Hemel Hempstead Cat Flap Fitters
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Aston Sandford Cat Flap In Double Glazing

Cat Flap Fitting Services in HP17 Aston Sandford Hemel Hempstead 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: 01442 773475
Email Us: hello@hemelhempsteadcatflapfitters.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 01442 773475 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

Trusted professional fitters
Cat flaps in double-glazing
4 Way Cat Flaps
Cat flaps in double-glazing
Microchip Cat Flaps
Local & reasonably priced

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
Sure flap video

Sure flap video

Discover how to program your cat's microchip into the SureFlap Microchip Cat Flap. Have some tasty treats on hand for your cat to make the process easier and follow the steps in this easy-to-follow video.

One of the most popular cat flaps 

With SureFlap microchip cat flaps being one of the most popular brands to buy today, we are delighted to be a recommended supplier and fitter for your ease of use. Most people will employ a company like ours if you are installing a cat flap into glass, double glazing, or a metal door.

The microchip cat flaps allow only your cat(s) into your property and will restrict unwanted visitors from neighboring homes.

Recommended Sure Flap Cat flap fitters in Hemel Hempstead are reachable on 01442 773475.

Watch video

Frequently asked questions

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

By providing a photo of the glass we can give you the exact price. If you are unable to provide a photo of the glass, then kindly provide some rough dimensions. Please measure from edge of glass to edge of glass you can see left to right and top to bottom.

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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. 

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

Yes you can, if it is single or double glazed, then the glass will need to be replaced by an expoerianced glazier or glass company who can offer you a price for the replacement cost.

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).

Do You Fit Into Cavity Walls.

We DO NOT install through cavity walls; we recommend that you hire a professional builder for this type of installation.

Cat flap installation in a brick wall has many pitfalls; it is messy, expensive and time-consuming. there may be pipes or wires we can not see.

If this is your preferred route or only option you have for your home, we strongly advise you to consult with a qualified builder before considering installing a pet door through a wall, always ensure they have relevant building experience, qualifications, insurance and that they can comply with all building regulations. 

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.

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Areas we cover

4 way cat flap   Cat flap fitters   Cat Flap In Double Glazing   Cat Flap In UPVC Door   Cat Flap in Wooden Door   Cat flap patio door   Cat flap single glass door   Dog flaps   Double glazed door   Gallery   Get in touch   Glass patterns   How to link a Microchip Sure Flap   How to train a cat to use a cat flap   Microchip DualScan cat flap   Microchip Sure Flaps   Pet flap installation   Toughened safety glass
Services   Cat flap installers   Cat Flap Fitter   Cat Flap   cat flap fitters   Cat Flap Fitting   Cat Flap in Glass   Cat Flap in wooden Door   Cat Flap in UPVC panel   Catflap   Catflap Fitter   Dog Flaps   cat flap Fitter In Double Glazing   Cat Flap Installation   Cat Flap In Double Glazing   Dogflap   Need a cat flap fitted   Microchip Cat Flap   Double Glazing Cat Flap Fitter   Dog Flap Fitting In Double Glazing   Microchip Cat Flap Fitter   Microchip Sure Flap   Sure Flap Cat Flap
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Counties   Hertfordshire   Buckinghamshire
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