Cat Flap Installation Cost

The cat flap installation cost in the UK varies widely depending on the door or wall construction, the type of flap you choose, and whether specialist work such as replacing a double glazed unit is required. Most straightforward installations cost between £70 and £200 for labour. More complex jobs through glass or brick walls can cost £270 to £570 or more once the cat flap, specialist materials and replacement components are included.

This guide breaks down realistic UK prices, explains what drives the cost, and highlights practical considerations from a tradesperson’s point of view. Whether you are fitting a simple manual flap into a timber door or upgrading to a microchip unit in a glazed panel, understanding the scope of work will help you budget properly and avoid common pitfalls.

The prices in this guide are typical homeowner prices. Total figures include VAT where the installer is VAT registered. Some sole traders operate below the VAT registration threshold and will not add VAT, so always check how a quote has been presented. Unless stated otherwise, the total ranges include the cat flap, labour, standard fixings and basic sealing materials.

Typical Cat Flap Installation Cost in the UK

At its simplest, cat flap fitting is a short, low cost job. In reality, the price depends heavily on what you are cutting into. A joiner cutting timber is very different from a glazier ordering and fitting a new sealed unit.

Installation type	Typical labour cost	Typical total including cat flap and materials	Time required
Wooden door	£70 to £120	£95 to £235	1 to 2 hours
Plain uPVC panel	£90 to £150	£115 to £265	1 to 2 hours
uPVC door with suitable reinforcement	£120 to £200	£145 to £320	2 to 3 hours
Replacement uPVC panel installation	£90 to £150	£195 to £445	1 to 2 hours after panel delivery
Double glazed glass panel	£80 to £150	£240 to £570	7 to 14 day lead time, then about 1 hour to fit
Brick or block wall installation	£200 to £350	£270 to £550	3 to 5 hours

The totals above allow £20 to £100 for a flap in timber or uPVC and £40 to £120 for a microchip or specialist wall and glass model. They also include standard fixings and sealant. Glass totals include a replacement sealed unit costing approximately £120 to £300. Wall totals include £30 to £80 for a suitable tunnel liner and sealing materials.

If you supply the cat flap yourself, the installer should deduct the relevant product allowance. Confirm the exact model before ordering because some flaps require specific adaptors, mounting plates or wall tunnels. A cheap unit that is unsuitable for the chosen surface can increase the overall fitting price.

Minimum call out charges

Many joiners, handyperson services and glaziers apply a minimum call out charge because travel, parking and setting up tools can take longer than the cut itself. A typical minimum charge is £60 to £100 during normal working hours. In London and other high cost urban areas, it may be £90 to £150.

This explains why a simple twenty minute adjustment can cost almost as much as a one hour fitting. Ask whether the minimum charge includes the first hour, travel, fixings and VAT. Evening, weekend and urgent appointments usually cost more.

Regional price differences

London and much of the South East tend to sit at the top of the quoted ranges. Labour can be 15 to 30 per cent higher than in lower cost parts of the UK, particularly where congestion charges, parking or long travel times apply.

Prices in the Midlands, Wales, Northern England and parts of Scotland often sit near the middle or lower end. Rural work is not always cheaper because mileage and limited local trade availability can increase the call out charge. Island locations and remote areas may also carry delivery supplements for replacement glass or door panels.

VAT and waste disposal

A VAT registered contractor should make clear whether VAT is included. If a price is shown as £200 plus VAT, the homeowner pays £240 at the current 20 per cent rate. Ask for the final consumer total rather than comparing one VAT inclusive quote with another quote that excludes it.

Minor timber, plastic and masonry offcuts are normally covered by the installation price. Disposal of an old sealed glass unit or a complete uPVC panel may add £20 to £50. Larger quantities of masonry waste can add £30 to £80, particularly if the installer has to pay a licensed waste facility. Confirm that waste will be removed lawfully rather than left at the property.

What Affects Cat Flap Installation Cost

Type of door or wall

This is the biggest cost driver. Timber doors are usually the easiest and cheapest option, although boarded, ledged and braced, or decorative panelled doors still require careful positioning. The opening must not remove a critical joint, brace or narrow section of timber.

uPVC doors vary considerably. If the lower section is a plain removable infill panel, installation is relatively straightforward. Some panels contain foam insulation, decorative mouldings, internal sheets or metal reinforcement. The installer should identify the construction before drilling rather than assuming the panel is hollow plastic.

Reinforcement may sometimes be detected by examining the panel edges, checking manufacturer information, using a suitable detector, or making a controlled investigation in an area covered by the finished frame. Cutting through reinforcement without assessment can weaken the panel, expose sharp edges and invalidate the door warranty.

Composite doors present greater limitations. Their skins, insulating core, timber sections and reinforcement are bonded together as one door leaf. Many manufacturers do not approve retrospective openings. Cutting can weaken the slab, allow moisture into the core and invalidate security certification or guarantees. Unlike a panelled uPVC door, a composite door often has no separate lower panel that can simply be replaced.

Before altering a composite door, obtain written guidance from the door manufacturer where possible. If approval is unavailable, fitting through a suitable wall or replacing the door with a factory prepared product may be safer.

Glass is a different category entirely. You cannot cut into an existing double glazed unit without destroying its seal, insulation and safety properties. A new pane must be manufactured with a factory formed hole before the glass is toughened and assembled into a sealed unit.

Type of cat flap

Basic manual flaps can cost as little as £10 to £25. Magnetic and infrared models generally cost £25 to £70 and may require a collar accessory. Microchip models usually range from £55 to £120.

Microchip flaps prevent most unfamiliar animals from entering. Some models offer selective entry and exit, curfew controls or app based monitoring. Larger connected units can cost more than £150, excluding fitting and any required hub.

Most microchip flaps are battery powered. Check the expected battery life, the type of batteries required and whether the controls remain accessible once the unit is fitted. An installer may charge extra if a nearby socket or fixed electrical supply is genuinely required.

Access and location

Ground floor external doors are straightforward. Restricted side passages, fixed furniture, radiators, external steps and raised decking can make access more difficult. The installer needs clear working space on both sides of the opening.

Installing through a thick solid wall or a cavity wall adds labour and materials. The tunnel must match the full wall depth and provide a smooth, safe route with no exposed insulation or rough masonry.

Making good and finishing

A proper job includes sealing, draught proofing, and ensuring the flap sits square and weather tight. Poor sealing leads to heat loss and water ingress. If you want decorative trims, paint repairs, plaster repairs or replacement tiles, factor these into the quote.

External sealants must be compatible with the door, wall and flap materials. Internal gaps may need low expansion insulation or a rigid liner rather than being filled with excessive sealant. On timber doors, all exposed cut edges should be sealed or primed to reduce moisture absorption.

Cost Breakdown by Installation Type

Cat flap in a wooden door

This is the most common and budget friendly option. A joiner will mark out the opening, drill pilot holes, and use a jigsaw to cut cleanly through the panel.

• Labour, £70 to £120
• Cat flap unit, £20 to £100
• Sealant and fixings, £5 to £15

The total typical cost is £95 to £235 when the installer supplies the flap. If you provide a compatible unit, expect a labour and standard materials total of approximately £75 to £135.

Timber doors are forgiving, but care is still needed to avoid splintering and to maintain the structural integrity of the panel. The installer should check both sides before cutting because decorative mouldings or braces can affect the final position.

Solid timber edges should be treated after cutting. Exterior grade primer, paint or an appropriate wood sealer prevents moisture entering the end grain behind the flap frame.

Cat flap in a uPVC door

uPVC doors range from simple panel inserts to reinforced designs. A plain insert is similar to timber in difficulty, but reinforced doors require suitable cutting tools and more time.

A plain panel installation normally costs £90 to £150 for labour, £20 to £100 for the flap and £5 to £15 for fixings and sealant. This gives a total of £115 to £265.

A suitable reinforced panel can cost £120 to £200 in labour, with £20 to £100 for the flap and £5 to £20 for specialist blades, edge protection, fixings and sealant. The resulting total is approximately £145 to £320.

The presence of metal does not automatically mean the door can be cut safely. Reinforcement near hinges, locks or structural rails must not be removed casually. The tradesperson should establish whether the proposed opening will affect the rigidity, locking system or manufacturer warranty.

Replacement uPVC panels

If the existing panel is decorative, heavily reinforced, damaged or unsuitable for cutting, a common solution is to replace the lower panel with a flat insulated uPVC panel. A made to measure panel usually costs £80 to £180, depending on thickness, colour, finish and insulation.

• Replacement insulated panel, £80 to £180
• Labour to prepare and fit the panel, £90 to £150
• Cat flap unit, £20 to £100
• Sealant and fixings, £5 to £15

The total is therefore approximately £195 to £445, including VAT where applicable. Disposal of the old panel may add £20 to £40 if it is not included.

The fitter should measure the panel thickness, glazing bead arrangement and visible size accurately. The new panel must be compatible with the frame and securely retained by the existing beads. Keeping the original panel can be useful if you later sell the property and want to reinstate the door.

If you are considering replacing the whole door instead, this article gives realistic costs and options, How Much Does It Cost to Replace a uPVC Door in 2026? Supply and Fit Prices Explained.

Cat flap in double glazed glass

This is where costs jump. You will need a new sealed glass unit manufactured with a factory formed hole. A standard lead time is 7 to 14 days depending on size and specification. Bespoke shapes, tinted glass and decorative units can take longer.

• New sealed glass unit, £120 to £300
• Measuring and fitting labour, £80 to £150
• Cat flap unit and any glass adaptor, £40 to £120

The total typical cost is £240 to £570. This includes the cat flap and replacement unit but assumes uncomplicated access and a standard sized pane. Waste disposal may add £20 to £50.

The replacement unit must use the correct safety glass for its location. Glazing in doors and low level areas is generally a critical location under Building Regulations guidance. A competent glazier should specify compliant toughened or laminated safety glazing, with the appropriate permanent safety marking.

The opening is formed before toughening. An existing toughened pane cannot be drilled or cut afterwards. The glazier also needs the exact flap model because the hole diameter and adaptor requirements vary between manufacturers.

Always use a qualified glazier to ensure the integrity of the unit. Cutting corners here can result in condensation between panes, reduced insulation and safety risks.

Cat flap in a brick wall

Wall installations suit homeowners who do not want to alter doors or glazing. The installer core drills or carefully cuts through masonry, installs a liner or tunnel, and seals both internal and external faces.

• Labour, £200 to £350
• Materials including tunnel liner, £30 to £80
• Cat flap unit, £40 to £120

The total typical cost is £270 to £550. Plaster repairs, tile replacement, structural work or extensive waste removal may increase the price.

Wall tunnels and cavity construction

A wall opening must be assessed from both sides before work begins. The tradesperson should use suitable cable, pipe and stud detection equipment and consider likely service routes. Electrical cables may run vertically or horizontally from sockets and switches. Water, heating and gas pipes can also be concealed within walls or floor zones.

A detector does not replace careful investigation. Drawings, visible service positions and controlled pilot checks may all be needed. If there is any concern about a gas pipe or electrical cable, the relevant qualified trade should confirm the route before masonry drilling starts.

In a cavity wall, the tunnel should bridge the inner leaf, cavity and outer leaf without leaving loose masonry or exposed insulation. Cavity insulation displaced by drilling should be reinstated around the liner using a compatible material. The work must not create an open path for wind driven rain to cross the cavity.

The tunnel sections should fit securely and provide a continuous, washable internal surface. Long wall tunnels can make lightweight flaps harder for small cats to push, so use a model approved for wall mounting. Some products require separate tunnel extensions or a wall adaptor.

The external opening should be weathered carefully. Sealant alone should not be expected to correct a badly formed hole. The opening may need a slight outward fall at the base, appropriate sleeves, rigid trims and local making good to the render or brickwork.

Large or unusually positioned openings may affect structural masonry. Openings near corners, piers, lintel bearings or narrow wall sections need particular care. A builder should assess whether support or a lintel is required rather than treating every wall opening as a simple core drilled hole.

This approach also requires attention to damp proofing and insulation. The opening must not bridge the damp proof course or damage a damp proof membrane.

Labour, Timeframes and What to Expect

A straightforward door installation is usually completed within a couple of hours. Glass jobs involve two visits, one to measure and one to install the new unit. Wall installations can take half a day depending on thickness and access.

Trades involved include joiners, general builders, handyperson services and glaziers. For glass work, always choose someone experienced with sealed units and safety glazing standards. Masonry installations are best handled by a builder or installer with suitable core drilling and service detection equipment.

Before starting, the fitter should inspect the proposed location, compare the flap template with the door or wall, and confirm the finished height. They should protect nearby floors and surfaces before cutting.

After installation, the flap should move freely without rubbing. Electronic functions, locking modes and microchip recognition should be tested before the tradesperson leaves.

If electrical work is required for a powered flap, make sure it complies with Health and Safety Executive guidance on electrical safety. For most microchip flaps, battery operation avoids this issue entirely.

Choosing the Right Cat Flap

The choice of flap affects both cost and usability.

• Manual flap, cheapest, with no access control
• Magnetic or infrared flap, moderate cost, requiring a collar accessory
• Microchip flap, higher cost, reading your cat’s registered microchip
• Connected smart flap, premium cost, offering app controls or activity records

Microchip models are worth the extra for many households, especially in urban areas where stray animals are common. Check how many pets can be registered and whether exit control is available. Some units control entry only.

Measure your cat rather than choosing solely by breed. The opening needs sufficient width for the shoulders and enough height for comfortable passage. Overweight, elderly or less mobile cats may need a larger opening positioned closer to their natural walking height.

Correct Installation Height

The installation height should be based on the cat’s belly height, measured from the finished floor or external standing surface to the underside of the cat’s belly while it is standing normally. This allows the cat to step through rather than jump awkwardly.

Transfer that measurement to the bottom of the cut opening unless the manufacturer’s template states otherwise. Do not confuse the bottom of the opening with the bottom of the external flap frame, which may sit several centimetres lower.

For many adult cats, the bottom of the opening ends up approximately 10 to 15 cm above the standing surface. This is only a general guide. The cat’s actual measurement and the product template should determine the position.

Check both sides of the door or wall. An internal floor may be higher than an outside path, while steps or decking can create a much larger drop. A secure external step may be needed if the outside level is significantly lower.

Security Considerations

A cat flap creates an opening through the external envelope of the home, so its location should be considered carefully. Keep it away from door handles, keys, thumb turns and window catches that might be reached using an arm or tool.

On doors with multipoint locks, check that the cut will not interfere with rods, gearboxes or reinforced sections. Damage to the locking system can reduce security and lead to an expensive door replacement.

A locking flap offers better control than a basic swinging unit, but it should not be treated as equivalent to a security rated door. Some insurers ask about pet flaps, particularly if they are positioned near locks. Check your home insurance terms and tell the insurer if requested.

Microchip access can stop unfamiliar cats entering, but it is not designed to resist forced entry by a person. Select a robust model with secure fixings and do not leave keys or valuables within reach of the opening.

Wall installations can offer better separation from door locks. They should still be positioned where external access is visible and where the flap cannot be used to reach internal security controls.

Regulations and Compliance in the UK

Cat flap installation usually falls under minor work and does not normally require planning permission. However, restrictions can apply to protected buildings, leasehold properties and doors with a specific fire or security function.

• Listed buildings may require listed building consent before an external door, historic fabric or wall is altered
• Properties in conservation areas may be subject to additional planning controls
• Flats and leasehold properties may restrict external alterations under the lease
• Fire doors must not be altered unless a tested and approved solution maintains the required certification
• Structural wall openings must not reduce the stability of the building

For listed buildings in England, consult GOV.UK guidance on consent for work to a listed building and speak to the local planning authority’s conservation officer before cutting historic fabric. Listed building consent can be required even where ordinary planning permission is not.

The Planning Portal planning and building control information service provides general guidance and online planning services for England and Wales. It should not be confused with a UK Government department. Planning and building standards differ across England, Wales, Scotland and Northern Ireland, so use the relevant national or local authority guidance for the property.

Replacement glazing in doors and low level critical locations should follow Approved Document K guidance on protection from impact and safety glazing for work in England. The glazier should supply an appropriate safety glass specification and retain any required markings.

Work affecting insulation and external openings should also consider Approved Document L guidance on the conservation of fuel and power. A new sealed unit should have a suitable thermal specification, and gaps around a wall tunnel should not be left uninsulated.

Where a masonry opening could affect stability, refer to Approved Document A guidance on structural safety. Small openings are often uncomplicated, but their location, the wall construction and the loads above still matter.

Moisture resistance and weather protection are covered by Approved Document C guidance on resistance to moisture. Wall liners, external seals and cavity details should prevent rain penetration and avoid creating a damp bridge.

Fire doors

A pet flap should not be cut into a fire door unless there is a tested, certified and correctly specified system that preserves the complete door assembly’s fire performance. Ordinary cat flaps compromise the door leaf, smoke control and intumescent protection.

This is particularly relevant to flat entrance doors, doors protecting shared corridors, integral garage doors and doors in converted buildings. Do not rely on adding sealant or intumescent strips around a standard flap. Seek advice from building control, the responsible person or a competent fire door specialist and use another location where possible.

In newer homes, altering external doors or walls can affect warranties such as NHBC cover, so it is worth checking your documentation. Door and glazing manufacturer guarantees may also exclude retrospective cutting.

Draught Proofing and Energy Efficiency

A badly fitted cat flap can undo the benefits of good insulation. Gaps around the unit lead to heat loss, discomfort and higher energy bills.

Proper installation includes sealing the frame, ensuring a tight fit, and using appropriate weatherproof materials. If you want a deeper look at preventing air leakage, this guide is useful, How to Seal Around Windows and Doors for a Draught Free Finish in a UK Home.

Insulated flaps and double flap designs can reduce draughts in exposed locations. Brush seals and magnetic closure strips should sit evenly without preventing the flap returning to its closed position.

A wall tunnel also needs insulation around its perimeter. Filling the cavity carelessly can bridge damp or leave cold spots. Use materials compatible with the existing wall insulation and maintain the separation between the inner and outer leaves where required.

Practical Installation Checklist

• Confirm the door or wall type and whether it can be cut safely
• Check manufacturer guidance for reinforced uPVC and composite doors
• Choose the correct opening size for your cat
• Confirm that the flap and any adaptor suit the installation surface
• Check for hidden cables, water pipes, heating pipes and gas services before masonry drilling
• Base the height on the cat’s belly measurement
• Mark the measurement to the bottom of the cut opening unless the template directs otherwise
• Keep the opening clear of locks, reinforcement, braces and structural joints
• Specify compliant safety glazing for replacement glazed units
• Maintain cavity insulation and prevent damp bridging
• Use suitable sealant to prevent water and air ingress
• Avoid alterations to fire doors
• Test flap operation, microchip recognition and locking modes before finishing

If you are considering a DIY approach, this article gives a step by step overview, How to Fit a Cat Flap in a uPVC or Wooden Door Without Causing Draughts.

Questions to Ask When Comparing Quotes

A useful quote should describe more than a single total. Give each tradesperson the same information and ask the following questions so that you can compare like with like.

• Does the price include the cat flap, or must I supply it?
• Which exact flap model and adaptor have you allowed for?
• Does the quoted total include VAT?
• Is there a minimum call out charge?
• Are travel, parking and congestion charges included?
• Have you inspected the door for reinforcement or confirmed its construction?
• Will cutting affect the door warranty, security rating or locking system?
• For a replacement panel, what thickness, insulation and finish are included?
• For glass, does the price include measuring, a new sealed unit, safety glass, fitting and disposal?
• What safety glass specification will be supplied?
• For a wall, how will you check for concealed services?
• How will the cavity insulation and weatherproofing be maintained?
• Does the wall price include a complete tunnel liner and making good?
• Are internal plaster repairs, external render repairs or redecorating included?
• Will all waste and the old panel or glass unit be removed?
• What guarantee applies to the installation and supplied products?
• How long is the lead time, and how many visits are required?

Photographs can help with an initial estimate, but a glazier needs accurate site measurements before ordering glass. Wall installations and unusual doors may also require an inspection before a fixed price can be offered.

Be cautious of a very low quote that assumes every uPVC door is a simple plastic panel. Ask the installer to state what happens if reinforcement, hidden damage or an unsuitable panel is discovered.

Common Mistakes to Avoid

Cutting into reinforced or unsuitable doors

Many homeowners assume all uPVC doors are the same. Cutting into a reinforced panel without the right tools can damage the structure and void warranties.

Composite doors require even more caution. A cut through the bonded slab can expose the core, weaken the skins and compromise security. Manufacturer approval should be obtained before work begins.

Poor positioning

Installing too high or too low makes it uncomfortable for your pet and increases wear on the flap mechanism. Base the position on belly height and measure to the bottom of the opening, not automatically to the bottom of the outer frame.

Skipping proper sealing

This leads to draughts, water ingress and eventual damage to the door or wall. Timber cut edges need protection, while external wall openings require durable weathering rather than a thin cosmetic bead of sealant.

Trying to cut double glazed units on site

This is a serious mistake. It will destroy the sealed unit and create a safety hazard. The replacement must be manufactured with the opening and specified in suitable safety glass.

Ignoring concealed services

Drilling through a wall without checking for electrical cables, water pipes, heating circuits or gas services can cause injury and major property damage. Detection and an assessment of likely service routes should happen before any core drilling.

Ignoring security implications

A poorly chosen or badly fitted flap can become an access point. Always use locking features and consider placement carefully. Keep the opening away from keys, handles and accessible security controls.

Altering a fire door

Cutting an ordinary flap into a fire door can remove its tested protection. Do not alter flat entrance doors, garage fire doors or protected route doors without a suitable certified solution and professional approval.

Can You Install a Cat Flap Yourself

DIY is realistic for simple timber doors and some plain removable uPVC panels if you are competent with tools. Expect to spend £30 to £120 on the flap and materials and take a couple of hours.

You will need an accurate template, drill, suitable jigsaw and blades, screwdrivers, measuring tools and compatible sealant. Protect both sides of the door and check that the proposed cut is clear of braces, locks, glazing and reinforcement.

DIY is not recommended for glass, composite door slabs, reinforced doors or structural walls. The risk of costly mistakes is high. Professional installation may cost more upfront but prevents expensive repairs later.

Wall drilling also carries risks from silica dust, flying debris and concealed services. Suitable dust extraction, protective equipment and drilling controls are required. A heavy core drill can be difficult to control without experience.

If you are already planning wider door changes, such as installing glazed doors, this guide provides helpful context, How Much Does It Cost to Fit French Doors in the UK in 2026? Supply and Fit Prices, Frame Materials and Labour Explained.

Aftercare and Maintenance

Check the flap after the first period of heavy rain and during cold or windy weather. Look for water staining, movement around the frame or noticeable draughts. Early attention to a small seal failure can prevent damage to timber, plaster and insulation.

Clean the frame and tunnel regularly using products approved by the manufacturer. Dirt and cat hair can prevent magnetic seals or locking pins from working correctly. Avoid abrasive cleaners that may scratch clear plastic or damage electronic sensors.

Replace batteries before they are completely exhausted. Many microchip units provide a warning light, but the signal can be easy to miss. Keep a suitable set of batteries at home and check that the manual lock still operates.

Inspect external sealant once or twice a year. Cracked, loose or shrunken sealant should be removed and replaced with a compatible exterior product. Do not simply apply repeated layers over a failed surface.

On timber doors, monitor paint around the opening. Any exposed wood should be dried, prepared and resealed promptly. For wall tunnels, check that sections remain joined and that no sharp edges or loose debris have developed.

Retain invoices, glazing specifications, warranties and the flap instructions. If a replacement pane or panel was fitted, keep a record of its size and specification. Store the original uPVC panel safely if you plan to reinstate it later.

FAQ

How long does it take to install a cat flap?

Most door installations take 1 to 2 hours. Glass installations require a measuring visit, then a return visit once the new unit is manufactured. Wall installations can take 3 to 5 hours depending on thickness and materials.

Can a cat flap be fitted into any door?

Not every door is suitable. Timber and plain uPVC panels are usually manageable. Composite and reinforced doors require assessment and may not be approved for cutting. Glass doors need a new sealed unit with a factory formed hole.

How much does a replacement uPVC panel cost?

A replacement insulated panel typically costs £80 to £180 before fitting. Including labour, a cat flap, fixings and sealant, expect a total of approximately £195 to £445. Decorative finishes and unusual colours can cost more.

Will installing a cat flap affect insulation?

If fitted correctly with proper sealing, the impact can be limited. Poor installations cause significant draughts and cold spots. Choose an insulated flap and make sure wall cavities and panel insulation are maintained around the opening.

Do I need permission to install a cat flap?

Most houses do not require planning permission. Leasehold properties, listed buildings and some protected homes may have restrictions. Check the lease, freeholder requirements and local planning authority guidance before work starts.

Can a cat flap go in a fire door?

An ordinary cat flap should not be fitted into a fire door. Any opening must form part of a tested and certified system that preserves the complete door assembly’s fire performance. In most homes, choosing another door or a suitable wall is the practical answer.

Is a microchip cat flap worth the extra cost?

For many households, yes. It prevents access from most unfamiliar animals and provides better control than a manual flap. The higher upfront cost is usually justified by the convenience and access control it offers.

Who fits cat flaps into glass?

A competent glazier should measure, specify and install the replacement sealed unit. The glazier needs the exact flap model and must supply the correct safety glass for the location.

Should the installer remove the old glass or door panel?

Many installers include small amounts of waste, but old sealed units and full panels may carry a disposal charge of £20 to £50. Ask for waste removal to be stated clearly in the quotation.

Final Thoughts

Cat flap installation costs are relatively modest, but the type of surface you are cutting into makes a big difference to both price and complexity. Timber and simple uPVC jobs are quick and affordable, while glass and masonry require specialist handling and a larger budget.

A clean, well sealed installation will protect your home from draughts and damage, while ensuring your pet can come and go comfortably. Correct height, secure positioning, suitable safety glazing and careful cavity detailing all contribute to a durable result.

Compare quotes on the same basis. Confirm whether the flap, VAT, replacement panels, glazing, tunnel materials, making good and waste disposal are included. Cutting corners often leads to higher costs later, especially with glazing, composite doors or structural walls.

If you want the job done properly, with the right materials and no guesswork, you can post a job on BookaBuilderUK to receive quotes from vetted local tradespeople.