Can you put a cat flap in a glass door?

We've got a uPVC back door with a double glazed panel and want to add a cat flap. Can a cat flap be fitted into the glass itself or does it have to go in a door frame?

Asked by Sharon on 1st Jun 2026
Expert Trade Answers
"Yes but could need to be a new glass unit made for it depending on age of glass etc"
Answered on 1st Jun 2026 - Member since Nov 2023 - report
"HI, you can fit a pet flap in to a double glazed unit no problem at all. You will need a new glass unit made with the hole cut in, then it's a case of fitting the pet flap."
Answered on 1st Jun 2026 - Member since Jun 2024 - report
"The best solution would be have the glass sealed unit removed and have a pvc insulated panel fitted with a pet door"
Answered on 1st Jun 2026 - Member since Mar 2020 - report
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