Should You Lubricate Your Locks

Should You Lubricate Your Locks?

Sometimes your door lock can ‘stick’, and you can find yourself ‘stuck’ outside, or even inside. Locks can dry out over time and the mechanisms can become ‘sticky’.

Why Locks Become Sticky or Hard to Use

Locks can become ‘dirty’ and ‘grimey’ with consistent use, causing the lock to gum or seize up over time. Environmental factors such as moisture, salt air, or prolonged dry conditions can also contribute.

A malfunctioning lock can cause serious problems — the most critical being not being able to open or close the lock so your home can be safe and secure.

Using Graphite Powder

The most traditional dry lubricant used by locksmiths is graphite powder.

Advantages:

• Will not dry out the lock
• Protects against freezing and extends lock life
• Performs well in higher temperature conditions

Disadvantages:

• Not ideal for very moist environments
• Can build up inside the lock if overused

Spray Lubricants (Teflon or Silicone)

Today, locksmiths often favour teflon-based or silicone-based spray lubricants.

Advantages:

• Not oil-based and won’t dry out after use
• Clean and less messy than graphite
• Easy to apply with excellent maintenance qualities

Disadvantages:

• Light lubricant that does not last as long as graphite
• If mixed with dry lubricants, can form a mud-like residue

IMPORTANT: Do not use oil-based lubricants or WD-40. These products congeal over time and will gum up lock mechanisms.

When to Call a Locksmith

Sometimes a sticking lock is caused by a poorly fitting door rather than the lock itself. In these cases, lubrication alone may not solve the issue.

For serious lock or door problems, it is best to consult a professional locksmith who can assess whether the lock should be repaired or replaced.