24/7 365 days a year: For an Instant Free Quote Call 01702 346304

Cat Flaps In Greenwich

Call us now for expert cat flap fitting, 30 – 90 minute response time with no call-out fee. We can fit in single and double-glazed glass, UPVC, and wood doors.

Call Us On: 01702 346304
Trustpilot
accreditation
Over 20 years of experience in the glazing industry.
Services at Montrose Glass

Cat Flap Fitting in Greenwich

Greenwich sits on the south bank of the Thames in south-east London, combining a well-preserved maritime heritage with a mix of Victorian terraces, Georgian townhouses, and modern riverside developments. The area spans from the historic town centre near the Royal Naval College out to residential neighbourhoods like Blackheath, Eltham, and Woolwich.

Montrose Glass provides cat flap fitting in Greenwich and is available 24 hours a day, 7 days a week, 365 days a year. Whether you need a cat flap installation in Greenwich for a uPVC door, a timber door, or a glass panel, our glaziers carry the materials and equipment to complete most jobs on the same visit. Our vans are stocked with glass that can be cut and prepared on site, so you are not waiting days for a replacement pane to be ordered in.

Greenwich has a particularly varied housing stock. Many properties in areas such as Blackheath and Greenwich town centre are Victorian or Edwardian terraces, often with single-glazed sash windows or older sealed units that need careful handling. Newer riverside developments around Woolwich and Greenwich Peninsula tend to have modern double glazing. Whatever your property type, our glaziers assess the installation on arrival and advise you on the most suitable approach before any work begins.

Why Choose Montrose For Cat Flap Installation?

a house infographic
1 Hour Emergency Repairs
open 365
Open 24/7, 365 Days A Year
a badge
Fully Qualified & Experienced
work guaranteed
All Work Guaranteed
No Call-Out Fee

What Does Cat Flap Installation in Greenwich Involve?

Pet door installation in Greenwich covers several different scenarios depending on where you want the flap fitted. The most common options are a uPVC or timber door panel, a single-glazed window or door light, a sealed double glazed unit, or a wall. Each surface requires a different method, and our cat flap glazier in Greenwich will confirm the right approach once they have seen the installation point.

For a cat flap fitted in glass in Greenwich, whether that is a single pane or a double glazed unit, a new pane is manufactured with the hole pre-cut and the flap already fitted before it is brought to site. This is the correct method because cutting into an existing sealed unit on site would break the gas-filled seal and cause the glass to mist. A new toughened glass unit is made to the exact dimensions of your existing frame, so the finished installation is weatherproof, secure, and thermally efficient from day one. For doors, the same principle applies: the cat flap is fitted cleanly into the panel without compromising the structural integrity of the door.

When it comes to choosing the right flap, you have several options. A microchip cat flap reads your cat’s existing microchip and only allows your pet through, which is useful in areas like Blackheath or Eltham where neighbouring cats could otherwise wander in. A locking cat flap lets you set restricted access times, while a standard magnetic or manual flap provides a straightforward solution at a lower cost. Our glazier will talk through the options with you so you can make the right choice for your home and your pet.

man installing glass window
Speak To A Glazing Expert For A Quote Now
24/7, 365 days a year: 01702 346304
Expert Glass Door Services

Why Does Professional Cat Flap Fitting Matter in Greenwich?

Attempting to cut into an existing double glazed cat flap unit without the right equipment will break the hermetic seal between the two panes. Once that seal fails, warm moist air enters the cavity and the glass mists permanently. The unit then needs replacing regardless, so a professional installation from the outset saves both time and cost. For any work involving a double glazed cat flap, a glazier supplies a new toughened glass sealed unit with the flap already incorporated, and fits it into your existing frame. This keeps the window compliant, weatherproof, and thermally sound.

An ill-fitting flap is a separate but equally common problem. If the hole is not cut precisely, or if the flap is not correctly sealed around the edges, you will notice draughts, water ingress, and in some cases, increased noise from outside. In older Greenwich properties, particularly Victorian terraces where frames may have settled over time, precise measurement is critical. Our glaziers assess the frame condition before committing to a size, and all glass cutting is carried out to the exact measurements taken on site.

Professional installation also matters from a security perspective. A poorly fitted pet door in a door panel can weaken the panel or create a gap that compromises the door’s resistance to forced entry. Our team fits all cat flaps to manufacturer specifications, and where toughened glass is required, only toughened glass is used. You can also find out more about our broader Window Glazing services in Greenwich if you need additional work carried out at the same time.

Montrose Glass have experience in installing cat flaps for windows in Greenwich to give your pet a custom entrance to your home where needed.
Areas Covered
Locations Near You
Client Testimonials
Here are some testimonials from our valued customers in Greenwich who have experienced our exceptional services. As proud members of the Guild of Master Craftsmen, we prioritise delivering a cost-efficient service that guarantees quality workmanship. If you have any inquiries or require further information, please don't hesitate to contact us.
“
Superb service. The guys were out on time and the job was completed within an hour, including a full clean up. Would definitely use again.
Russell Haselhurst
“
We used Montrose Glass for a construction project in London recently. They were fantastic. Service was great, as was the workmanship. The 2 glaziers are a credit to the company. Also, they turned up and carried out the works during heavy snowfall without complaint. We would definitely recommend them.
Christine S
“
I needed to get some work done for quite a while on my house, but kept putting it off - after a couple of calls to Montrose Glass I felt comfortable discussing it and they made it so easy and simple that I\'ve decided to get it all sorted. Great service and I have already got them quoting my mums house and will have no worries referring them on in the future.
Tom Bell
View More

Frequently Asked Questions About Cat Flap Fitting in Greenwich

The questions below cover the most common things homeowners in Greenwich ask before booking a cat flap installation. Each answer is written to give you a clear, straightforward response you can act on straight away.

Yes, Montrose Glass covers the full Greenwich borough, including areas such as Blackheath, Eltham, Woolwich, and Greenwich town centre. We are available 24 hours a day, 7 days a week, 365 days a year, and our nationwide UK coverage means we can also assist if you have properties in neighbouring boroughs. There is no restriction on where in Greenwich we can attend.

In most circumstances, a glazier can reach you in Greenwich within 30 to 90 minutes of your call. We operate 24/7, so the same response time applies whether you contact us during the day, in the evening, or at the weekend. Response times can vary depending on traffic and current demand, but we aim to keep waiting times as short as possible.

There is no call-out fee for cat flap fitting in Greenwich. The glazier’s visit and on-site assessment are free of charge, and you will be given a clear price before any work begins. You are under no obligation to proceed after the assessment, so there is no financial risk in calling.

Yes. A cat flap cannot be cut into an existing sealed double glazed unit without breaking the hermetic seal, which would cause permanent misting of the glass. Montrose Glass supplies a new toughened glass sealed unit with the cat flap already fitted and installs it into your existing frame, keeping the window sealed, secure, and weatherproof. A glazier will measure your existing unit and advise on the options in Greenwich at no call-out charge.

Montrose Glass can install a range of cat flaps across Greenwich, including standard manual flaps, locking cat flaps, and microchip cat flaps that read your pet’s existing chip to prevent other animals entering. The right choice depends on your property, your pet, and your security preferences. Our glazier will explain the options and help you select the most suitable type before any work is carried out.

Montrose Glass are the professional, reliable and cost-effective fast response glazing specialists for your glass and glazing needs - 24 hours a day, 365 days a year.

Credit Cards

Quick Links
Contact Us
01702 346304
sales@montroseglass.co.uk

© Copyright 2026. All rights reserved to Montrose Glass.
Registered Office: Montrose Glass, Suite 8, Weston Chambers, Weston Road, Southend on Sea, Essex, SS1 1AT. Registered in the UK: 07910895
Call Now01702 346304