Aluminium Door Cat Flap Fitting
Cat flap and pet door installation in aluminium doors — Origin, Smart Systems, Aluk, Schuco and older aluminium frames. We fit into the glass or the infill panel, never the frame.
Two Routes, Depending on Your Door
Fully glazed aluminium door. We measure the sealed unit and order a matching toughened double-glazed pane with the cat flap hole cut before toughening, then swap it in and fit the flap.
Aluminium door with a solid infill panel. We cut the panel directly, reinforce and seal the aperture, and fit the flap in a single visit.
- Origin, Smart Systems, Aluk, Schuco & legacy frames
- Frame and thermal break never cut
- Matched glass spec and spacer colour
- Weathertight seal and drainage checked
- Microchip flaps fitted — SureFlap, PetSafe, Pet-Tek
- 3-year workmanship guarantee
Aluminium Door Cat Flap FAQs
Our Installation Services
Cat Flap by Door Brand
Aluminium & Glass Guides
Best Microchip Cat Flap UK 2026: Tested & Ranked by a Real Fitter
We fit hundreds of microchip cat flaps every year across the UK — into glass, uPVC, composite, aluminium and bi-fold doors. This is our 2026 ranked buyer's guide based on what actually lasts, what causes callbacks, and what we'd fit in our own homes. Not sponsored, not affiliate-driven rankings — the order is genuinely how we'd choose today.
How-To GuidesHow to Replace an Old Cat Flap Without Damaging Your Door or Glass
Start by measuring the existing hole, not the old flap. Most standard cat flaps use a 170mm circular cut-out, so a like-for-like swap is straightforward. If the new flap is larger you can enlarge the aperture in uPVC, composite, wood and aluminium — but never in glass, where a new pre-cut toughened panel is the only option.
Installation GuidesCat Flap in a Bi-Fold Door: Yes — Here's How (UK Installer's Guide)
Bi-fold doors look stunning — and yes, you can fit a cat flap in them. Here's how professional installers do it: a new toughened glass unit with the aperture pre-cut, fitted discreetly in the corner of the panel. Pet-Tek works beautifully.
How-To GuidesCat Flap for Triple Glazed Doors — Is It Possible? (UK Guide)
Yes, you can fit a cat flap into a triple glazed door — but it requires a brand-new factory-cut triple-glazed unit with the flap aperture pre-cut. We never cut existing toughened glass. Triple glazing adds around £120–£200 to the cost versus double glazing and takes 2–4 weeks for the new unit. Here's exactly how the process works and what to expect.
Get a Free Aluminium Door Cat Flap Quote
Send a photo of your door and we'll confirm the method and price within 24 hours.