Waterproof and Fireproof Safes: Two Ratings, Read Separately

A water-rated safe carries a second rating, not a stronger first one

A water-rated safe is a safe, document box or bag with a stated rating for water: how deep, how long, and who tested it. A fire and waterproof safe box carries that rating alongside a fire rating. The two ratings come from different tests and answer different questions. Neither one implies the other.

This page lists every fire-rated safe, document box, home safe and document bag we track that has a stated water rating, whether "water-resistant" or a named depth and time. The table shows the water rating as a triple, the same way it shows fire: duration, depth, and who said so.

Why water at all? Three reasons come up in listings and manuals:

• Flooding and leaks. Basements, ground floors and rooms near water heaters or pipes.
• Firefighting. House fires are often fought with water. A safe that survives the heat can still sit in water afterwards.
• Spills and humidity. Mostly a question of seals and placement.

Fire protection is the other half. The fire-rated safes page covers safes sold with a fire rating, whether or not they claim water protection.

Who needs a fire and water-rated safe, and who can skip one

It suits someone storing paper or media in a basement, a ground-floor room, a flood-prone area, or anywhere a fire would be fought with water. The NFPA estimates US fire departments responded to about 329,500 home structure fires in 2024, and a fire rating alone says nothing about what happens when the hoses arrive.

You can probably skip the water rating if:

• The safe sits on an upper floor, away from plumbing, and fire is your main concern. A fire rating may be enough.
• You're storing a gun. Gun safes are their own category with their own ratings; see our gun safe page, and check any water claim there the same way.
• You need theft protection. A water rating is not a burglary rating. Neither is a fire rating.

What to look for: depth, hours, and who held the stopwatch

"Waterproof" is a word. A water rating is a sentence with a number in it. The Marketing Department prefers the word, because the word never mentions depth. Here's what a complete water rating looks like and how to read it.

Depth. How deep was the water above the product? A few inches and a few feet are very different tests. A depth rating describes the conditions tested, not every flood.

Duration. How long was the product submerged or exposed? Hours matter. A rating of 24 hours and a rating of 72 hours at the same depth are not the same promise.

What counts as passing. A good rating states how much water was allowed inside. In one Intertek verification report for a line of chests and files, the test allowed no more than 5 grams of water inside after submersion in 2 inches of water for 24 or 72 hours.

Who tested it. Intertek, which issues ETL marks, is an OSHA-recognized Nationally Recognized Testing Laboratory. That same report shows ETL "Verified" claims can rest on modified test methods: a modified UL 72 fire endurance test and a modified UL 50E submersion test. A modified test is still a lab test. It's not the same as a full UL classification, and the listing should say which it is. A water rating with no lab named is a manufacturer claim.

The fire rating, read on its own. UL describes a fire rating as a class — the maximum interior temperature during testing — plus a time. UL 72 Class 350 is intended for paper records; Class 150 for paper and non-paper records; Class 125 is the strictest. Time ratings come in fixed durations, for example ½, 1 or 2 hours. A "60 min fire and waterproof box" search usually means a 1-hour fire rating plus a water rating; check that both are stated in full.

Media inside. If you're storing drives, check whether the verification names digital media. The Intertek report mentioned above does list digital media such as USB drives as retrievable after testing for that product line. Other products may not.

Closed and latched. A water rating applies to the product as tested: closed and locked. Left unlatched, it isn't the product that was rated.

Fire and water ratings in the same table: what changes

Putting both ratings on one product creates a trade-off you can see in the table. A fire rating depends on insulation; a water rating depends on seals. A product can be rated strongly for one and modestly for the other. Read both columns rather than assuming the stronger rating speaks for the weaker one.

Our guide to UL safe ratings covers the fire classes in more detail, and are gun safes fireproof explains why the outside temperature on a sticker isn't the inside temperature.

Placement does part of the rating's job

A water rating describes a test. Where you put the safe decides how often that test gets repeated in real life. A few placement checks cost nothing:

• Off the floor, if you can. A low shelf or a platform in a basement keeps the safe above shallow standing water. If you anchor it, anchor the platform as well.
• Away from the obvious sources. Water heaters, washing machines, sump pits and the pipes under a sink.
• Not in a corner that collects water. Look for old stains on the floor or the bottom of the walls.
• Above the flood line you know about. If your area has a history of flooding, the ground floor of the house may not be enough, and an upstairs closet may suit a small box better.

The trade-off is weight and anchoring. A heavy fire-rated safe may need the floor that's closest to the water. Our bolting guide covers concrete and wood floors, and our guide on where to put a gun safe covers basements, garages and upper floors in more detail. The same reasoning applies to any heavy safe.

Inside the safe, a sealed bag or container for the most important papers adds a second layer, whatever the rating says.

How to read the water-rated safe table

Every product here has a stated water rating — water-resistant, or a named depth and duration. Products confirmed to have no water rating are left out.

• Water column first: hours, depth and who tested it. "Rated" names a lab; "claimed" doesn't; "—" means a part of the rating we couldn't confirm.
• Fire column next: time, class or temperature, and lab.
• Capacity and document fit: whether your papers lie flat or fit hanging folders.
• Type: safes, document boxes and bags are in the same table. A bag is not a safe and doesn't stop theft; the fire-resistant bags page covers them separately.

When two products have similar water ratings, compare who tested each one, then the fire rating, then the size. For drives and media specifically, our media safes page covers ratings built for non-paper records.

Find the depth, the hours and the lab for the water rating. Then do the same for fire. If either one is missing a piece, the table will show you which.