Fitting Cat Flap in UPVC Door Panel

Fitting Cat Flap in UPVC Door Panel

Cat flaps let your cat go in and out whenever they want without having to let them in or out. They can also help keep your cat from having to go to the bathroom inside the house.

Fitting a cat flap in a door panel made of Upvc is a lot easier than a glass door, but it does require some skills and the right tools.

Measure the Door

Installing a cat door into a front door can be difficult however, so long as the cat flap is of the right type and you follow the instructions it shouldn't be too difficult. We will demonstrate how to mark the shape and use an jigsaw to cut out the door area. Then we'll complete the job by attaching the flap. This will ensure the flap stays in position and protects the doors from the damage caused by rain and wind.

The first step is measure the width of your pet in order to determine an accurate estimate of the size of cat flap you'll need. This will ensure that the flap is big enough that your pet can leave and enter the home without having to open and close the door every time, yet small enough to keep them from moving too far either way.

Once you have the measurements you can mark the location on the door where the template should be positioned, usually this is done with an X, however some kits come with drawings that show the location to drill, if you have one, then attach it to the door and use a pencil to draw around it. If your door has a sill or moulding on the bottom edge ensure you have enough space as this will ensure your cat's safety and stop them from gaining access to your home.

Then put on your eye protection as well as a dust mask. Then using a jigsaw, begin to cut along the line that you penciled in, don't try to press the blade too hard, as this could cause it to cut faster than you'd like it to. Set the square with a ruler to ensure you are cutting the material in a proper manner and that the hole is a rectangle. When you are happy with the result, you are able to take out the rest of the door material.

Draw a Line

The cat flap lets you to let your pet in and out without worrying about unwanted visitors or unwelcome gifts. It also stops draughts and keeps your home's temperature in check. Installing a cat flap on your door might seem difficult to those who haven't tried it before. Many people call a professional carpenter or joiner to do the job. This is an option but you can do it yourself if your tools are appropriate and the instructions are followed.

Although this is much simpler with a timber door, it is still possible in uPVC doors, though you must be careful not to scratch the doors as this will end the warranty. The first step in the process is to take measurements of the door, making sure that it can fit the new cat flap. If you have a standard uPVC panel it should be a breeze. However when your door is composite or a different type of door, you might need to be more careful.

The next step is to determine the height of your belly for your cat. This is the distance from the floor to the bottom of the cat's stomach and you will need to find a spot on the door where this measurement is within the range that your cat can comfortably pass through. Once you know this then you need to mark out the area with pencil and a spirit level so that you can be certain that the hole you make will be suitable for your cat.

Once you have marked out the area, it's time to make the hole. You will need an jigsaw. It is essential to be patient to ensure that the cuts are smooth and clean, rather than uneven and rough, since this could damage your door. It is also important to wear safety glasses and a dust-proof mask at all times when using the jigsaw, since inhaling the sawdust could be hazardous to your health. Once you have completed the cutting, you will have to smooth the edges of the hole using sandpaper so that your cat flap will fit easily.

Cut a hole

It can be a challenge to put the cat flap onto a door panel or sealed double glazing unit. It is tempting to tackle the task yourself, but unless you have a lot of expertise in DIY, it's recommended to hire an expert to complete the job for you. A faulty job can not only be unsightly, but also pose an security risk. It could allow cold air to enter when the cat is outdoors and hot air to escape when the cat is inside.

Mark the hole position on the door using an eraser and a spirit level. This will ensure it is positioned correctly and aligns with the rest of the door. You should make sure you have an sandpaper piece on ready to smooth out any rough edges.

Wear the safety equipment you'll need to use the power tool. If you're worried about the noise, you can get a jigsaw with a cord that is quieter and easier.

It is crucial to only remove the material required to make the cat flap. It is important to leave some extra material to cover the wall of the cat flap. However, removing too much can cause problems or even damage the door frame.

If the door is made of upvc and is made of metal, or has a frame, it could interfere with the microchip flap. In this situation you'll need to create an extra-large hole to ensure that the metal does not touch the walls of the flap.

If you're looking to install a cat flap into a upvc or double-glazed window with metal frames you'll need to talk to an expert. They will provide you with a new piece of glass with the hole that is already designed for the cat flap. This will be less expensive than fitting the flap into an existing pane of glass that was not made specifically for this purpose.

Place the Flap

Cat flaps give your pet the freedom to come and go whenever they like, allowing them to relax at home whenever they like. If you have a uPVC front door, it may be difficult to install the cat flap. This is especially true if you do not own glass panels that can be cut. If  RepairMyWindowsAndDoors  to purchase and install a replacement half-glazed uPVC panel, it's possible to install the cat flap to these doors. It's not as easy as cutting a hole through the door though and there are a few things you'll need first to ensure it's safe.


A composite door panel usually has a flimsy plastic outer skin that is bonded to a soft, polystyrene core that is insulating. The material is fairly fragile and care should be taken when cutting into it to avoid damaging. This type of door comes with a template that can be used to cut the hole.

Once you've determined the location of the hole in your door, it's now time to fit the cat flap. You can purchase and install various models, from basic push-button operated models to microchip activated units that allow access only to your pet. However, no matter what type of cat flap you pick, it is essential to ensure that your cat is able to use the flap without getting trapped outside in bad weather.

It is a good idea to choose circular fittings instead of one that is square, because circles are more securely cut into door glass. This is because square holes can make glass more vulnerable to cracking if a drill is used on it. It's also a much safer option as you don't risk having to drill into toughened glass that could shatter and hurt your pet or your family. This is particularly crucial if you have a young or elderly person in your home who may be hurt by shards of glass.