How To Keep Moisture Out of Gun Safe

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Much is being said about how guns can help keep you and your family safe, but it goes both ways.

For your firearm to work when called upon, you need to protect it from many things.

That is why safes are necessary if you own a gun. They stop burglars in their tracks and prevent accidental discharge, especially if you have kids.

However, there is one thing that most of these storage solutions could not repel: moisture.

Water is a natural component of air, especially if you live in a place where humidity is high.

Before we discuss how to keep moisture out of gun safe, here’s why you need to keep your gun dry.

Why Should You Keep Moisture Out of a Gun Safe?

You can answer this question with a single word: rust.

Guns mostly have metal parts that, in the presence of moisture, are susceptible to corrosion.

If these components get rusted, the gun’s mechanism could be compromised.

The most susceptible part is the bore, which requires precise clearances to remain accurate.

When rusted, the bore size becomes smaller, putting pressure on the bullet as it exits.

In worse cases, the rust could even cause the moving parts inside the gun to fuse, preventing the bullets from being fed into the chamber.

It could also lead to misfires, which is something that you could not afford to happen during emergencies.

If you are like most responsible gun owners, you probably keep your firearms inside the safe most of the time.

How Does Moisture Get in Your Gun Safe?

The humidity in the air varies from one place to another.

Still, the fact remains that moisture is present, especially in the lower parts of the house, like basements.

Whenever you open your gun safe to take something out or put something in, air gets in.

Along with air, all the moisture that it carries gets trapped after you close the safe.

Once inside, the circulation is cut off, making it easier for the suspended water particles to settle down.

This leads to the condensation of moisture on your gun, pieces of jewelry, and other valuable items in the safe.

Over time, this will lead to the formation of rust on metallic components.

How To Keep Moisture Out of Gun Safe

Water is everywhere, including the air we breathe.

To make sure you protect the items in your safe from moisture, you’ll want to follow the techniques below.

Here’s how to keep moisture out of gun safe.

Use Electric Gun Safe Dehumidifiers

Installing an electric dehumidifier is the best way to keep the interior of your gun safe dry and moisture-free.

This device absorbs moisture from the air within the gun safe.

It can also circulate dry air, which helps prevent the build-up of moisture.

As its name implies, an electric dehumidifier needs to be plugged into a power source for it to work.

For this reason, some gun safes have pre-drilled holes at the back where a power cord could run through.

If your safe does not have one, you will need to have it drilled before you can use an electric dehumidifier.

You can then attach the device to the inner wall or place it on the floor of the safe.

From there, run the cord through the hole, plug the dehumidifier into a nearby electrical outlet, and let it do its work.

Use Silica Gel

Using silica gel is one of the cheapest ways to keep moisture out of your gun safe.

This material is highly effective in absorbing water particles from the air and is often used for medicine, jewelry boxes, and other valuable items.

However, make sure that the material does not come into contact with your gun, as it can result in damage.

Also, it is important to note that the silica beads in the pack can only absorb moisture to a certain point.

It can get saturated within two to three weeks and will have to be replaced by then.

You can recharge the silica pack by drying it in an oven at 250 degrees for two or three hours.

Use Light Bulb

Another simple way of controlling moisture inside the gun safe is by installing a light bulb.

The idea behind this method is to keep the air warm and prevent the water particles from condensing.

To generate enough heat, make sure that the light bulb’s wattage is proportional to the size of your storage space.

Otherwise, water will still condense on the cooler parts of the safe.

Keep the Safe in an Air-Conditioned Room

Keeping your safe in an air-conditioned room can also help prevent moisture from doing a number on your gun.

People think that air conditioners can only cool the air inside their homes, which is a reasonable assumption.

In truth, these appliances can also help regulate humidity.

When they suck up warm air from a room, they also drain the moisture from the air.

The refrigerant then absorbs the heat from the warm air, and the condensate goes to the condensate pan.

If your gun safe room is air-conditioned, open your safe as often as you can.

Doing this will let fresh air in and prevent moisture from forming on your gun and other valuable items.

Use Uncooked Rice

If all the other options we listed are not for you, one simple hack is to use uncooked white rice.

Rice is a hygroscopic material, which means it absorbs moisture from its immediate surroundings.

Placed in a small space, like a gun safe, it can be an effective desiccant.

One to two cups should be enough for small gun safes.

It would be best if you replace it every four months or so, depending on the humidity in your area.

Invest in a Gun Safe with a Sealant System

Some gun safe models come with an integrated sealing system.

It is usually installed inside the doorjamb, and the most common materials used are silicon, caulking, and foam.

If you are in the market for a new gun safe, try looking for a model with this feature.

Alternatively, you can create a makeshift sealing system using store-bought silicone.

What Humidity Level to Maintain in Your Gun Safe

The National Rifle Association or NRA recommends a humidity level of 30 to 50 percent and a temperature of 70 degrees Fahrenheit.

Under these conditions, your gun, jewelry, and other valuable items will be safe from the elements.


Nobody is looking forward to situations where firearms are necessary. Still, you would want your gun to work if and when needed.

Getting a gun safe is your first step toward responsible gun ownership. Keeping moisture away is the next.

Hopefully, the tips discussed will help you do it.

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