Draught-proof Cat Flap?

Many of my clients have asked me about draught-proofing their cat flap. 

Well, such a product doesn’t exist on the market! You’ll have to live with getting a draught from the cat flap--whether it is a brick or a glass installation. It’s just something you’ll have to learn to live with.

As a cat owner, I hardly even notice it anymore. 

The moment the cat flap is opened, it creates a draught. So, no cat flap manufacturer can claim to have a draught-proof flap and be called reliable. There are two possible solutions to the annoying draught: 

  • Hotel revolving door: A flap designed like a hotel revolving door, that never actually opens helps with the draught while letting the cat out. But, such a design wouldn’t be practical 
  • Blowing down hot air: Supermarkets and high street shops blow down hot air at the door to keep the cold air from entering. This, too, isn’t a practical solution for a kitty door!

    Cat flaps were invented centuries ago. 

    The draught is simply a trade-off for allowing your cat access to the outside world. An alternative to that would be to leave a door or a window open for your kitty. However, this is worse in terms of draught and also impractical--especially if you’re at work or it is the middle of the night. 

    In this case, the only viable option is to have a house cat and not allow it out.

    With a cat flap, your feline friend gets to enjoy the freedom to go in and out without bothering you. Of course, there’s also the added advantage of the less foul odour of the litter tray.

    That being said, cat flap manufacturers try their best to minimise the draught by installing draught excluders which are brush-like materials around the flap meant to insulate. These work well when the flap is not in use. 

    Do keep in mind that the cat flap must be easy to open and light so that the kitty is able to push the flap open. It can’t be sealed tight as it must swing both ways, or it would defeat the object.

    Another thing to consider is the current thickness of your glass pane or wall – insulated cavity wall depth of about 400mm or about 28mm for double glazing. When you’re putting a hole in these to install a cat flap, you are essentially replacing it with a thin layer of plastic that isn’t as insulated or thick as the double glazing or wall. 

    We generally get this question about draught by new cat owners who’ve just gotten their first kitten or rescue cat. With time, you get accustomed to the draught and it doesn’t bother you anymore. 

    Did you find this blog post informative? Let us know in the comments section!