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How To Clean & Maintain a Composite Door – Tips & Advice

So you’ve splashed out on a new composite door and have given your house some serious kerb appeal. We can all agree you made a great decision. Composite doors have become the go-to option for homeowners wanting to improve the look of their property whilst increasing energy-efficiency and security.

Now you’ve got the door of your dreams, it’s vitally important to take care of it so it continues to impress whilst serving its fundamental purpose for years to come.

In this article, we’ll offer some top tips on how to clean and maintain your composite door.

What is a composite door?

A composite door is a door that is made up of multiple materials, each with their own purpose and benefit. They have become the most popular choice for homeowners, overtaking traditional uPVC or timber doors. Most composite doors feature a strong timber frame at their core, which is naturally insulating. Additional materials such as uPVC are used to encase the timber frame, making it weather resistant, hard wearing and increasing its thermal-efficiency.

If you would like to learn about composite doors in more detail, please read our helpful article Composite Doors Explained.

Why do I need to maintain my composite door?

Although composite doors are manufactured to last using durable materials and hard-wearing paint finishes, they still need semi-regular cleaning and maintenance to keep them looking great and working as intended.

The Great British weather can be unforgiving, and your door faces the elements head on.  Also, toxins in air pollution can have a detrimental effect on your door’s finish if they are not wiped away regularly. And lets not forget, your front door gets used constantly, so components like locks, hinges and deadbolts will need some attention from time to time.

It is worth noting that all doors will expand and contract during different times of the year when the temperature and humidity changes. You might find your door becomes slightly stubborn when opening or closing however it’s nothing to worry about.

Almost all materials react to these changes so it’s ultimately something we all have to live with.

Read on to learn how to look after your composite door.

How to Clean a Composite Door

Cleaning your composite door might seem straight forward, but it’s important to use the correct products so you don’t do more harm than good. Here are our do’s and don’ts when it comes to cleaning your composite door;

  • Always follow the manufacturer’s instructions on cleaning products.
  • Do not use excessive quantities of any cleaning product.
  • Use a mild detergent such as warm soapy water.
  • Avoid solvent-based cleaners and bleach which can damage paintwork.
  • Use a soft brush initially to remove any loose dust or dirt.
  • Always use a soft sponge or cleaning cloth (we recommend microfibre).
  • Never use an abrasive product such as a hard brush, scourer or brillo pad.
  • For glazing, use a damp soft cloth and wipe dry with a dry cloth.
  • Gently use a soft toothbrush to get into hard-to-reach areas.
  • If possible, leave your door open as the airflow will help dry your door.

By following these simple rules, you can clean your door safe in the knowledge that no damage will be caused, and your manufacturer’s warranty won’t be invalidated.

TOP TIP: Make sure your house key isn’t on a large bunch of keys with unnecessary things like keychains. Paint scratches close to the key chamber are commonly caused by keys hitting the door when you lock and unlock it. Instead, keep your house key on a soft fob that won’t cause this type of damage.

How to Maintain a Composite Door

Cleaning your composite door is one thing, but maintaining it is another! Although composite doors don’t actually require excessive maintenance, they do require some to avoid issues such as stiffness and the dreaded squeaking and creaking hinges!

Maintenance should be carried out bi-annually at the start of Spring and Autumn. This is when the weather starts to change so it’s the perfect time to carry out maintenance and avoid issues.

Lubricating The Key Cylinder on a Door

  • If possible, use a lubricant recommended by the manufacturer.
  • We recommend you lubricate the cylinder with a graphite or silicon-based lubricant.
  • Powdered lubricants are also a great option as they aren’t “gunky”.
  • To make lubricating the cylinder easier, opt for a spray application lubricant.
  • Do not use grease or oil-based lubricants in the key cylinder.
  • Spray the lubricant in the key cylinder and onto the key.
  • Insert and retract the key several times without turning.
  • Wipe any excess lubricant away with a clean dry cloth.

Lubricating The Latch, Deadbolt and Hinges on a Door

  • If possible, use a lubricant recommended by the manufacturer.
  • We always recommend using a graphite or silicon-based lubricant.
  • Grease or oil-based lubricants can be used but please do so sparingly.
  • To make lubricating the cylinder easier, opt for a spray application lubricant.
  • Push the latch in, apply the lubricant then push in and out several times.
  • Lift the door handle upwards or push downwards to activate the deadbolt.
  • Apply the lubricant to the deadbolt whilst still holding the handle up or down.
  • For multi-point locking mechanisms, apply lubricant to all deadbolts.
  • Once the lubricant is applied, move the handle up and down several times.
  • Apply lubricant to the hinges and open and close the door several times.
  • Wipe away any excess lubricant off all components with a clean dry cloth.


The above tips and advice might seem like a lot of hard work, but in reality composite door cleaning and maintenance takes no time at all. By sparing a little time twice a year you can make sure your door looks great and works as it should for years to come.

Why choose Eco Thermal Design for your composite door installation?

Eco Thermal Design has transformed countless homes across Yorkshire with quality composite doors. We work with only the best quality composite door manufacturers such as Solidor and Rockdoor. We pride ourselves on the quality of our tradespeople, who are not only talented, but exceptionally friendly and polite. Our Which Trusted Trader reviews are testament to the quality of both our work and our people. We also guarantee our work with an insurance-backed guarantee and are Certass certified installers.

If you’re considering replacing your existing door with a composite door and would like to discuss your options, feel free to get in touch here to speak with an expert member of our team.

What Our Customers Say

“Quality products are only as good as the team that fit them and in our case both the product and the fitters resulted in a first class and professional installation. Respectful of our home and tidied up at the end of each day….Thank You”
Les Finucane

“Excellent service from Eco Thermal again. Would recommend to anyone. Also good to have a local firm that you can trust.”
Ross Duguid

“Very happy with the whole process and of course the finished installation.”
Michael Senior

You can also read our reviews on Which Trusted Trader where we are rated five stars.