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Fitting Cat Flap in UPVC Door Panel
Cat flaps allow your pet move around whenever they want without needing to let him in or out. They also can help to stop your cat from urinating in the house.

It is easier to install the cat flap on a Upvc panel than on a glass one, but you will need some skills and the appropriate tools.

Take a measurement of the door

Installing a cat flap on the door isn't easy however, as long as you choose the right type of cat flap make sure you take your time and follow the directions provided, it shouldn't be too difficult. We will help you mark the shape and use a jigsaw in order to cut the door's opening. Then we will finish the job by affixing the cat flap. This will ensure that the flap remains in place and shields the doors from damage caused by rain and wind.

The first step is determine the width of your pet in order to determine an accurate estimate of what size of cat flap you will require. This will ensure that the flap is big enough that your pet can leave and enter the home without having to open or close the door every time, but it is also small enough to prevent the pet from straying too far in either direction.

Once you have the measurements, you can determine where on the door the template should be positioned, usually this is done with an X, but some kits include an illustration that outlines where to drill, if yours does, then you can stick it to the door and use a pencil to draw around the door. If your door has a sill or moulding at the bottom, be sure that you leave enough space between your cat and the moulding or sill.

Put on your eye protection and a dust mask. Then using a jigsaw begin cutting along the line you've drawn in, don't try to push the blade too hard as this can cause it to cut faster than you'd like it to. If you own a square that you have cut, use it to check whether you're cutting in the right way and to make sure the hole is a proper rectangular shape. Once you are satisfied with the shape, you can begin to take off the remaining door material.

Draw a Line

The cat flap allows you to let your pet go inside and outside without having to worry about unwanted visitors or unwanted gifts. It also prevents draughts, and helps keep your home's temperature steady. However, installing the cat flap to your door might seem like an intimidating task for those who've never done it before, leading many people to call a professional joiner or carpenter to do the job instead. While this is certainly an option, it is possible to complete the task yourself if you have the appropriate tools and follow the instructions carefully.

It is much easier to do with a wooden door, but it is still possible using uPVC. However you should be cautious not to scratch the doors because this will make it impossible to claim your warranty. The first step is to measure the door, ensuring that it can fit the new cat flap. If you have a standard uPVC panel it's easy. However in the case of composite or another type of door, you may need to be more careful.

The next step is to measure the height of your cat's belly. This is the distance from the floor to the bottom of the cat's stomach and you will need to find a place near the door where this measurement will fall within the range that your cat can comfortably pass through. Once you have this information you'll need to mark out the area with pencil and a spirit level so that you can ensure that the hole you make will be a good fit for your cat.

After you have marked the area, it is time to cut out the hole. It is essential to take your time and use a jigsaw ensure that the cuts are clean and smooth, not rough and uneven. This could cause damage to your door. It is also important to wear safety glasses and a dust-proof mask at all times when working with the jigsaw as dust from the saw could be harmful to your health. Once you've finished cutting the hole, you'll require sandpaper to smooth the edges so that the cat flap can be easily fitted into place.

Cut a Hole

It isn't easy to fit the cat flap onto a door panel or sealed double glazing unit. If you are not very skilled in DIY, it is recommended to hire an expert to do the job for you. A shoddy job might not just be ugly, but it could also be an issue for security and also allow cold air to get in when the cat is outside and hot air to escape once inside.

Mark the hole position on the door with a pencil and spirit level. This will ensure it is correctly positioned and aligns with the door's other parts. You should make sure you have an sandpaper piece on the ready for any rough edges.

Wear the safety equipment you'll need to use an electric tool. If you're worried about noise, you can get an electric jigsaw that is quieter and more user-friendly.

It is best to only remove the material that is required to make the cat flap. It is necessary to leave a little extra material to cover the wall of the cat flap. However cutting away too much could cause issues or even damage to the door frame.

If the door is made of upvc and features a metal panel or frame, it may interfere with the microchip flap. In this case you'll need to create an extra-large hole to ensure that the metal does not come into contact with wall of the flap.

If you are fitting the cat flap onto the frame of a double-glazed window with a frame made of metal, you will need to speak to a professional who can supply you with a new pane of glass that already has the hole for the cat flap already drilled in it. This is less expensive than trying to fit a cat flap inside an existing pane of glass that was not designed for this purpose.

Place the Flap

Cat flaps allow your pet to leave and come as they please, giving them the freedom to relax inside the house when they're feeling like it. If you have an uPVC front door, it can be difficult to put in the cat flap. This is especially true if you do not own an glass panel that is cut. If you're willing to install a half-glazed uPVC replacement panel, it's possible to install the cat flap. It's not a simple matter of slicing a hole into the door. It is also necessary to do a few things to ensure that the door is safe.


A composite door panel usually has an extremely thin plastic outer skin that is bonded to a soft, polystyrene insulating core. The material is extremely fragile and care must be taken when cutting through it to avoid causing damage. This type of door has a template you can use to cut the hole.

Once you've marked the opening in your front door, it's time to put in the cat flap. You can buy and fit various models including basic push-button operated models to microchip-activated ones that allow access only to your pet. Whatever type of cat flaps you select, it's vital that your cat is able to use the flap comfortably without getting stuck in bad weather.

It is a good idea to choose a circular fitting rather than one that is square, since circles are more securely cut into door glass. It's because square holes are more likely to break the glass when drilled. It's also a much safer choice to use since you're not at risk of having to drill into toughened glass that might break and cause injury to your pet or your family. cat flap installer is particularly important if you have child or an elderly person living at home who could be injured by shards of glass.

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