How to Repair a Cracked Composite Door
Although composite doors are incredibly durable, they do suffer from cracks caused by general wear and tear. Thankfully cracks caused by these are usually easy to repair.
All you need to do is apply the plastic filler and UPC-friendly cleaning agent (HG uPVC powerful cleaner is the best choice). You will also require fine or medium grit Sandpaper. It is essential to first clean the crack.
Identifying the Crack
Composite doors are one of the most popular kinds of front doors that are available due to their style and durability. Like any door that is made of wood, composite doors can face issues with time. Many of these issues are solvable without calling in professionals.
If you hear a cracking sound each when you open or shut your door made of composite, it might be an issue with the frame. This is particularly evident if you can see the crack in the frame of the composite door. In this case it could be because the frame and door were not properly fitted initially. It's worth contacting the professional installer who fitted your composite door, as they can assist in resolving this problem.
Another issue common to composite doors is misalignment of the latches and hinges. This is typically caused by excessive use or wear and tear however, it could also be caused by changes in humidity and temperature. This is a different issue that can be resolved by simply adjusting screws.
It's also possible that the door frame isn't big enough for your composite door. This can occur if the frame was not correctly installed by an experienced professional installer. If the frame is too small it will not be able to support the weight of the door. This could lead to cracking, warping and creaking.
Weather damage is a different cause of a cracked composite door. Weather damage is most commonly caused by a damaged or missing weather seal. This can allow cold air to enter your home, as well as rain and debris. A damaged or missing weather seal can easily be fixed by replacing it with a new one made for composite doors.
The most important aspect of maintaining a composite door is the regular cleaning. This will eliminate any scratches or marks on the surface, in addition to stopping stains. Clean your composite door with soapy water at least once a week to avoid pitting of the hardware. Also, ealing composite door repair should grease hinges every year.
Cleaning the Crack
Composite doors are a favorite choice for home owners thanks to their strength and low maintenance. As time passes, they could be prone to a variety of common issues including warping and cracked surfaces. Most of these issues are solvable without the assistance of a professional.
A composite door is constructed with a solid wood core to provide strength and stability, and uPVC to provide weatherproofing. The outer skin is made from glass reinforced plastic (GRP), which is available in a variety designs and finishes, including woodgrain and a smooth contemporary finish. Composite doors are made from a mix of materials that makes them highly durable and resistant to moisture and resistant to scratching.
The best method to ensure that your composite door looks nice is to keep it dry and clean. You can keep your composite door looking good by regularly cleaning it with a mild cleanser and an easy-to-clean cloth. But, you should also wipe the door down after prolonged exposure to sunlight or rain. Avoid using abrasive cleaners as they can damage the surface of the door, and always ensure that you use clean water to rinse it off when you are done.
Another easy way to keep your composite door looking good is to oil the hinges and locks regularly. It is recommended to use a lubricant designed for uPVC locks and doors but be careful not to overdo it. A lot of grease can cause the lock to get stuck or stop working altogether.
One last thing you should do to keep your composite door is to regularly examine the weather stripping to make sure that it is still intact and working correctly. This will help to reduce drafts and save you money on heating costs.
Modern composite doors are extremely durable and resistant to most common issues. However they are susceptible to being damaged by abrupt temperature fluctuations or general wear and wear and tear. Large cracks can be repaired by using some plastic filler, sandpaper and perhaps a little more sandpaper.
Filling in the Crack
Although composite doors are very robust, they are susceptible to cracking as a result of physical damage such as scratches or impacts, or changes in humidity and temperature. Cracks that are caused by these factors can be easily repaired using a simple DIY repair method.
You will first need to determine the cause of the crack. It could be as simple as hearing an audible cracking sound every time you open or shut the door. However, it could be more significant such as visible cracks or damage to the exterior 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 used on uPVC or composite materials. They will typically be composed of liquid and powder that need to be mixed and then applied immediately, since they set quickly. You will also need to make use of a putty knife in order to apply the filler to the crack, making sure that it is fully filled all the way through to the other side of the door.
When the filler has been put in, you'll have to sand it down to give it smooth finish. You can employ a sanding pad with a light weight or an electric sander for this purpose. After sanding the surface you'll have to apply an opaque layer of polyurethane or varnish to protect your filler and door.
If the cracking sound originates from the hinges of the door, you'll have to grease them to prevent them from dropping or becoming stiff with time. This will ensure the integrity of the hinges and assist to prolong their life.
You can keep your composite door looking new by regularly sanding it, using a touch-up pen to fix any scratches, and then applying the same hue to create uniformity. Regularly lubricating any moving parts will also ensure they work smoothly and enhance the longevity of your composite door. This is an easy step that can be overlooked, but can make all the difference to the functionality of your door and appearance.
Sanding the Crack
A composite door is hardy and durable, but it's resistant to the occasional crack or creak. It is likely that you will experience these problems with the frame, which can happen for various reasons, such as the weathering process and general wear and tear. If you're concerned that your composite doors are beginning to show signs of aging there are some easy steps you can follow to fix the issue.

The first thing you have to do is clean the area around the crack and its surrounding surface. This will help to stop dirt from becoming mixed with your later repair work. Use a uPVC-friendly, fragrance-free cleaning agent, like HG uPVC Powerful Cleaner, available on Amazon to clean any built up dirt and grit. Let the area dry fully before proceeding.
Once the crack is clean after which you can begin the repair process for your composite door. Depending on whether or not your door is painted, you can select between filler and putty for this step. If your door is painted, choose the wood filler that will be sanded following its setting. Once you've applied your chosen filler, allow it to set. Sanding the compound down will smooth the surface and make it appear more natural.
Before you start sanding, you'll need to think about how large the crack is. If the crack is larger, you will need more than just putty or filler to fix it. If you notice signs of this on your door, you might require a wooden spline for a longer-lasting solution.
The best method to prevent the formation of a split is to ensure the door frame and hinges are correctly placed. It's also important to regularly grease any moving parts, like the hinges, with an item specifically specially designed for uPVC and composite materials. This will decrease friction and keep your composite doors running smoothly for many years to come.