cat flap installation in glass

Cat Flap Installation in Glass Door

Each cat flap installation in glass will have slightly different ways, as they differ between brands and products. There are, however, similarities between them all though. First, you should set up the microchip pet door for your pets. This can be done after installation but is best done beforehand. See here for how to set up for your microchip cat flap.

If you do not feel comfortable to follow the advice here to install a cat flap in glass or the manufacturer’s instructions, then click here to find a cat flap fitter in your local area for pet door installation.

Put simply, cut a hole into your wall, door or window. Then the microchip pet flap can be fixed around it. For step by step instructions on pet door installation into a glass door or window, see below.

Cat flap installation in glass door or window

For a microchip cat flap in a glass, such as a double glazed door or glass window, a professional glazier or pet flap fitter will be required to cut a circular hole in the glass. The size of this hole will vary depending on the size of your microchip pet door. A single pane of non-toughened glass could probably be cut in-situ, or in its place, by a professional cat flap fitter. However, a double glazed window or door would have to be removed for cutting.

You must tell your professional glazier or pet door fitter that a non-metallic spacer bar should be used in double glazed glass. Any metal in the glass would reduce the range, and effectiveness, of the microchip cat door.

Measure the height of your pet’s stomach on your door. If you have more than one pet that will be using the microchip pet flap, make sure that the smallest measurement from your pets’ stomachs to the floor is used. As there is a circular hole in the glass, add 12cm or five inches to the height between your pet’s stomach and the floor. Use this value for the centre of the circle off the floor. If the microchip cat flap you have bought does not provide any instructions on this.

Mounting adapters

This should be at 20cm or eight inches off the bottom of the glass to allow room for the mounting adaptor. For most microchip pet doors in glass windows and doors need a mounting adaptor. There will be a mounting adaptor for both sides of the glass. Place a bead of all weather sealant around the two mounting adapters.

Place one of the mounting adaptors, with the sealant, with the inside part of the microchip cat flap placed through the hole first. Then the outside mounting adapter and outside frame of the microchip cat door. It would help if you had somebody to help you on the other side of the door for this part.

Also make sure the sealant is on the glass side and use a hand screw driver. Don’t use a power screw driver, for the screws to make sure you don’t over tighten them.

Glass window cat flap installation video

For more information, have a look at Sureflap’s video for a cat flap installation in glass window.

Let me know what you guys think about this post for installing your microchip cat flap in a glass door or window.

Take a look at our recommended microchip cat flaps, the Sureflap Microchip Pet Door or the Sureflap Microchip Dual Scan.

Summary
Cat Flap Installation in Glass Door
Article Name
Cat Flap Installation in Glass Door
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Publisher Name
Top Cat Flaps

17 thoughts on “Cat Flap Installation in Glass Door”

  1. Regarding Cat Flap Man’s video for a cat flap installation in glass window:

    The door in the video appears to be aluminium framed. But beware, a great many double glazed doors have uPVC frames which are comparatively flexible. For this reason they are designed to be diagonally braced by the glazing to prevent the door from “dropping”. To achieve this plastic packers should be wedged into place along both edges of the glazing in two corners of the glazing – the bottom corner nearest the door hinge and the diagonally opposite corner.

    This critical information is not made clear in the video. In fact it is misleading 54 – 59 seconds in where packers are slipped in the wrong corner and near the centre of the bottom edge of the window.

  2. Helpful article and the video was informative as well. Installing a door that works with your pets existing microchip is genius. If anyone is concerned about other critters getting into your home with your manual pet flap, this is a great idea and necessary for safety. Will look into. Thanks!

  3. Hi Sean,

    As a cat and dog owner myself I found this post extremely useful. The video definitely makes it clear and within my grasp. Just a question when installing them into the wall, the video showed what appeared to be a metal shroud on the outside when the job was finished. Is this a custom made part or an option to buy when purchasing the door?

    Much appreciated,
    Adam.

    1. Hi Adam, glad to hear from you. Do you mean the wall installation video? If you are installing your cat flap into a brick wall, then you will need what’s called a tunnel extender, because of the depth of the wall. Tunnel extenders are easily available and they just fit in between the ends of the cat flap in the hole in the wall. I go into this in more detail in this post, http://topcatflaps.co.uk/cat-flap-install-brick-wall/. Hope that helps! Thanks Sean

  4. Wow! I’ve never heard of such a thing but it is ingenious. I will have to figure out where to get one in Canada. Thanks for such an informative article.

    1. Hi Ray,

      My apologies if I have used an image that is on your website. Care is taken to ensure that images shown have permission gained. Please let me know which images are from your website.

      Regards,

      Sean

  5. Regarding your paragraph above headed: Mounting adapters

    Having fitted over 500 SureFlaps (my business is Four Paws Door) I have to say I don’t agree with your advice regarding the mounting adaptor: “This should be at 20cm or eight inches off the bottom of the glass to allow room for the mounting adaptor”.

    In general I would allow 60mm of glass between the bottom of the circular hole cut for a SureFlap and the bottom edge of the glazing. This allows sufficient clearance for the SureFlap mounting adaptor while locating the cat flap as low as possible for your cat’s comfort.

    I hope this is helpful to your readers.

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