www.catflapfittersouthlondon.co.ukCatflap Fitter South London

Thorpe Need A Cat Flap Fitted

Cat Flap Fitting Services in TW20 Thorpe South London and surrounding area's

We specialise in professional cat flap installations for a wide range of surfaces, including:

 Cat flaps installation in glass  upvc-door-panels-for-catflaps Glass door cat flap installation

Over 30 Years of Industry Experience

Call Us: 0208 098 2021
Email Us: sales@catflapfittersouthlondon.co.uk

Why Choose Us for Your Cat Flap or Dog Flap Installation?

  • Trusted Experts: Over 30 years of experience in the glass and glazing industry, with 15 years focused on pet door installations.
  • Wide Range of Surfaces: We fit flaps in UPVC, wood, composite, metal, and double-glazed units (including patio and French doors).
  • High-Quality Materials: Replacement UPVC panels are reinforced for durability. Double-glazed units are manufactured in-house for precision and quality.
  • Affordable Pricing: We keep costs low and pass the savings directly to you.
  • Experienced Team: With 6 trusted fitters installing over 200 cat and dog flaps monthly, you’re in safe hands.
  • Customer Satisfaction: Don’t just take our word for it—read our glowing reviews!

Popular Cat and Dog Flaps We Install

We’re experienced in installing a variety of flaps, including:

How We Work: Cat Flap Installation in Double Glazing

If you need a cat flap in a double-glazed unit, we’ll replace the glass with a new custom-made double-glazed unit. This process takes 3–5 working days from measurement to fitting. All units are manufactured at our factory to ensure the highest standards.


Contact us today 0208 098 2021 to discuss your requirements or to get a free, no-obligation quote!

Cat Flaps in Wooden Doors - Cat Flaps in UPVc Panels - Cat Flaps in Glass & Double Glazing - Dog Flaps

How to train your cat or dog to use their new pet flap

Some cats will approach a cat flap with curiosity, while others may be a bit more wary. Here is five easy steps to help get your cat using its new cat flap.

Cold every time you have to get up and let the cat in or out - woken in the middle of the night - sound familiar, then its possibly time you fitted a cat flap/dog flap!

Click for step by step proven guide
How to train your cat or dog to use their new pet flap

What our customers say

Choosing the right pet flap for your Pet

Choosing the right pet flap for your Pet

There are a variety of pet flaps available. Our most popular brands include Catmate, Staywelland Sureflap, available in the following types:

4 WAY PET FLAP
2 WAY PET FLAP
Infra-Red Collar Pet Flap
Magnetic Collar Pet Flap
RFID MICROCHIP PET FLAP

See more on the cat flap fitter page

Frequently asked questions

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No - The cat flap/catflap must be glass fitting and circular as it is very expensive to cut a square hole, although not impossible.

Cat flaps come with a kit that includes a paper template that guides you exactly where to drill. With the help of markings, drill a hole in to each corner of the template. Once you have done with drilling the holes, you can get the shape of your cat flap accordingly. These are great for wooden, UPVC/plastic and metal doors, but would recommend a professionaal for anything to do with glass.

No - The glass in the door should already be toughened and you can not cut toughened glass, so we will need to replace the unit (worth hanging on to the double glazed unit we take ut as should you move or need to put this back at a later date will save you some money).

Yes - as cat flaps come in different sizes, models, automatic etc. it is best to talk to us first in order that you can ask all the questions you require answered on the most popular brands. We offer a selection of cat flaps and pet doors, we highly recommend that you take a brief look at the options prior to making a decision. We have added a link from our site to some of the most popular brands.

It varies, but usually takes around 1 hour to install a cat flap in wood, UPVC, metal or a composite door, if it is a cat flap in glass or a double glazed unit, the glass will be toughened safety glass and usually take 3-5 working days to remanufacture and about 30 minuites to install again subject to type and style of door or frame.

We're afraid not as the glass is already toughened when you try to cut it and the glass would break into hundreds of thousands of pieces!

  1. We would arrange to visit your home or property at a convenient time to get an exact measurement of the current double glazed unit in the door, check what pattern you have and offer a like for like or an alternative if the glass is no longer manufactured.
  2. We would then cut 2 new pieces of 4mm float glass (plain or pattern of your choice) to the exact size as measured, cut a hole in both pieces of glass for the cat flap and then have the glass toughened. (What is toughened glass).
  3. Approximately 2-3 day later the cat flap glass will be ready to collect from the toughening plant.
  4. We will then create a sealed doubel glazed unit which will have the hole perfectly placed for the installation of the cat flap.
  5. We will then arrange a convenient time with you to replace your current double glazed unit with the new cat flap ready double glazed sealed unit.
  6. The cat flap is installed once at the property

Just be prepared to be a bit more patient with older cats who may not have used a cat flap before. Use a food reward for your cat and try playing in close by so they get used to being nect to it. Leave the flap open so they can see outside as curiosity will entice them closer until they eventually go through it. 

Areas we cover

Postcodes   W10   W5   TW11   DA2   TW10   W13   SW5   DA13   BR7   SE21   SE17   SW12   SW1   TW17   TW3   BR6   SE15   SE10   TW16   SW4   SE22   SE16   TW15   SE13   TW9   SE23   BR2   SW15   TW14   W14   BR3   BR8   W1   DA10   DA15   SW11   BR1   SE12   DA5   SW10   W1M   TW18   SW7   DA3   W4   SE1   DA12   SW9   SW13   SE25   SW16   SW6   TW4   SW1A   SE9   DA8   W9   TW5   DA16   DA17   SE11   TW8   TW20   SE4   SE26   SW17   W2   SE24   SW18   DA6   DA11   W3   SE7   SE5   SE8   SE20   DA4   DA14   DA1   SE18   W7   BR4   W12   DA9   SW2   SE14   TW7   SE19   SE3   TW13   SW14   SE6   SW20   TW1   SE2   TW12   W6   TW19   BR5   W11   SE27   SE28   SW19   SW3   W8   SW8
Towns   Hounslow   Greenwich   City of Westminster   Oxford Street   Parsons Green   Bayswater   Perry Street   Holland Park   Upper Norwood   Kennington   Vauxhall   Vauxhall Bridge   Downe   Betsham   Green Street Green   Putney Bridge   Clapham Junction   Osterley   Denmark Hill   Marble Arch   Brompton   Sunbury   South Darenth   Ealing   Westbourne Green   Pimlico   Brixton   Colliers Wood   Surrey Quays   Ladywell   St John's   Clapham South   Uxbridge Road   Chiswick High Road   Grove Park   New Ash Green   Oxford Circus   Hounslow Central   Littleton   Sydenham   Harvel   Bromley   Cheyne Walk   Clapham North   Queen's Gate   Hanworth   Coldblow   Woolwich   Mottingham   Royal Oak   Hampton   Fulham Broadway   Sands End   Maida Hill   Ham   Waterloo   Drayton Green   West Hill   Victoria   Mayfair   Bedford Park   Shorne Ridgeway   Stanwell Moor   Bexley   Belvedere   High Street Kensington   Stockwell   Farnborough   East Dulwich   West Dulwich   Belgravia   East Acton   Westway   Cromwell Road   Ravenscourt Park   Culverstone Green   Barons Court   Fawkham Green   Anerley   Chislehurst   Eltham   Longfield Hill   Wandsworth Town   Streatham Common   Orpington   Hawley   Marble Hill   North Kensington   Horton Kirby   Englefield Green   Foots Cray   Southwark   Well Hill   Cromwell Road   Notting Hill Gate   Brockley   Peckham   Putney   West Ealing   Crystal Palace   East Putney   Thorpe   Brentford   Lesnes Abbey   Upper Halliford   Camer   Boston Manor   Bellingham   St Mary Cray   Penge   Ealing   East Dulwich   Egham   Erith Marshes   Avery Hill   Southfields   Honor Oak   Thamesmead   Shooter's Hill   Paddington   Hayes   Chislehurst Caves   Merton   West Norwood   Nine Elms   Goodge Street   Horseferry Road   Lower Sydenham   Gloucester Road   Shepperton   North Dulwich   Bromley Common   Slade Green   Wandsworth Common   Chiswick House   Norbury   East Sheen   Laleham   Deptford High Street   Kensal Town   Ladbroke Grove   Eden Park   Chelsea   Castlenau   Charlton   Barnes Bridge   Merton   Great West Road   Western Avenue   Heston   Streatham Hill   Ashford   Ham House   Bickley   Northfleet   Acton   Olympia   Nunhead   Lewisham   New Kent Road   Newington   Putney Vale   Stanwell   Hammersmith & Fulham   Putney Heath   Wraysbury   West Acton   Lambeth North   Syon House   Streatham   Lee   Hounslow West   East Bedfont   Kew   Canary Wharf   Keston   North Cray   Battersea   Leaves Green   Chalk   Coldharbour Lane   Barnes   Rotherhithe   Hyde Park Corner   Hextable   Lambeth   Horniman Museum   Richmond   Knightsbridge   Blackheath   Brompton   Wandsworth Road   Brook Green   Norwood   Norwood Junction   North Ealing   White City   South Kensington   Regent Street   Copse Hill   South Lambeth   East Wickham   Acton Town   London Bridge   Crofton Park   Shepherds Bush   Westminster   Hither Green   Bushey Mead   Meopham Green   Summerstown   Acton Green   Warwick Park   Istead Rise   West Heath   Bond Street   Hounslow   Ladbroke Grove   Herne Hill   Teddington   Abbey Wood   Upper Sydenham   Wimbledon Park   South Acton   West Brompton   Kingston upon Thames   Westbourne Park   Edgware Road   Chelsea   Bexleyheath   Sole Street   Deptford   West Kensington   Walworth   Hyde Park   Warwick Avenue   Wandsworth   Oval   Tulse Hill   Longfield   Erith   Crayford   Catford   Furzedown   Meopham   Green Street Green   Well Hall   Riverside   West Kilburn   Hartley   Cobham   Honor Oak Park   Westbourne Grove   Camberwell   Hythe End   Earl's Court   Fulham Palace Road   Notting Hill   Mortlake   Sutton at Hone   Dartford   Boston Manor   Maida Vale   Down House   St James's Park   Locksbottom   Soho   Bedford Park   Bermondsey   Balham   Chiswick   Hammersmith   Osterley Park   Blackheath Park   Chiswick Park   Fulham Palace Road   Westminster Bridge   Rocks Lane   Cranford   Clapham Common   Lambeth   Feltham   Southfleet   Ealing Broadway   Ealing Common   St Paul's Cray   Chelsea Embankment   Cooper's Hill   Sidcup   Knockholt Station   Warren Street   Goldhawk Road   Tooting Broadway   South Ealing   Dulwich   Stockwell   Tulse Hill   Twickenham   Hounslow East   New Cross   Tottenham Court Road   Richmond Park   Brompton Road   Wimbledon Common   Greenhithe   Lavender Hill   Chelsfield   Wilmington   Gravesend   Western Avenue   Clapham   Marylebone   Sloane Square   South Wimbledon   Shooter's Hill   Elthorne Park   Docklands   Latimer Road   Upper Tooting   Great Portland Street   Stone   Grove Park   Bostall Woods   Crystal Palace   Roehampton   Welling   Kensington & Chelsea   Park Lane   Lancaster Gate   Turnham Green   Ladywell   Bayswater Road   Swanley   Old Kent Road   Raynes Park   New Barn   Isleworth   Loughborough Junction   Stamford Brook   Gunnersbury   Elephant & Castle   Gipsy Hill   Bermondsey   Kidbrooke   Marylebone   West Wickham   Luddesdown   Vigo Village   Thamesmead   Lane End   Hammersmith   Sydenham Hill   Crockenhill   South Street   Lambeth   Tooting 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