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Fitting Cat Flap in UPVC Door Panel
Cat flaps let your cat go in and out at their own pace, without needing to let them in or out. They also can help to prevent your cat from toileting in the house.

It is easier to install the cat flap on a Upvc panel than on a glass one but you'll require some knowledge and right tools.

Measure the Door

Installing a cat flap on the door can be a challenge however, as long as you choose the right type of cat flap make sure you take your time and follow the instructions provided it should not prove to be too much trouble. We will be showing how to trace the shape, then use an jigsaw for cutting out the area in the door and then complete the job by attaching the flap to the door. This will ensure the flap is in place and shields the doors from damage caused by wind and rain.

To determine the size of the cat flap you require, measure the width of your pet. This will let you select a flap that is large enough for your pet to walk into the home and exit without having to open the door every time.

If your kit has an illustration of where to drill then you can stick it on the door and then draw a pencil around it. If your door has sill or moulding on the bottom edge ensure you have clearance from these to ensure your cat's safety and prevent them gaining access to your home.

Next put on your eye protection as well as a dust mask. Then using a jigsaw start cutting along the line that you have pencilled in, but don't push the blade too hard because this could cause it to cut faster than you'd like it to. Set the square with a ruler to ensure that you are cutting the material correctly and that the hole is a rectangle. Once you are satisfied with the result, you can take the door material off.

Draw a Line

The cat flap is a great method to allow your pet to go out and in without having to worry about them being in the house with guests or leaving unwanted gifts inside the house. It also prevents drafts and helps to keep the temperature inside your home stable. However, fitting the cat flap to your door might seem like an intimidating task for those who haven't done it before, which is why many people to 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 steps are adhered to.

While this is much simpler to accomplish when using a timber door it is still possible in uPVC doors, though you need to be very careful to avoid damaging the doors since this could cause damage to the warranty. The first step in the process is to take measurements of the door, making sure that it will be able to accommodate the new cat flap. If you have a standard uPVC panel, this should be easy. However in the case of made of composite or another kind of door, you may require more care.

The next step is to measure the size of your cat's belly. This is the height between the floor and the underside of your cat's stomach. It is important to locate a space on the door that allows your cat to move through easily. Once you have this information then you need to mark out the area using a pencil and a spirit level to be certain that the hole you will make will be a good fit for your cat.

After you've marked the area, it's time to cut the hole. It is crucial to take your time and use a jigsaw in order to ensure that the cuts are clean and smooth, not rough and uneven. This could cause damage to your door. You should also remember to wear safety glasses and a dust mask when using the jigsaw, as breathing in the dust could be hazardous to your health. After you have finished cutting the hole, you'll require sandpaper for smoothing the edges so that the cat flap can be easily inserted into the hole.

Cut a Hole

It can be difficult to fit the cat flap onto a door panel or sealed double glazing unit. You might be tempted to tackle the task yourself, but unless you have plenty of experience with DIY, it's recommended to hire an expert to complete the task for you. A mistake could not only be ugly and unattractive, but could also be an security risk. repairmywindowsanddoors could allow cold air in when the cat is outside and hot air out when the cat is inside.

Mark the hole position on the door using a pencil and spirit level. This will ensure that it is correctly positioned and aligns with the door's other parts. Make sure you have some sandpaper on hand to smooth any rough edges.

After the line is traced, you must cut the hole with the jigsaw. Remember to wear any safety equipment when working with an electric tool. If you are worried about the sound produced by the jigsaw, consider buying a cordless version which is quieter and more user-friendly to use.

You should only remove the material that is required to make the cat flap. A little bit of extra material is required to increase the thickness of the wall of the flap but removing more than this can cause problems and even cause damage to the door frame.


A upvc door may contain a metal frame or panel that will interfere with the microchip cat flap and in this case you'll need to make an over-sized hole to ensure that the metal does not touch the the cat flap, if this is done, it is important to fill in the oversize gap and make it watertight.

If you're looking to install a cat flap in windows made of double-glazed or upvc with frames made of metal it is necessary to speak with a specialist. They can provide you with a new piece of glass that has the hole already pre-made for the cat flap. This is less expensive than trying to fit a cat flap in an existing pane that wasn't designed for this purpose.

Place the Flap

Cat flaps allow your pet the freedom to come and go whenever they want and allow them to be comfortable in the home whenever they like. If you have an uPVC front door, it can be hard to install a cat flap. This is especially true if you do not own an glass panel which can be cut. If you're able to buy and install a new half-glazed uPVC panel, then it's possible to fit the cat flap to the doors. It's not as simple as simply cutting a hole in the door however, and there are some things you'll need first to ensure it's secure.

A composite, uPVC or GRP door panel is generally comprised of a plastic skin that is bonded to an insulating polystyrene core. It is essential to be cautious when cutting the material. This kind of door typically has a template which you can use as a reference for cutting the hole in the door.

After you have marked out the opening in your front door, it's time to install the cat flap. You can pick from a range of options, from simple push-button units to microchip activated ones that allow your pet in. No matter which type of cat flaps you choose, it's vital that your cat can use the flap comfortably without getting stuck in the rain.

A circular fitting is superior than a square one, as circles can be cut more securely into the glass. This is because square holes are more likely to break the glass when they're drilled. This is also a safer option, as you won't have to drill into the toughened glass which could break and hurt your pet or family members. This is especially crucial if you have children or elderly people in your home that could be injured by glass fragments.

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