How to Repair a Cracked Composite Door
Although composite doors are extremely sturdy but they are still susceptible to developing cracks due to general wear and tear. Fortunately cracks like this are generally easily repaired.
All you need is an plastic filler, a uPVC-friendly cleansing agent (HG uPVC Powerful Cleaner is ideal) and some medium to fine-grit Sandpaper. First, you need to clean the crack.
Identifying the Crack
Composite doors are one of the most popular kinds of front door on the market thanks to their design and strength. Like all doors made of composite, they can experience issues over time. Luckily, most of these issues can be fixed without calling in professionals.
If you hear a cracking sound each when you open or close your composite door, there might be an issue with the frame. This is particularly true if you can see the cracks in the frame of the composite door. In this instance it could be that the door and frame were not properly fitted at first. It's worth contacting the professional installer who fitted your composite door, since they can assist in solving the problem.
Another common issue with composite doors is misalignment of the latches and hinges. This can be due to excessive wear and tear or over use, but it can also be caused by variations in humidity and temperature. Fortunately, this is a problem that can usually be resolved by simply adjusting the screws.
It's also possible that your frame of your door is too small for the composite door. This can be the case if the door frame was not installed correctly by a professional installer. The frame will not be able to support the load of a door if it's too small. This could lead to cracks, warping and creaking.
Another reason that could cause a crack in a door made of composite is weather damage. The most common type of weather damage to composite doors is a worn out or missing weather seal. This can allow cold air to enter your home, along with debris and rain. It is easy to repair the problem with a damaged or missing seal by replacing it with a seal designed for composite doors.
Regular cleaning is the most essential component of maintaining the exterior of a composite door. This will eliminate any scratches or marks from the surface, in addition to preventing staining. It is recommended to wash your composite door at least once a week with warm soapy water to avoid pitting of the hardware, and you must also grease the hinges on a regular basis.
Cleaning the Crack
Composite doors are a favorite among homeowners due to their durability and low-maintenance feel. However, they are susceptible to a number of common problems over time, including warping and cracking. Most of these problems are solvable without professional help.
A composite door is constructed from a solid core of timber to give strength and stability and uPVC to weatherproof it against the elements. It is then clad with a glass reinforced plastic (GRP) outer skin which is available in a range of styles and finishes, including woodgrain effects as well as a smooth contemporary finishes. Composite doors are constructed by combining different materials that makes them highly robust, resistant to moisture, and resistant to scratches.

Keep your composite door clean and dry to maintain its good looks. You can keep your composite door looking good by regularly cleaning it using mild cleaner and an easy-to-clean cloth. However, you must also clean the door after exposure to sun or rain. Avoid using abrasive cleaning products as these could damage the surface of the door. Also, ensure that you use clean water to rinse it off once you're done.
Regularly cleaning the hinges and locks of your composite door is a simple way to maintain its appearance. A lubricant specifically made for uPVC doors and locks can be used, but be careful not to use too much as too much grease can cause the lock to stick or not function at all.
One last thing you should do to maintain your composite door is to periodically examine the weather stripping to make sure that it's in good shape and working properly. This will reduce drafts, and you can save money on your heating bill.
Although contemporary composite doors are robust and resistant to a variety of common issues, they can still be damaged by sudden temperature changes or by general wear and wear and tear. Even large cracks can usually be repaired with a plastic filler, sandpaper and a bit more sandpaper.
Filling the Crack
Although composite doors are extremely robust, they are susceptible to cracking because of physical damage such as scratches or impacts, or changes in temperature and humidity. These cracks are often easily repaired using simple DIY method.
Firstly, you will have to determine the cause of the crack. It could be as easy as crackling noise that you hear when you shut or open the door. Alternatively, it could be more severe, like visible cracks or damage to the external glass panel. If the issue is severe it is best to contact a professional.
The next step is applying a filler on the cracked area. Fillers made of plastic are available and are specifically designed to be applied to uPVC or composite materials. These will usually be mixed with liquid and powder that need to be mixed together and then applied immediately, since they set extremely quickly. Use a putty blade apply the filler, and ensure that you get it all the way to the other side.
After the filler has been applied, you will need to sand the filler to give it smoothness. You can make use of a light sanding pad or an electric sander to accomplish this. After you've sanded the area, you will require a clear coat of polyurethane or varnish to protect the door and filler.
If the sound of door hinges is making you hear cracking sounds It is recommended to lubricate the hinges to prevent them from falling or becoming stiff over time. This will help ensure the durability of the hinges and assist to prolong their life.
You can also keep your composite door looking as good as new by regularly cleaning it and using touch-up pens to fix any dents or scratches, and then reapplying paint in a similar color for an even appearance. Regular lubrication of any moving parts will also ensure they work smoothly and enhance the longevity of your composite door. This is a simple step that can be overlooked, but it will make a big difference to the functionality of your door and appearance.
Sanding the Crack
A composite door is tough and durable, but it's immune to the odd crack or creak. These problems are likely to occur in the frame. This can be caused by a variety of reasons, such as weathering or general wear and tear. If you're worried that your doors made of composite may be showing signs of age, you can take several steps to correct the issue.
The first thing to do is clean the area of the crack and the surrounding surface. This will stop dirt from being mixed with the subsequent repair work. Use a uPVC-friendly, fragrance-free cleaning agent, such as HG uPVC Powerful Cleaner, available on Amazon, to remove any built up grime and grit. Let the area dry fully before moving on.
After the crack has been cleaned, you can begin the repair process for your composite door. You can choose between filler and putty for this stage of the process depending on whether your door is painted or not. If it's painted, go for a wood filler which can be sanded after it's set. After composite door handle replacement have applied the filler of your choice and allowed it to set, allow it to dry. Sanding the filler down will help smooth the surface and create a appear more natural.
You'll also want to think about the size of the crack before you begin sanding. A larger split will require more than a filler or putty solution. If your door is showing signs of this, you may have to insert a wood spline into the split to provide a more lasting solution.
It is best to position the door frame and hinges properly to avoid a break. It's also important to regularly grease any moving parts, such as the hinges, using a product specially designed specifically for uPVC and composite materials. This will help reduce friction, and will keep your composite door running smoothly for a long time.