-prone home, the ground floor is the better compromise, in our view.

Treat the inside as damp

Fire insulation can give off moisture.²⁵ Owners report musty smells and, in one small forum thread, damp papers and minor mold.^{9 26} Add a small silica pack and open the safe now and then, but one forum poster cautions against drying these safes out completely.²⁶

Keep digital backups somewhere else

A paper rating doesn't protect electronics. Class 350 allows 350°F inside, while Class 125 is the rating for digital media, which must stay under 125°F.²⁰ SentrySafe's pages say these picks protect DVDs and USB drives, but they don't name a Class 125 rating.^{1 2 3} In one burn of a Sentry 1100, a DVD was ruined and cards melted, though a flash drive and an SD card still worked.¹⁴ Don't store your only backup in a paper-rated box.