Common Composite Door Problems & How to Prevent Them


Common Composite Door Problems & How to Prevent Them

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Composite doors have been designed so that they are easy to maintain, highly secure, and offer great thermal efficiency. However, like many things around the home, you may likely start to experience a few problems with your composite door over time.

But don’t let this put you off buying a composite door, as in this article, we will highlight the potential problems and offer guidance on how to overcome them!

What is a composite door?

Before we delve into the common problems and how to solve them, let’s first explain what a composite door is and why they are a better choice than their uPVC and timber counterparts.

Composite doors are made of more than one material, which allows for the combination of different materials to counteract the common problems (security, durability, non-weather-proof) found in uPVC and timber doors and bring advantages to the structure. Combining the materials makes the door stronger, more durable, and makes for a thicker, long-lasting choice.

What are Apeer’s composite doors made of?

Our composite doors are made from fiberglass with a high-quality polyurethane core. Fiberglass offers many different benefits such as security, durability, and is both waterproof and windproof. It is less likely to warp or bow, which is a common problem you’re likely to experience with a uPVC or timber door.

Top 6 Common Composite Door Problems

Door swelling in the sun

One of the most common door problems across composite, uPVC, and timber is swelling during those hot summer days. One of the main causes of this is having an oversized door. As the sun shines down on your doors, they will naturally swell and expand, which can make it difficult for the door to open or close. If your door is going to be south-facing especially, you need to make sure you’re buying a door that allows for natural swelling.

Closing the door properly is also an important aspect of avoiding warping or bowing damage. Pull the handle (also known as throwing the handle) up when the door is closed to ensure the locks are fully engaged, a simple preventative measure that can save you the heartache of damage down the line. If you fail to do this, you will be leaving the door solely resting on a latch which only holds the middle of the door in place, leaving the top and bottom of the door to warp or swell in the heat. 

By throwing the handle each time you close the door, you can save money long-term!

My locks are sticking

just because composite doors are easy to maintain, it doesn’t mean you should hold off on basic maintenance as long as you possibly can. Sticking locks are extremely inconvenient and infuriating at times and can also lead to home security issues. By carrying out some simple maintenance on your composite door locks, you will avoid this common problem and increase your locks’ lifespan.

A common choice for lubricating your locks will be WD-40, but this can do more harm than good. Here at Apeer, we recommend using a grease lubricant and you should do this once every six months.

For your door cylinder, never use grease or oil-based lubricants, instead, you should use silicone or graphite-based lubricant.

Dropped hinges

Composite doors are fitted with self-lubricating bearings, meaning your hinges only require minimal maintenance. When your door is in constant use, the hinges may likely drop, and if this occurs, it’s solved with a minor hinge adjustment. Even with regular maintenance, it’s perfectly normal for the hinges to drop, and you can even fix this yourself with the correct tools.

Like sticking locks, you need to carry out basic hinge maintenance from time to time, and you can do this by spraying the hinges with a light oil lubricant every couple of months.


Natural wear and tear of composite doors are inevitable, and as a result, so is staining. Thankfully it’s not something you need to worry about, as there is a simple, quick fix.

Your composite door may be suffering from weather stains, or even have muddy paw prints or dirty handprints in places. All you need to do is grab a clean cloth and mix a mild detergent with water to clean your door. If the stain proves to be stubborn, you may need to use something stronger and safe for use on composite doors to clean the stain.

Tea staining is also a common problem with composite doors with stainless steel furniture or glazing trims. This is often confused for corrosion or rust however it is actually caused by a build-up of oxidised surface contaminants on stainless steel. Regularly cleaning your stainless steel will reduce the likely hood of tea staining.

Worn weather seals or gaskets

Over time, the weather seals added to your composite door, designed to keep water from leaking into the home, can become dislodged. You need to check that the weather seals are correctly positioned on the door track regularly, and if not, you need to push the seal firmly back into the grooves in the track to prevent damage when opening/closing the door.

Blocked drainage holes

Composite doors, and most exterior doors, come with a built-in drainage system which consists of slots and holes in the bottom of the door’s thresholds. These ensure any excess water runs off and stays outside the home. Once or twice a year, it’s recommended to check the drainage holes and remove any dirt.

Flush them with water to check if they’re working properly and if you’re still struggling, you can use a thin screwdriver to get those hard-to-reach places. If you find that there’s water pooling between the two gaskets/weather seals in your threshold, this is the most likely culprit!

Why choose a composite door for your home?


First impressions of your home count, and if you want to make sure your home’s exterior says all the right things, upgrading to a composite door is a perfect choice.

Composite doors are a smart and advanced choice for your home. At Apeer, our composite doors come with many colour choices with the most popular being Pink, Grey, Black, and Green. If you can’t find your desired shade, we can also colour match your door!

What are the advantages of having a composite door?

Composite doors have transformed the door industry thanks to their benefits and how well they transform the look of homes. If you need more convincing, here are a few advantages to installing a composite door:

  • Built to last – The materials used in a composite door make them highly durable.
  • Improves home security – At Apeer, security is a top priority, and every door comes with a multi-point locking system as well as a super-strong, high-density polyutherane core that far exceeds all police-approved security standards. Our doors are also as intruder-proof as they come!
  • Versatile with many colour options ­­One of the common downsides of a uPVC door is that the look is uniform, you aren’t going to stand out amongst the other houses in your area with uPVC doors. There are far fewer design options compared to composite doors. Our door builder lets you bring your dream door to life!
  • Resistance to fading and damage ­­– By carrying out basic maintenance from time to time on your composite door, you will keep it looking as new as the day you had it installed!
  • Weatherproof and watertight – Our double-sealed rebate makes our composite doors virtually airtight by creating an internal secondary seal.
  • Energy-efficient – Along with a 70mm super-strong, high-insulating core, glass elements on our doors are triple glazed for extra insulation, and we offer an additional gas-filling service to further improve thermal performance.

Apeer Composite Doors

At Apeer, our composite doors are fully customisable to meet your needs. If you have any questions or queries about buying a composite door, you can get in touch with us directly, and we will be happy to take you through a consultation!

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