The short answer
Find the Moisture Source
The first step is to figure out where the dampness is coming from. Check for water stains on the ceiling, walls, or floor. Look for pinhole leaks in the roof or gaps around doors and vents. A musty smell often comes from a slow leak that has been going on for a while.
If you store items directly on the concrete floor, moisture can wick up from the ground. Cardboard boxes and fabric absorb that dampness, which creates the mildew odor. Even a small amount of trapped humidity can cause a persistent smell, so inspect everything you have stored.
- Check ceiling tiles and walls for brown spots
- Look for rust on metal shelves or tools
- Feel the floor for dampness
- Inspect door seals for gaps
- Smell the air near vents and corners
Control Humidity in the Unit
High humidity is a common cause of mildew in storage spaces. If you live in a humid climate like Daytona Beach, moisture in the air can settle on your belongings. Using a dehumidifier can help, but keep the unit ventilated as well.
You can also use moisture absorbers, like silica gel packs or a bucket of desiccant, to help dry the air. Make sure your items are clean and completely dry before you put them away. Wet or damp items will create mildew even if the unit itself is dry.
- Use a dehumidifier if you have power
- Place moisture absorbers in corners
- Keep a small gap between boxes and walls
- Elevate boxes on pallets or shelves
- Open the door occasionally to air out
Check for Leaks and Water Damage
A leaky roof or a broken pipe can cause water to pool inside your unit. If you see any signs of water damage, you need to address the source first. Fixing the leak is essential before you try to remove the smell, otherwise the problem will return.
Water damage can also come from a neighboring unit. If the walls are shared, water can travel through the structure. If you notice a musty smell coming from the wall or ceiling, the source may be on the other side. Let the facility manager know so they can inspect the area.
Clean and Dry Affected Items
Once you find the moisture, you need to dry out everything that got wet. Remove wet cardboard boxes, fabric, and paper items. These materials hold moisture and can grow mold quickly. Wash or wipe down non-porous items with a mild detergent and water.
For porous items like wood furniture or mattresses, you may need to dry them thoroughly in the sun. If the mildew smell is strong, you might need to discard some items. The pros can help with larger cleanup if the water damage is extensive, especially if it involves drywall or flooring.
When to Call the Pros
If the mildew smell persists after you've dried things out, you may have a hidden water problem. A professional water damage inspection can find moisture inside walls or under floors. The pros use moisture meters and other tools to locate the source of the dampness.
If you have water-damaged drywall or flooring, those materials may need to be removed and replaced. The pros can handle that work safely. They also have commercial fans and dehumidifiers to dry out the space thoroughly. Acting quickly can prevent mold from spreading further.
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Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (386) 272-5697Frequently asked questions
Can a mildew smell in my storage unit make me sick?
Mildew and mold can cause respiratory irritation, especially for people with allergies or asthma. If you feel unwell, see a doctor. It's sensible to avoid spending time in a moldy unit and address the problem promptly.
Will my insurance cover damage to my stored items?
Policies vary, and your insurer decides what is covered. Some renters or homeowners policies include coverage for stored belongings, but not all. Check your policy and talk to your insurance company about what is included.
How can I prevent mildew from coming back?
Keep the unit dry and well-ventilated. Use a dehumidifier if possible, and avoid storing damp items. Check your unit regularly for leaks or condensation. If you notice a smell, act quickly to find and fix the source.