Fitting Cat Flap in UPVC Door Panel Cat flaps allow your pet to come and go as they please without you needing to let them in or out. They also prevent your cat from peeing in the home.

It is simpler to install an animal flap on a Upvc panel than on a glass one, but you will need some skills and the correct tools.

Take a measurement of the door

Fitting a cat door in a front door can be difficult however, provided that the cat flap is of the correct one and you follow the directions, it shouldn't be too difficult. We will be showing you how to draw the shape, use the jigsaw to slice the area in the door and then complete the job by attaching the cat flap to the door. This will ensure that the flap stays in place and shields the door from wind and rain damaging the door.

The first thing to do is take a measurement of the width of your pet in order to determine an accurate estimate of what size of cat flap you'll need. talks about it will ensure that the flap is big enough to let your pet go inside and out of the house without having to open and close the door each time, but also small enough to keep them from going too far in either direction.

If your kit has a drawing showing where to drill, you can place it on the door and then use a pencil around it. If your door has a moulding or sill on the bottom edge of it ensure you have enough clearance from these to keep your cat safe and stop them from gaining access to your home.

Utilize a set square to check that you are cutting correctly and ensure that the hole is in a rectangle shape. When you are satisfied with this, you can begin removing the remaining door material. Use a set square to ensure you are cutting the material correctly and that the hole is a rectangle. When you are happy with the final result, you can remove the remaining door material.

Draw a Line

The cat flap lets you to let your pet inside and out without worrying about unwanted visitors or unwelcome gifts. It also stops draughts and helps keep your home's temperature in check. However, fitting an animal flap on your door could be an intimidating task for those who have never done it before. This can lead many to hire a professional carpenter or joiner to do the job. It is an option, but you can do it yourself if your tools are appropriate and the instructions are followed.

While this is far simpler with a timber door, it is still feasible in uPVC doors, though you should be cautious not to damage the doors, as this can cause damage to your warranty. The first step is to take measurements of the door, making sure that it will fit the new cat flap. This should be easy enough if you are using the standard uPVC door, but you might need to take more care if you have an insulated or composite type of door since these can be more difficult to cut into than solid uPVC panels.

The next step is to determine the height of your belly for your cat. This is the height from the floor to the bottom of the cat's stomach, and you will need to find a place near the door that will be within the range your cat can comfortably pass through. Once you've figured out the measurements you'll be required to mark the space with a spirit-level and a pencil so you are certain that the hole will fit your cat.

After you have marked the area, it is time to make the hole. You will require an jigsaw. It is crucial to take your time in order to ensure that the cuts are clean and smooth rather than uneven and rough, since it could cause damage to your door. Wear safety glasses and a dust mask while working with the jigsaw. Inhaling sawdust is hazardous for your health. After you've completed the cutting, you will have to smooth the edges of the hole with sandpaper so that your cat flap will fit easily into place.

Cut a Hole

It can be difficult to install a cat flap into a door panel or sealed double glazing unit. You might be tempted to tackle the job yourself, but unless you have plenty of expertise in DIY, it's likely to be best to have a professional to do the task for you. A botched job could not only be ugly but also pose security risks. It could let cold air in when the cat is outside and hot air to escape when it is inside.

Mark the hole's position on the door using a pencil and spirit level. This will ensure that it is properly positioned and is flush with the rest of the door. Make sure you have sandpaper on hand to smooth out any rough edges.

Once the line has been drawn, you can cut the hole using a jigsaw. Be sure to wear any safety gear for working with an electric tool. If you are concerned about the sound of a jigsaw you can buy a cordless version which is much quieter and easier to use.


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

If the upvc door has a metal panel or frame, it may interfere with the microchip flap. In this situation you'll need create an extra-large hole to ensure that the metal doesn't touch the wall of the flap.

If you're installing a cat flap into a upvc door or double glazed window with a metal frame then you will need to speak to a professional who can provide you with a brand new pane of glass that already has the hole for the cat flap inside. This will be less expensive than fitting a cat flap inside an existing pane of glass that was not made specifically for this purpose.

Install the Flap

Cat flaps let your pet come and go at their own pace, giving them the freedom to lounge inside the house whenever they feel like it. If you have an uPVC front door, it can be difficult to install the cat flap. This is especially the case if you do not own an glass panel that can be cut. If you're looking to install a half-glazed uPVC replacement panel, it is possible to add the cat flap. It's not as easy as making a hole in the door though and there are a few things you'll need to take care of first to make sure it's safe.

A uPVC, GRP or composite door panel typically comprises a flimsy plastic outer skin joined to a soft polystyrene core that is insulating. It is crucial to be careful when cutting the material. This kind of door typically includes a template which you can use as a guide to cut the hole in the door.

Once you've determined the location of the hole in your door, now it's time to fit the cat flap itself. You can buy and fit a wide variety of different models that range from simple push-button operated ones to microchip-activated ones that only let in your pet. Whatever type of cat flap you pick, it's vital that your cat is able to use the flap without getting caught in bad weather.

It's a good idea choose circular fittings rather than one that is square, because circles can be more securely cut into the door glass. It's because square holes are more likely to break the glass when drilled. It's also a safer choice to use since you're not putting yourself at risk by having to drill into toughened glass that could shatter and cause injury to your pet or your family. This is particularly important if there are elderly or children living at home who could be hurt by glass shards.