catflapfittersouthlondon.co.ukCatflap Fitter South London

South London Cat Flap In Double Glazing

Professional Cat Flap & Dog Flap Installation in Double Glazing

Looking to install a cat flap in a double glazed door or window? We are expert cat flap fitters with years of experience fitting cat and dog flaps into glass, including double glazing, single glazed doors, UPVC panels, and more.

As trusted Catflap Fitter South London cat flap installers, we supply and fit new cat flaps and dog flaps in a variety of surfaces, including single glazed doors. Whether you're replacing an existing flap or installing one for the first time, we guarantee a clean, secure, and professional finish.

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FAQs: Cat Flap Installation in a Double Glazed Unit, Window or Door

Question: How long does it take to install a cat flap in a single or double glazed door, and what’s the process?

Answer:

Our cat flap installation process is precise and hassle-free. Here’s what you can expect:

  1. Initial Site Visit & Glass Measurement
    We’ll arrange a visit to your home or property at a convenient time. During the visit, we’ll take exact measurements of your current glass panel and assess any patterned or obscure glass types. If your glass style is discontinued, we’ll suggest a suitable alternative.
  2. Glass Cutting & Cat Flap Preparation
    We custom-cut two new panels of 4mm float glass—either plain or with your chosen pattern. We then cut a hole in both layers to fit the specific cat flap or dog flap model you’ve selected. These glass panels are then sent for toughening to meet safety standards.
  3. Glass Toughening & Turnaround Time
    Your toughened cat flap glass is typically ready for collection within 3–5 working days, depending on the glass supplier’s schedule.
  4. Sealed Double Glazed Unit Creation/Manufactruing 
    Once toughened, the glass is sealed into a double glazed unit with the hole precisely positioned for the flap.
  5. Installation Appointment
    We’ll return at a time that suits you to install the new double glazed unit in place of the old one.
  6. Final Cat Flap Installation
    The cat flap (or dog flap) is securely installed on-site into the pre-prepared glass unit. Your pet can start using it immediately!

Why Choose Us for Cat Flap Installation?

  • Specialists in cat flaps for double glazing
  •  Fast turnaround: 3–5 day glass processing
  •  Supply and fit options available
  •  Trusted across Catflap Fitter South London and surrounding areas
  •  Friendly, qualified installers with years of experience

If you’re searching for “cat flap fitters near me” or need a quote for installing a cat flap in a single glazed or double glazed door, get in touch today.

Question
Can you install the cat flap in my existing double glazed unit?

Answer: 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).

Question
I already have toughened glass in my door can you install the new catflap in that?

Answer: Im afraid not as the glass is already toughened when you try to cut it, the glass breaks in to hundreds and thousands of prices.

Question
Can I buy any cat flap/catflap?

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

Question
Do You supply cat flaps/catflaps?

Answer: Yes - as cat flaps come in different sizes, models, automatic etc is 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 option prior to making a decision. We have added a link from our site to some of the most popular brands.

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