Cat Flap Door
Cat Flap Door Installation (Glass & Doors)
Give your cat safe, independent access without compromising the look or security of your home. At GlassHelper, we professionally install cat flaps into glass doors, uPVC doors, and selected panels—precisely positioned, neatly sealed, and matched to the exact model you choose (including microchip-enabled flaps).
Neat, Secure & Cat-Friendly Access
A well-fitted cat flap makes life easier for you and your pet—no more waiting by the door, and fewer scratches on frames. But the quality of the installation matters. Incorrect cut-outs, poor sealing or the wrong glass can cause draughts, leaks, or even weaken the panel. Our installers take precise measurements, follow the manufacturer’s template, and use the correct glazing specification so the flap operates smoothly, looks tidy and keeps your home secure.
For toughened glass or double-glazed units, the panel cannot be cut on-site. We supply a new made-to-measure glass panel with a factory-cut hole to suit your flap model—ensuring strength, safety and a perfect finish. We also advise on placement height so the flap is comfortable to use and aligned with your cat’s natural stride.
Ideal Applications
- Patio sliders and French doors (glass replacement with factory-cut aperture)
- Back doors and utility doors (uPVC or composite, where compatible)
- Single-glazed side panels or garage access doors
- Microchip-enabled flaps to allow only your cat in
- Weather-exposed locations needing robust sealing
Why Choose GlassHelper
- Correct glass specification: New toughened/laminated or insulated glass with factory-cut hole where required.
- Model matching: We template from your chosen flap (e.g., microchip flaps) for a snug, draught-resistant fit.
- Clean finish: Neat sealant lines, tidy trims, and careful alignment at the right height for your cat.
- Security-conscious: Options for laminated glass and secure screw-through fixings.
- Weatherproofing: Proper sealing to help prevent leaks and reduce draughts.
- End-to-end service: Survey, supply, installation, and aftercare guidance.
Technical Specifications
| Compatible Panels | uPVC doors, composite doors (case-by-case), single glazing, new toughened glass, new double-glazed units |
|---|---|
| Glass Options | Toughened (safety), laminated (security), insulated Low-E (in DGUs) |
| DGU Thickness | Common overall unit depths 20–28 mm (we match existing) |
| Cut-Out | Factory-cut in new glass to manufacturer’s template (round/square as specified) |
| Positioning | Height set to your cat’s chest/shoulder for comfortable access |
| Sealing & Fixing | Weatherproof sealant, screw-through collar (per model), neat internal/external finish |
Our Installation Process
- Consultation & Survey: Confirm panel type, measure, photograph, and assess best flap height and location.
- Specification: We match the flap model and create a precise factory cut-out plan (new glass where required).
- Fabrication: Replacement glass/insulated unit manufactured to size with the correct aperture.
- Installation: Existing panel swapped; flap installed per template with secure, weather-tight finish.
- Handover: Operation check, sealing review, cleaning tips, and advice on pet training.
Frequently Asked Questions
Can you cut a hole in my existing toughened or double-glazed glass?
No. Toughened and double-glazed units cannot be cut after manufacture. We supply a new panel with a factory-cut hole for safety and strength.
Do you fit microchip cat flaps?
Yes. We install most popular microchip models and size the aperture to the manufacturer’s template for a snug, secure fit.
Will it be draughty or leak?
We use the correct collar, screws and weatherproof sealant for your flap model and panel type to help ensure a tight, durable seal.
How high should the cat flap be?
We position the flap in line with your cat’s chest/shoulder height for comfortable entry and exit, adjusted for thresholds where needed.
Is laminated glass worth it for security?
Laminated glass adds a security layer and is recommended for street-facing or vulnerable locations. We’ll advise based on your property.