HomeSafesGun SafesHow To Keep Moisture Out Of Gun Safe?

How To Keep Moisture Out Of Gun Safe?

Moisture and guns. Two items that don’t mix well. There’s no fun way of saying it, but moisture can destroy a safe in no time flat. It’s stress you never want to encounter on your own, but unfortunately, it is the reality that many faces when they find out their prized collection, has been reduced to a pile of rust.

This is typically the case with flimsy gun safes and ones that have already begun to fall victim to time, temperature and dampness. Anywhere that houses guns need to be protected from moisture, or disaster will strike your collection sooner than later.

This article will discuss expert tips on keeping your gun safe and dry inside.

To keep the moisture out of your gun safe, make sure you purchase a dehumidifier for your home. This will help keep humidity levels down in the house and prevent moisture. Also, consider using a silica gel desiccant bag inside your gun safe. These bags will absorb any moisture that enters the safe and keep it dry. Choosing the right location for your gun safe will matter too. It should be in a cool, dry area with plenty of ventilation. 

What Causes Moisture In Gun Safes?

Storage kept in an uncontrolled environment, such as a garage, shed, basement, or attic, where the temperature fluctuates dramatically between day and night, is subject to condensation and hence excess moisture.

Furthermore, like any small closed room, the air in a gun safe remains sealed, leading to condensation and extra wetness. If you don’t take gun-safe moisture protection steps, the consequences will undoubtedly wreak havoc on your gun.

What are the Consequences of Moisture in My Gun Safe?

Moisture in your gun safe can cause irreversible and even dangerous damage to its contents and make it smelly. One of the most severe worries is guns regarding moisture damage.

Your gun safe protects your firearms against fire, misuse, and theft. However, it does not protect it from humidity. Exposing weapons to moisture can cause rust, causing parts to cling together and the firearms to misfire. Therefore, in addition to cleaning and thoroughly drying your guns before storing them, we strongly advise maintaining a low dewpoint in your safe.

What Is Acceptable Gun Safe Humidity Level?

What Is Acceptable Gun Safe Humidity Level?

According to the NRA, keeping your safe between 30 and 50 percent humidity at 70 degrees ambient temperature is the ideal storage setting for preventing rust and corrosion. If the air becomes dryer than 20%, you may experience problems with your gun stocks.

If your home is in a temperature range where condensation can form on metal, it’s usually fine. However, if you live on the coast and your house is exposed to salt air, your firearms would undoubtedly rust.

Gun Safe Hydrometer

An indoor hygrometer is the best way to check the humidity level of a gun safe. This tool monitors the temperature and condition of the safe, and it is simple to use and inexpensive.

A gun-safe hygrometer can be fitted to measure the inside temperature and humidity of firearm storage or cabinet. Condensation poses a high risk of rusting and shrinking your safe’s weapons and other documents. Excessive moisture, if not regulated, will cause your firearms to malfunction and damage ammo.

Is Moisture in my Gun Safe Bad?

Moisture in your gun safe can be harmful, but it is not always the world’s end. It can cause rust on your guns and other valuables. While some people say that it is okay to have moisture in your gun safe, this isn’t true. Rusting can cause irreversible damage to your firearms and other valuables.

It can damage your guns and make them unusable. In the worst-case scenario, it could make even sequel in an explosion due to the powder inside the gun becoming unstable when exposed to moisture. This is why it’s essential to keep an eye on the humidity levels in your safe to make sure that your firearms are protected from moisture damage.

What Might High Humidity Do To Your Gun Safe?

Here are some of the harms that severe humidity can do to your safe.

  • Ammo stored in a gun safe is susceptible to damage if exposed to excessive humidity.
  • Mold thrives in conditions of high humidity. Keep in mind that the interior of your safe may harbor damp or mildew, which will cause rotting.
  • Both inside and outside your gun safe, high humidity can cause rust buildup. However, rust cleaning can be used to remove it.
  • Extreme wetness can destroy your firearms, and it will also ruin the jewels and documents in your safe.
  • Other valuables, such as watches, hard drives, and electrical devices, might be harmed by excessive humidity.

How To Keep Moisture Out Of Gun Safe?

How To Keep Moisture Out Of Gun Safe?

Traditional methods, do-it-yourself approaches, and sophisticated solutions are all available to keep moisture from a gun safe. Each of these practical strategies can assist you in reducing moisture levels.

Dehumidifiers for Gun Safes

A dehumidifier is air conditioning equipment that successfully decreases and maintains the humidity level inside a specific or limited space. 

Types of Dehumidifiers

  • Gun safe electric dehumidifiers are gadgets shaped like goldenrod. They are designed to fit easily inside a gun safe while taking minimal space. This device requires some extra work because it must be plugged into a power socket.
  • Desiccant dehumidifiers are devices that do not use electricity and employ highly absorbent materials to absorb moisture inside a specific or limited region. Desiccant dehumidifiers are an excellent option for gun owners on a tight budget.

Silica Gel Pack

Silica Gel Pack

The silica gel pack is a low-cost but effective way of absorbing moisture in a gun safe. Silica gel packs can be found in jewelry cases, pharmaceutical bottles, and clothing boxes.

Each silica pack contains silica beads that absorb moisture to a certain amount before needing to be recharged. It is simple to restore silica packs by placing them in an oven or microwave for several hours to dry the soaked moisture and make them reusable.

The only disadvantage of this procedure is that you must replace the packs every two to three weeks of use. You must also be cautious not to let the authentic beads touch the gun since they might damage metal surfaces.

Integrated Sealant System

Some safes include a built-in sealing system to keep moisture out. This sealant design is available in foam, caulking, or silicone. This design is widely used around doors to keep out harmful humidity and dampness. If your gun safe does not come with a sealant system, you can easily make one out of foam or other absorbent materials like silicone.

Lightbulb Technique

This strategy is both easy and efficient. Like the electric dehumidifier, this approach needs you to place a light bulb inside your safe and run electricity through it. A light bulb, when suitably powered, will quickly heat its surrounds and dry the moisture and humidity in the air.

This method also necessitates drilling a hole in your safe. Next is to connect a wire from the power outlet to the bulb. It would help if you used the correct size light bulb for your gun safe; utilizing a small light bulb for a large safe will have no effect.

Damp Rid or MothBall

Mothballs are sound moisture absorbers. A damp rid, which contains calcium chloride, is also a suitable option for moisture absorption. However, you must exercise extreme caution during the application, particularly when handling mothballs, which can be toxic to humans and dangerous to the gun.

Dry Rice

Submerging a device in dry rice is the most famous traditional way of taking moisture out of it. This procedure can also be used to secure your gun safe. Replace a cup or more of rice in your gun safe every three months. This method is also quite effective and works best for small gun safes.

Baking Powder

Baking Powder

Baking soda contains sodium bicarbonate, efficiently dealing with moisture absorption and management. Insert a cup of baking soda into the gun safe while leaving some space between the cup and the gun. Replace the cup as soon as you observe a decrease in ineffectiveness.

Conditioned Setting

This approach is only helpful for people who live in dry climates. For example, you can position your gun safe next to an air conditioner or heater. These air conditioning units assist in sucking out excess moisture in the air and, as a result, within the gun safe.

Dry air has lower humidity, which reduces the quantity of moisture trapped inside the safe when the door is opened. Consequently, the amount of damp air in the vicinity of the gun safe is also considerably reduced.

People Also Ask

What causes mold in a gun safe?

Many things can cause mold in a gun safe. The most common causes include moisture, humidity, and temperature fluctuations. For example, if the humidity inside your gun safe is too high, then mold will begin to grow on the walls of your safe. This is because moisture is absorbed into the drywall of your safe and begins to produce mold spores.

Another common cause of mold in gun safes is temperature fluctuations. When the temperature outside changes drastically within a short amount of time, this can cause condensation on the interiors of your gun safe. This moisture then combines with dust and other particles to create mold spores that will grow on surfaces inside your safe.

Do you need to put a dehumidifier in a gun safe?

You won’t have to worry about the long-term detrimental effects of moisture on guns if you use a gun-safe dehumidifier, and you’ll be making a worthwhile investment in your gun safe. 

This is where a high-quality gun-safe dehumidifier comes into play. Unfortunately, regardless of where you live, moisture will progressively deteriorate your expensive weaponry unless you take action. 

Every Gun Owner Should Install A Dehumidifier For Their Gun

Too many gun owners believe that they don’t need a gun-safe dehumidifier if they reside in a low-humidity area. However, even a small amount of humidity trapped inside a gun vault can destroy firearms and other valuables. 

To avoid this, use a dehumidifier to dry and circulate the air. A desiccant is also capable of absorbing excess moisture. A humidity and temperature monitor can assist you in keeping track of the conditions within your gun safe.

What is the ideal temp for a gun safe?

To avoid overheating, keep your safe in an air-conditioned area. The temperature should range between 60 and 70 degrees Fahrenheit.

As long as the ambient air temperature remains 3 degrees warmer, all things inside the safe will remain 3 degrees warmer than they would otherwise be, avoiding condensation and evaporation, preventing moisture from entering the safe, and lowering the humidity level. 


Gun storage is a touchy subject. Storing guns entails having a safe place to keep your firearms and being conscious of the environment inside the safe. Bear in mind that temperature and humidity levels within the safe can impact how well your firearms are safeguarded.

The temperature and humidity levels must be regularly checked when storing firearms in an enclosed location. Maintain the ideal temperature and humidity for gun storage if you want your guns to last long.


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