Replacing a Cat Flap

If you have decided to upgrade to a microchip cat flap for your home and replace a cat flap, you might have the issue of finding a microchip cat flap to fit the hole left in your outside door or window left by the old cat flap or pet door.

The best thing to do would be to find a cat flap or pet door that requires a hole that closest fits the one you already have, as well as providing microchip reading technology.

Sometimes cat flaps break after a while and this can be a problem. Maybe you plan on replacing the cat flap or maybe you don’t need the cat flap because you no longer have a cat. The broken cat flap can look unsightly and more importantly, not work or just not good enough for yours and your cat’s needs!

Replacing a cat flap


Sureflap Microchip Cat Flap

(as of 03/28/2024 04:43 PST - Details)

Another option would be to choose a microchip cat door that is slightly larger, and then you would make the hole a little larger than the existing hole. This may be preferable to getting a new microchip cat door that was too small for the hole in your door or window. It is likely that your new cat flap requires a similar size hole to your old cat flap.

The only problem I can see is if you want a cat flap that is much smaller than the one you already have. In this case, there may not be anywhere for you to screw in your new microchip cat flap.

This is very simple to do. The only holes in the door would be the hole for the cat flap and holes for screws. These holes can be covered up by the new cat flap. Microchip cat flaps often provide a paper cut out template that can be stuck to your wall or door for you to use. This makes it really easy to fit your cat flap.

Cat flap installation

If you would like more information on cat flap installation then see posts on cat flaps in glass doors, brick walls and uPVC and wooden doors.

Microchip cat flaps can be fitted into all sorts of materials, like wood, uPVC, brick and glass. They can be simple and straightforward to fit and replace as long as you follow the instructions provided by the manufacturer of the cat flap and of course this site offers advice 🙂

Cat flap fitters

If you are unsure how to do this, it would be a good idea to hire a professional cat flap fitter to install your new microchip cat flap for you. Find a local pet door installation professional here.

replacing a cat flap

Removing a cat flap

If you have a cat flap you don’t want to have at all, then removing the cat flap itself is likely to be the easy part. There will still be a hole to fill in which would let in a draft, the rain and is obviously a security problem!

If the door is made out of wood or uPVC, I think it would be best to replace a panel of the door to cover the hole. You could just look to patch over the door, but I don’t think this will look very nice.

If the cat flap is in a window or patio door, then it would be best to get a glazier to replace the panes of glass. And if the cat flap you want removing is in a brick wall, then it would be best to consult with a professional on how to fill in the hole. This may require a builder or a bricklayer.