How to Repair a Cracked Composite Door
Although composite doors are incredibly robust, they can still suffer from cracks caused by general wear and tear. Fortunately cracks like this are generally simple to repair.
All you require is an plastic filler, a uPVC-friendly cleaning agent (HG uPVC Powerful Cleaner is the best choice) and a medium to fine grit Sandpaper. First, you must clean the crack.
Identifying the Crack

Composite doors are a popular option for front doors due to their toughness and design. Like any other door, composite doors can develop issues in time. The majority of these issues can be solved without contacting a professional.
If you hear a loud cracking sound every when you shut or open your door made of composite It could be because the frame is damaged. This is particularly evident if the crack appears visible along the edges of the door frame. In this instance it could be due to the door and frame not being properly fitted initially. It's worth contacting the professional installer who installed your composite door, as they'll be able to help resolve this problem.
Misalignment of hinges and latches is a common issue with composite doors. RepairMyWindowsAndDoors could be due to excessive wear and tear or heavy use, but can also be caused from changes in temperature and moisture. This is another issue that can be fixed by simply changing screws.
You may also find that the frame of your composite door is too small. This can happen when the frame is not put in place properly by a professional installer. If the frame is too small it will not be capable of supporting the weight of the door. This can lead to cracking, warping and creaking.
Weather damage is another potential cause of a cracked composite door. The most frequent form of weather damage to composite doors is a worn or missing weather seal. This can allow cold air to enter the home, as well as debris and rain. It is easy to fix a faulty or missing seal by replacing it with a seal designed for composite doors.
Regular cleaning is the most important component of maintaining the composite front door. This will prevent scratches or marks on the surface, in addition to stopping stains. It is recommended to wash your composite door at least every week with soapy water to avoid pitting on the hardware. You must also grease the hinges every year.
Cleaning the Crack
Composite doors are a popular choice for homeowners due to their strength and low maintenance. In time, they can be prone to a variety of common issues such as cracks and warping. Most of these issues are solvable without professional assistance.
A composite door has a solid wood core to provide strength and stability, and uPVC to provide weatherproofing. The outer skin is made from glass reinforced plastic (GRP) that comes in a variety of designs and finishes, including woodgrain and a smooth contemporary finish. The combination of these two materials means that composite doors are highly durable and resistant to moisture and scratches.
Keep your composite door clean and dry to keep its attractive appearance. Regular cleaning using an mild cleaner and cloth is enough to keep it looking great However, you must clean it off after rain or prolonged exposure to sunlight. Avoid using products that are abrasive because they can harm the surface. Always use clean water after you've finished.
Regularly lubricating the hinges and locks of your composite door is a easy method to maintain its appearance. A lubricant specifically specially designed specifically for uPVC doors and locks will work well, but be careful not to overdo it because too much grease could cause the lock to become stuck or not function at all.
The last thing you should do to keep your composite door is to periodically examine the weather stripping to ensure that it is still intact and functioning properly. This will reduce drafts, and will save you on your heating bills.
Although composite doors of today are highly durable and resistant to a range of common issues, they can still be damaged by sudden temperature fluctuations or simply wear and tear. Large cracks can be repaired with a plastic filler, sandpaper, and perhaps a little more sandpaper.
Filling in the Crack
Although composite doors are very durable, they are also prone to cracking due to physical damage such as scratches or impacts, or changes in temperature and humidity. These cracks are often easily repaired using simple DIY technique.
You will first need to determine the cause of the crack. It could be as easy as hearing a crackling sound whenever you open or shut the door. Alternatively, it could be more significant such as visible cracks or damage to the exterior glass panel. If the issue is more serious it is recommended to consult a professional for help.
The next step is applying an adhesive to the cracked area. You can purchase plastic fillers that are specially made to be used on uPVC and composite materials. They are typically a mixture of liquid and powder which need to be mixed and applied immediately since they will are extremely hard and will set up very quickly. You'll also need to employ a putty knife to apply the filler to the crack, ensuring it is completely filled to the opposite side of the door.
After the filler has been applied and dried, you'll have to sand the surface for a smooth finish. You can employ a sanding pad with a light weight or an electric sander for this. After sanding the surface, you'll need to apply a clear layer of polyurethane or varnish to protect your door and filler.
If the sound that is cracking originates from the hinges of the door, you'll require lubrication to prevent them from dropping or becoming stiff over time. This will ensure the hinges' strength and prolong their life.
You can keep your composite door looking like new by sanding regularly, using a touch-up pen for repair of any scratches, and then applying the same hue to create an even appearance. Regularly lubricating ensures that your composite door is as long-lasting as it is possible. This is an easy step that is often forgotten, but it will make a big difference to your door's performance and appearance.
Sanding the Crack
A composite door is hardy and durable, but it's not immune to the odd creak or crack. These issues are more likely to occur within the frame. It could be due to a variety of factors, including weathering or general wear and wear and tear. If you're worried that your doors made of composite are beginning to show signs of age, there are a few simple steps you can take to rectify the problem.
It is important to first clean the crack and the surrounding area. This will stop dirt from getting mixed in with the repair work to come. Use a uPVC-friendly, fragrance-free cleaning product, such as HG uPVC Powerful Cleaner available on Amazon to clean any built up dirt and grit. Dry the area completely before moving on.
After the crack has been cleaned and dried, you can begin the composite door crack repair. Depending on if your door is painted, you can choose between putty and filler for this step. If it's painted, go for a wood filler which can be sanded down after it has set. Once you've applied your preferred filler, let it set. Sanding the compound down will help smooth the surface and make it appear more natural.
Before you begin sanding, you'll want to consider the size of the crack. A larger split will require more than filler or putty solution. If you notice evidence of this on your door, you might require a wooden spline for a longer-lasting solution.
It is best to position the door frame and hinges properly to avoid a break. It is also essential to grease all moving parts, including hinges, using an oil designed specifically for uPVC or composite materials. This will lessen friction and keep your composite doors operating smoothly for years to come.