Cat Flap Co.

    Window Cat Flap Fitting

    Cat flap fitting for double-glazed, triple-glazed and single-glazed windows. We supply a new toughened glass panel with the cat flap hole pre-cut, then professionally fit it into your existing window frame. A great option when doors aren't suitable.

    Why Choose a Window Cat Flap?

    If your doors aren't suitable, or you'd rather keep them cat-flap-free, a window installation is the perfect alternative. It's also ideal for renters — the original window pane can be stored and reinstated when you move out.

    • New toughened glass panel supplied & fitted
    • Ideal when doors aren't suitable
    • Works with double & triple glazing
    • Keeps your doors untouched
    • Reversible — great for renters
    • SureFlap, Pet-Tek & PetSafe compatible
    Cat flap installed in a double glazed window

    Window Cat Flap FAQs

    Our Installation Services

    Glass Door Cat Flap FittingUPvc Door Cat Flap FittingComposite Door Cat Flap FittingWooden Door Cat Flap FittingBi-Fold Door Cat Flap FittingAluminium Door Cat Flap FittingPatio Door Cat Flap FittingFrench Door Cat Flap FittingDog Door FittingMicrochip Dog Door FittingAI & Prey Detection Cat FlapsConservatory Cat Flaps

    Areas We Cover

    ManchesterLiverpoolChesterWarringtonStockportCreweMacclesfieldWirralWrexhamStoke-on-TrentStaffordHuddersfieldBradfordLeedsView all areas →

    Window Cat Flap Guides

    Buyer's Guides

    Do I Need FENSA to Replace a Glass Unit With a Cat Flap? (UK Guide)

    FENSA certificates are for replacement windows and doors — not for swapping a sealed glass unit. Fitting a cat flap into a new toughened pane is classed as a repair and falls outside FENSA's remit. Here's exactly what FENSA's own website says, and what you actually need instead.

    Buyer's Guides

    Can You Put a Cat Flap in Double Glazing? Here's How It Works (UK)

    The short answer is yes — but not by cutting the glass you already have. Here's how cat flaps are fitted into double-glazed doors and windows the right way.

    Comparison

    Cat Flap in a Glass Door vs Window: Which Is Better?

    Can't decide between a glass door or window cat flap? We compare both options to help you choose the best location for your cat and your home.

    Buying Guide

    Best Cat Flap for Glass Doors: A Complete Guide

    The best cat flap for a glass door is the Pet-Tek Superior — designed specifically for glass with a round frame that reduces stress on the pane. For microchip security in glass, SureFlap and PetSafe fit into a pre-cut toughened panel using a round mounting adaptor. Toughened glass cannot be cut, so every install uses a brand-new factory pre-cut unit.

    Get a Free Window Cat Flap Quote

    Send us a photo of your window for a fixed-price quote within 24 hours.

    Request Your Free Quote Call 07764 442054