How to avoid and treat rust on your garage door
by Zap Garage Doors|30 April, 2025
If correctly installed and properly maintained, a garage door is an investment that should last for many years.
However, one of the most common reasons why a garage door might fail to reach its full predicted lifespan is rusting. If allowed to form and left to develop, rust can quickly compromise the performance and aesthetic of a garage door.
Thankfully, with the right techniques, you can quickly and easily treat, remove and prevent rust.
Below, you can find our recommended methods for treating and removing rust, and our top tips for rust prevention and post-treatment maintenance.
Why does rust form on garage doors?
Rust is a common issue for unmaintained metal garage doors, particularly in the UK (as a result of heavy rain spells and seasonal changes).
Rust occurs when iron or steel is exposed to oxygen and moisture. This results in a reaction (oxidation); a by-product of which is rust.
The rate of oxidation can be increased by factors such as heavy rain, the presence of salt (e.g. if you live by the coast, or if road salt has been added to nearby areas), and damage to the surface of the garage door (which makes the metal more exposed).
How to remove and treat garage door rust
If you do spot rust on your garage door, you’ll need to tackle it as quickly as possible (before it is allowed to develop).
You can treat and remove rust by following these steps:
- Clean the affected area – Use warm, soapy water to clean the rusted area, then allow it to dry completely.
- Remove the rust – Add a specialist rust remover to a wire brush, then apply the chemical to the rusted area using circular motions.
- Clean and smooth – Once all the rust has been removed, sand it smooth using sandpaper, before re-cleaning the area with soapy water.
- Seal and prime the door – Finally, restore and protect the area by applying a rust-inhibiting primer (using a soft microfibre cloth), allowing it to dry, then repainting over the treated area, using an outdoor metal paint in a matching colour.
Garage door rust prevention tips
To minimise the risk of rust recurring, or to prevent rust from developing in the first instance, follow these garage door maintenance tips:
- Regularly lubricate your door’s hinges and moving parts
- Wash your garage door regularly (we recommend doing so once every 3 months, and once every 2 months in the winter)
- Ensure your gutters are kept clear and unobstructed
- Regularly inspect your door for any scratches (if you do spot a scratch, touch up the affected paint as soon as possible)
- Apply a specialist moisture-prevention wax to the surface of your door
- Arrange a regular maintenance schedule with a garage door specialist
By following these precautions, you can keep your garage door looking and performing at its best, for longer.
At Zap Garage Doors, we specialise in garage door supply and repairs. Our skilled team are trusted by customers across Yorkshire and the surrounding areas, and we are renowned for our dependable, efficient and premium quality solutions.
To find out more about our services, don’t hesitate to get in touch.