Choosing the Best Locks For Storage Units

Discover the differences in locks that you can choose to secure your storage unit.
Kelsey Woods

Kelsey Woods

May 23, 2025 6 min read
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Select a lock to learn more:

Padlocks for Storage Units

Disc Locks for Storage Units

Cylinder Locks for Storage Units

In the world of self-storage, there’s nothing more important than ensuring the safety and security of your prized possessions. Whether they’re stored in a facility or a convenient portable storage container just yards away from your home, peace of mind is paramount. Unfortunately, security features are a must-have in the storage world because theft is a legitimate concern, regardless of where you live.

Luckily, there’s a simple solution to safeguard your belongings: investing in a high-quality storage unit lock. If you’re uncertain about which is the best storage lock to choose, this comprehensive guide on the various types of self-storage unit locks will empower you with the knowledge and confidence to select the best lock to keep your belongings safe.

Understanding Self-Storage Unit Security

In storage facilities, protecting client valuables is the number one concern. The safety of stored items is prioritized through security measures such as gated facility entry points, electronic gate access, 24/7 video camera surveillance, robust security, keyed padlocks, and well-lit grounds and buildings. Some storage facilities also offer storage lockers with security options like alarmed units, which provide extra peace of mind for renters. In addition to these safety measures, a reliable and sturdy lock is a must. A high-quality lock is an added layer of protection, acting as a deterrent to thieves.

When it comes to choosing a lock, different self-storage facilities may have different storage door latches and requirements or recommendations. Make sure you adhere to the facility’s security standards by investing in the proper lock to ensure the safety of your belongings.

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Types of Locks for Self-Storage Units

While certain storage facilities offer locks for purchase, others may require you to obtain your own. When searching for the ideal lock for your self-storage unit, you’ll find three primary types: traditional padlocks, disc locks, and cylinder locks. Combination locks aren’t the best in terms of high-quality locks to use. To make an informed decision, let’s examine and compare the advantages offered by each type.

Best Padlock for Storage Unit

Padlock for Storage Unit

Padlocks are versatile, easy to use, and can be used on most storage units. They are typically made of steel or stainless steel, brass, zinc alloy, or aluminum and are the most affordable locks to use on a storage locker. Padlocks are constructed with a simple U-shaped shackle that snaps into place to secure the device in a hasp.

Chris Seabrook, owner of Asguard Locksmiths and a highly experienced Locksmithing Specialist with 20 years in the industry, says to look for a padlock with a shackle made of thick metal, like steel, which is the most durable. However, a closed-shackle padlock is a more secure option, as it has a shackle with very little exposure once the lock is closed. It’s shrouded by the lock casing with only a small section visible, making it much harder to use cutters to cut through the metal.

Check out these two solid entries into the storage unit padlock market. 

Master Lock

Closed Shackle Padlock

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Disc Lock For Storage Units

Unlike padlocks, disc locks cannot be removed with bolt cutters, which is why they have become another storage industry favorite. The disc lock has a round body and shrouded shackle lock that makes it notoriously difficult to tamper with. These locks are compatible with most storage unit latches, and as most disc locks are made with stainless steel, it makes them perfect for outdoor units. Disc locks are the more expensive locks, but the extra security they provide can be worth it.

Seabrook recommends the ABUS 24/70 Disc lock for its security and durability. “What impressed me the most was the padlock’s resistance to tampering,” he said. “I remember one time I found some scratch marks on the shackle, indicating that someone had attempted to break the lock, but its solid construction, including a hardened steel shackle and disc-shaped design, provided a strong defense against cutting and sawing attempts. It packs a one-two punch thanks to its premium construction and reasonable price. Overall, we haven’t come across a better value for the money.”

We recommend this disc lock for most of your storage needs. 

ABUS 24/70 Disc Lock

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Cylinder Lock For Storage Units

Cylinder Lock For Storage Units

Often, a cylinder lock comes equipped for your storage unit. This is the baseline self-storage lock. This type of lock differs from padlocks and disc locks in that it is built right into the storage unit itself, you just need a key. The specially designed key turns a cylinder attached to a cam, which then releases the lock. Cylinder locks are considered top-of-the-line locks as they are drill-proof and difficult to pick.

This is a good place to start searching for a cylinder lock. 

Self Storage Cylinder Lock

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Factors to Consider When Choosing Storage Unit Locks

Security Level: Having a secure lock is obviously the number one priority. Do your research and choose a high-quality lock that comes recommended by industry professionals and has been tested or certified by security organizations. Poor-quality locks are more likely to be cut, drilled, and lock-picked. You’ll want to make sure you’re giving yourself the highest level of security that you can.

Compatibility: Before purchasing a lock, check with the storage facility or company to ensure it’s compatible with the storage unit’s latch or locking mechanism. You’ll want to consider things like shape, size, and material. Additionally, you must be aware of any specific lock requirements or restrictions.

Durability: Although durability is an essential feature of all quality storage locks, it’s especially important for outdoor storage. Choose a lock with durable weather resistance features that can withstand harsh outdoor conditions. Many locks come with protective covers or coatings to enhance durability, which provides greater peace of mind than locks that tarnish or break if exposed to the elements.

Practice Good Self-Storage Security Habits

Investing in a high-quality storage unit lock is an essential step towards safeguarding your belongings, yet it’s only part of a comprehensive security strategy. Here are some additional measures to ensure optimal protection for your possessions:

  • Don’t share your storage unit key or lock combination with anyone you don’t completely trust.
  • Double-check that you’ve locked your storage unit securely after each visit.
  • Inspect your storage unit lock on a regular basis and replace it when necessary.
  • Lubricate your storage lock to keep it functioning smoothly and reliably.
  • If you’re looking for round-the-clock access in addition to security, be sure to check out this helpful guide to 24-hour storage amenities.

In conclusion, making that extra investment and selecting the right lock for your self-storage unit is of utmost importance. Padlocks are affordable, easy to use, and come in several materials and designs. Disc locks are usually made of stainless steel and are compatible with most storage unit latches, making them the industry’s go-to lock. Cylinder locks are best for storing valuable items as they are both drill-proof and impossible to pick. Remember to prioritize security, adhere to the facility’s guidelines and rules, and rest easy knowing your possessions are well-protected.

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Author

About the Author

Kelsey Woods

As the founder, marketer and head copywriter at Content by Kelsey, Kelsey Woods has been active in the marketing industry since 2017. She has worked with clients in the travel and tourism industry since 2018, and the self-storage space since 2021. Kelsey has now hired on a small supporting team so that, together, they can help her clients achieve a bigger impact. Her lead copywriter supporting Storable, Kelli Mandzuik, brings over five years of content, SEO and copywriting to the table, along with a shared passion for travel and tourism.