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  • Bifold Doors Cost

    Trying to find out how much new bifold doors will cost? In this article we provide a detailed breakdown of bifold door prices for different materials and sizes. This makes it easy for anyone to calculate the cost of fitting bifold doors in their home.

    Average Cost of a Bifold Door Cost:

    Depending on the complexity of the job, it usually takes: 1 – 2 days

    £3,000

    How Much Does a Bifold Door Cost?

    The average cost of installing bifold doors ranges from £1950 to £7200, with the price depending on the material and the number of doors you choose. For instance, Timber bifold doors tend to cost from £2000 for 3 door system and up to £4200 for 5 doors, while uPVC bifold doors range from £1950 for 3 doors and £3240 for 5 doors.

    Another popular option is aluminium bifold doors which are slightly more expensive and are normally priced at £3150 for 3 doors and up to £7200 for a 5-door system.

    There are several other factors that affect the cost, such as the dimensions of the doors as the larger the width and height the more you will pay. The location of the property may also determine the final cost, as tradesmen in London and the South of England may charge more than those in northern areas.

    Bifold Door Prices

    The table below lays out the various costs for different bifold door materials and sizes:

    Timber

    No. of Doors Avg. Cost
    3 (1.8m – 2.4m) £2000 to £2800
    4 (2.7m – 3m) £3040 to £3430
    5 (3.6m – 4m) £3680 to £4200

    Aluminium

    No. of Doors Supply Cost
    3 (2.1m – 3.5m) £3150 to £4670
    4 (3.6m – 4m) £4300 to £5700
    5 (4.2m – 5m) £5260 to £7200

    uPVC

    No. of Doors Supply Cost
    3 (1.79m – 2.4m) £1950 to £2800
    4 (3m – 3.5m) £2790 to £3500
    5 (3.6m – 4m) £3560 to £4240

    Supply Only Costs

    If you would prefer to buy bifold doors from the retailers yourself, then you should consider the following supply costs which do not include the price of labour.

    Timber Bifold Door Costs

    No. of Doors Supply Cost
    3 (1.8m – 2.4m) £1400 to £2200
    4 (2.7m – 3m) £2240 to £2630
    5 (3.6m – 4m) £2680 to £3200

    Aluminium Bifold Door Costs

    No. of Doors Supply Cost
    3 (2.1m – 3.5m) £2550 to £4070
    4 (3.6m – 4m) £3500 to £4900
    5 (4.2m – 5m) £4260 to £6200

    uPVC Bifold Door Costs

    No. of Doors Supply Cost
    3 (1.79m – 2.4m) £1350 to £2200
    4 (3m – 3.5m) £1990 to £2700
    5 (3.6m – 4m) £2560 to £3240

    Additional Costs

    There are several other costs you may want to consider when hiring a professional to install your bifold doors, including:

    Window Cleaning Cost

    To ensure your bifold doors and windows are clean and aesthetically-pleasing, you may want to consider hiring a window cleaner to wash your exterior windows regularly. The average cost of hiring a window cleaner is typically around £40 to £50 depending on the size of your home and the number of windows you have.

    New Windows Cost

    If you have new bifold doors fitted, why not have new windows installed to enhance the look of your property's exterior. The typical price for new window installation ranges from £2175 for a terraced home with 4 new casement windows up to £5400 for a 4-bedroom detached property with up go 15 windows.

    Rendering a House Cost

    To protect your home's exterior walls and create a smooth finish, you may want to look into re-rendering. This a type of external plastering which provides a protective layer to brick walls while also enhancing the aesthetic. The average cost of rendering a house tends to range from £2500 to £3500 for a small bungalow while a 4-bedroom detached house could cost up to £8300 for a full rendering of all external walls.

    Paint Exterior of House Cost

    Another great way to boost kerb appeal is by updating the paint on your property's exterior walls. This may just involve re-applying the same paint and making touch-ups or choosing a completely different colour to help make your home stand out.

    The cost of painting your home exterior will start from around £550 to £750 for a terraced property, £700 to £1000 for a semi-detached house and £900 to £1500 for a detached home.

    New Patio Cost

    To enhance the look of your exterior even more you may want to consider laying a patio, so you can walk out of your bifold doors onto an aesthetically-pleasing pathway in the front or back of your home.

    New patio installation prices will depend on the material you choose along with the size of your pathway. For instance, the cost to lay a stone patio ranges from £800 for a small size up to £4600 for a large patio, while small brick patios cost around £550 and larger installations are normally priced at £1800.

    Other options include slate patios which start from £900 for a small pathway up to £3800 for a large patio and concrete patios which cost anywhere from £550 for a little patio up to £3600 for a bigger patio.

    Labour Costs and Timescales

    The average labour cost for installing bifold doors is normally around £600 to fit 3 door panels in one day, while a 5-door system may take around 2 days to complete and typically costs around £1000. The price normally includes hiring two tradespeople to complete the job, as it speeds up the installation.

    You also want to consider hiring a structural engineer to assess whether the wall where the doors will be installed is secure enough to hold them. They normally charge around £50 to £90 per hour.

    The overall cost of labour and timescales will vary depending on the extent of the job. For example, if a new opening needs to be made, then this may add on another day and increase the price. The price will also be dependent on the level of access, as tradesman may charge more for a difficult job.

    What is a Bifold Door?

    Bifold doors (aka folding sliding doors) were first patented in 1998 by the Australian-based company Centor who created the world's first bi-fold door system with weather sealing abilities that offered a seamless transition between indoors and outdoors.

    They are a relatively new option in the UK, although they are now a popular feature in contemporary homes thanks to recent technical improvements in structural materials and glazing.

    These advancements have made it possible to completely open up the back of the house with mostly glazing, while still being able to meet current building regulations.

    bifolddoors1

    Typically, bifold doors have 2 or more standard size glass doors that are connected and open in a concertina style - folding flat when fully open. Unlike sliding patio doors, bifold doors open fully, which will open up your living space, connecting with your terrace or patio while flooding the interior with natural light.

    Bifold doors have become more popular as they are very easy to install, so it helps to keep labour costs low, while also being low-maintenance and easy to operate, unlike other patio doors.

    They are also extremely secure as they usually feature multiple locking points which help to prevent intruders from gaining access to your property. These doors also allow for great views and on nice days extending your living space out into the garden, or onto a deck or patio.

    Cost Factors of a Bifold Door

    Before investing in bifold door installation, you need to consider the following cost factors that will affect the final price:

    Bifold Type

    One of the most important elements you need to consider when having new bifold doors installed is the type of bifold you want. There are three main types – timber, aluminium and uPVC – which all have different qualities and vary in price.

    If you have a low budget in mind, you may want to opt for uPVC with supply prices ranging from £1350 to £3240 and timber bifold doors which cost around £1400 to £3200. For a long-lasting and robust installation, you may want to consider aluminium bifold doors which are normally priced at £2550 to £6200.

    Door Size

    Another important cost-affecting factor is the door size, as there are multiple options available that fit different budgets. For example, smaller sizes such as 1.79m to 2.4m range from £1350 to £2200, while medium-sized bifold doors between 2.7m and 3.5m cost around £2240 to £4070. For larger door panes which range from 3.6m to 5m you should expect to pay around £2680 to £6200.

    Property Location

    Where you live is also a contributing factor to the overall installation price, as the rates set by tradesman will vary depending on the location. For instance, joiners in London tend to charge around a minimum of £36 per hour, while tradespeople in northern areas normally have a set rate of around £20 per hour.

    Accessibility

    Another important aspect that will affect the cost is the level of access to the area where the doors will be installed. If this area is hard to reach due to a wall being in the way or uneven ground, then you may end up

    What's Involved in Installing a Bifold Door?

    To help you understand the process of hiring a professional tradesman to install bifold doors, here is a step by step breakdown of what the job entails.

    1. Checking the Structure

    2. Before the doors can be installed, a structural engineer will check that the wall is able to support the new installation. This usually involves drawing up plans and installing a lintel beam for horizontal support.

    3. Preparing the Door Sill

    4. Once the structure has been deemed sound, then the door sill can then be attached. If yours does not come pre-assembled, then the tradesman will use silicone to attach the parts followed by drilling pilot holes in the fixing holes on the underside of the sill to secure it.

    5. Assembling the Frame

    6. After the sill has been assembled, the door installer will then start to fit the frame which will normally be attached using woodscrews and gaskets along with silicone sealant which should be applied to each end of the head assembly, the tenon and jamb assembly.

    7. Joining the Sill and Frame

    8. The next step involves attaching the head and jamb assembly together followed by screwing it to the sill. They will then check that all the frames are square and even before tightening any loose screws.

    9. Fixing the Frame

    10. Once everything has been assembled, the door installer will then fit the frame onto the wall opening while making sure the head track fixing holes are in the correct position. If everything is right, they will then pre-drill the lintel, followed by removing the head frame and pre-drilling any masonry above the lintel.

    11. Installing the Packing

    12. After the positioning has been checked, they will then install around 5mm of packing around the head and top of the opening and the bottom of the sill. The tradesman will then use a spirit level to check everything is in line before securing the packers by drilling into the prepared holes and attaching frame fixing bolts.

    13. Attaching the Sill and Head

    14. The next step involves establishing a fixing point and drilling for a masonry plug in order to attach the sill ties. The head should then be installed by screwing in the outer fixings first before lightly tightening the screws to a point where the lintel and head are almost touching.

    15. Fitting the Hinges and Pivots

    16. To ensure your bifold doors open properly, the installer will fit the carrier hinges and pivots onto the top track making sure that the adjustment screws are accessible at the bottom of the doors.

    17. Mounting the Bifold Doors

    18. Before installing the doors, the tradesman will check all the other fixtures and fix anything they need to. Once they are happy that everything is in the right place, they will mount the doors onto the frame and hinges.

    bifolddoors2

    Can I Install a Bifold Door Myself?

    Bifold doors are not a typical DIY project as they are more complex than traditional sliding doors so you really should seek professional advice on the products available. You may also have to deal with planning permission issues and structural concerns due to the sheer size and weight of the doors. This can often mean expert calculations will be required to specify some structural steel to ensure the building is safe and the door frame will not be overloaded or distorted.

    However, in some cases the wall can be prepared by a builder to an architect’s specification, just leaving the fitting of the doors into the cavity. This ensures that the structure is safe and makes fitting bifold doors possible on a DIY basis for those with the right experience.

    If you do not have any experience with fitting external doors, then you should leave it to the professionals, as you may try to hang the doors without installing a structural support, which could result in expensive wall damage.

    Choosing Bifold Doors

    To help you choose the right bifold doors for your home, here is a breakdown of the different types of bifold doors, along with the costs and pros and cons of each.

    uPVC Bifold Door Cost

    uPVC bifold doors are a low-budget option which cost around £1950 to £4240 to install. uPVC stands for unplasticised polyvinyl chloride, which is a type of hard and resistant plastic.

    bifolddoors3

    Some of the advantages of opting for uPVC bifold doors is that they are one of the cheapest options available and are also very low-maintenance.

    This bifold door material has the highest U-value rating of 1.7W per m2, which means it is the least efficient of all. It is also prone to warping and is susceptible to weakening during adverse weather conditions.

    No. of Doors Supply Cost
    3 (1.79m – 2.4m) £1950 to £2800
    4 (3m – 3.5m) £2790 to £3500
    5 (3.6m – 4m) £3560 to £4240

    Timber Bifold Door Cost

    Timber bifold doors can be made up of various types of wood including solid timber, hardwood and engineered wood although the latter is the most popular option.

    This material is one of the robust options available, especially if the bifold doors are built using engineered wood which is also long-lasting. It is also an average U-value rating of 1.4W per m2, making it more efficient than uPVC doors.

    bifolddoors4

    Cheaper timber doors do not last well exposed to the UK weather, whereas the engineered timbers and hardwood products are more durable but also pretty expensive. Though timber does offer that traditional appearance and natural beauty of wood, the downside is timber bifold doors will require regular painting or varnishing over the years.

    No. of Doors Supply Cost
    3 (1.8m – 2.4m) £2000 to £2800
    4 (2.7m – 3m) £3040 to £3430
    5 (3.6m – 4m) £3680 to £4200

    Aluminium Bifold Door Cost

    Aluminium bifold doors are one of the most durable options which typically feature a thermal break made of a less conductive material which helps to increase thermal conductivity.

    Aluminium has the most efficient U-value rating of all bifold door materials at just 1.3W per m2. It is also a much stronger material so can offer much slimmer profiles, in addition, the powder-coated finish requires virtually no maintenance, so there is no need to varnish or paint every few years.

    bifolddoors5

    Aluminium bifold door panels can also be made wider than timber doors so you can sometimes need fewer doors within the same frame size, which saves money.

    The downside of choosing aluminium bifold doors is that they are costly, so may not be the best option if you have a low budget in mind. Aluminium is also known as a poor thermal conductor which means it may be susceptible to heat loss if there is no thermal break installed.

    No. of Doors Supply Cost
    3 (2.1m – 3.5m) £3150 to £4670
    4 (3.6m – 4m) £4300 to £5700
    5 (4.2m – 5m) £5260 to £7200

    Alternatives to Bifold Doors

    If you feel as though bifold doors are not the best option for you, then are various other patio door types to choose from including:

    Sliding Doors Cost

    Sliding doors are categorised by the horizontal sliding function with some featuring a disappearing effect behind a wall when slid open. The average cost of sliding doors is normally around £500 to £1500.

    The main advantage of sliding doors is that they offer the best views due to the amount of glass on show. The increased glass also makes it much more efficient as it enhances thermal efficiency.

    bifolddoors6

    Sliding doors can be hard to install and usually require specialist equipment if fitted on the first floor or above. Also, if installed in an existing opening, they will not open completely.

    French Doors Cost

    French doors offer a traditional style door system which opens outwards on a hinge. The average price of installing French doors is around £900 to £1925.

    One of the benefits of choosing French doors is that they can be customised to suit both traditional and contemporary properties. They also help to boost kerb appeal as they tend to make homes look bigger and also increase natural light.

    bifolddoors7

    A downside of opting for French doors is that they require a significant amount of space for the doors to open, so if you have limited room outside, then French doors may not be the best option. They also have poor energy efficiency rating and are also prone to leakage as the seal is not as robust as that of bifold doors.

    Building Regulations & Planning Permission for Bifold Doors

    If you are installing bifold doors in an existing open then typically you do not need to apply for planning permission or building regulations approval. However, if you need a brand new opening or plan to widen the opening to accommodate your bifold doors, you may need to submit a planning permission application, although this will depend on your local authority's regulations. An application will also be required if you live in a listed building or conservation area, which should cost around £200.

    If you are creating a new opening for your bifold door installation, you will need to ensure that the structure where they are being fitted is secure. You should also make sure that the lintel used is at least 150mm at each end with a minimum opening width of 300mm.

    Cost of Removing Bifold Doors

    If you wish to replace your old bifold doors with a brand new model, then you will need to have your existing doors removed. To hire a professional to remove your bifold doors, you should expect to pay around £160 to £220 per day.

    bifolddoors8

    If you plan to remove them yourself, you will have to consider the cost of waste disposal, which typically ranges from £70 to £120.

    Hiring Someone to Install a Bifold door Checklist

    Before hiring someone to fit your bifold doors, you should consider the following checklist:

    • Check their accreditations which may include a Level 2 Diploma in specialist installation occupations for door systems.
    • Make sure they have at least 5 years' experience installing bifold doors.
    • Request evidence of previous work in the form of photographs or reviews.
    • Check that they have public and employer's liability insurance.

    FAQs

    How are bifold doors supported?
    Bifold doors are supported by a strong lintel beam that is able to hold the weight of the doors. To ensure you choose the right size lintel beam, you should consult with a structural engineer who will determine which lintel is best.
    How secure are bifold doors?
    The majority of bifold doors come fitted with a multi-point locking system along with an inline system which prevents intruders from lifting the doors out of their mechanism in order to gain entry.

    To enhance the security further, you may also want to opt for a twin point lock which features a handle in the centre of the bifold doors which can be operated from the top or bottom. They not only offer a secure solution but also provide an attractive aesthetic.
    What's the difference between Aluminium and UPVC Bifold doors?
    Aluminium doors are stronger so can be made with thinner frames, whereas UPVC Bifold doors are a cheap option with thicker frames. UPVC bifold doors, particularly cheaper models, often also have exposed hinges on the outside, which is an obvious security risk.

    Aluminium doors are also available in much greater maximum width, again due to the inherent strength of the material. Aluminium bifold doors are also available with lower thresholds and can be ordered in multiple places.
    Do I have to slide all the panels in a bifold door to open to use the doors?
    No. A traffic door is available, which allows you to use just one door without moving the other panels. A traffic door is a worthwhile option in the UK as it allows you to operate the door during the winter months without letting in all the cold air!
    Will bifold doors increase my heating costs?
    You may think that you would lose a lot of heat by knocking a huge hole in the wall and installing glass. However, in reality, modern bifold doors actually improve your home's energy efficiency thanks to the materials used, especially when using energy-efficient glass.

    Bifold doors, which are installed as a replacement to patio doors, will also increase the energy efficiency as older patio door systems don't perform as well as the latest bifold door units.
    Can I install bifold doors myself DIY?
    If you're a DIY expert, it is possible and tempting to install bifold doors yourself to save some money. But unless you have previous experience installing these doors, it is not recommended. You would be better to find a professional installer to do it for you.

    Bifold doors are more complex than a regular patio or French door. In addition, if you encounter problems at a later date, there can sometimes be issues with the door manufacturer claiming the faults are due to installation rather than a manufacturing problem.

    Sources

    https://centor.com/us/hardware-systems/folding
    https://www.windowsguide.co.uk/pros-cons-bifold-doors
    https://www.justvaluedoors.co.uk/bi-folding-doors.html

    Last updated by MyJobQuote on 22nd October 2020.

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