Replacing patio doors can make a noticeable difference to your home, from improving insulation and security to making your garden more accessible. However, the cost can vary considerably depending on the type, size, and material of the doors you choose.
As a general guide, replacing patio doors in the UK can cost around £1,500 to £5,000 or more, including installation. Standard uPVC doors tend to sit towards the lower end of this range, while larger aluminium sliding or bifold systems can cost considerably more.
The condition of the existing opening, the glazing specification and any structural work required can also affect the final price. Understanding these factors can help you budget accurately and compare quotes more effectively.
How Much Does It Cost To Replace Patio Doors?
The cost of replacement patio doors depends largely on the style and material selected. A straightforward replacement using a similar-sized door may be relatively simple. Meanwhile, changing the layout or widening an opening can significantly increase the project cost.
As an indicative guide, typical UK prices are:
| Patio door type | Typical replacement cost |
|---|---|
| uPVC sliding patio doors | £1,500–£3,000 |
| Aluminium sliding patio doors | £2,000–£4,500 |
| French patio doors | £1,500–£2,500 |
| uPVC bifold doors | £2,000–£4,500 |
| Aluminium bifold doors | £3,000–£7,500+ |
These figures are estimates rather than fixed prices. A smaller, standard-sized replacement will usually cost less than a large, bespoke installation with several panels.
In all cases, the best way to establish the actual cost is to have the opening measured and assessed before choosing a door.
Patio Door Replacement Cost by Type
Different patio door styles offer different combinations of price, appearance, accessibility and performance.
Sliding Patio Doors
Sliding patio doors are a popular choice for homes because they provide wide access to the garden without requiring space for the doors to swing open.
A standard uPVC sliding door is generally one of the more affordable replacement options, with prices often starting at around £1,500 for supply and installation. Larger doors, additional panels and higher-specification glazing can push the price towards £3,000 or more.
Aluminium sliding doors typically cost more. However, their strength allows manufacturers to create large glazed areas with slimmer frames, making them particularly suitable for contemporary homes.
French Patio Doors
French doors consist of two opening panels and can provide a traditional alternative to sliding systems. They are often less expensive than large sliding or bifold doors because they use a simpler configuration.
Replacement French patio doors can cost approximately £1,500 to £2,500, depending on the material, glazing and specification.
They are particularly suitable where there is enough space for the doors to open inwards or outwards. If space is limited around the doorway, a sliding system may be more practical. These models give you much more space for moving, as well as placing furniture or plants.
Bifold Patio Doors
Bifold doors consist of multiple panels that fold and stack to one side, creating a particularly wide opening between the home and garden.
They are usually more expensive than standard patio doors because they involve more panels, specialist hardware, and a more complex installation.
uPVC bifold doors may cost around £2,000 to £4,500, while larger aluminium systems can reach £7,500 or more.
For homeowners looking to create a modern, open-plan connection with their garden, however, bifold doors can offer a very different result from a conventional patio door.
What Affects the Cost of Replacing Patio Doors?
The door itself is only one part of the overall cost. Several factors can affect the price of a replacement project.
Door Size
Larger doors require more materials, glazing, and hardware, so they generally cost more. A standard replacement may also be considerably cheaper than installing a wide opening with several glazed panels.
The number of panels matters too. A two-panel sliding door will normally cost less than a large four-panel system.
Material
The material you choose has a significant effect on the price.
uPVC is usually the most budget-friendly option. It requires relatively little maintenance and can provide good thermal performance.
Aluminium tends to have a higher initial cost but offers strength, durability and slim sightlines. This makes it popular for larger glazed openings and contemporary properties.
Timber can provide a traditional appearance and may work particularly well with period properties. However, it generally requires more maintenance than uPVC or aluminium.
Glazing
The type of glass used can also affect the overall price. Modern double glazing can improve insulation and reduce draughts compared with older single-glazed or poorly performing doors.
You may also have options such as low-emissivity glass, toughened safety glass or other specialist glazing specifications. These can increase the initial cost but may provide additional benefits depending on the property.
Condition of the Existing Opening
If the existing opening and surrounding structure are sound, replacing the doors can be relatively straightforward.
Problems such as damaged brickwork, damp, structural movement, or an unsuitable threshold can add to the cost because these issues may need to be addressed before the new doors are installed.
Structural Alterations
Replacing an existing door with a similar-sized unit is usually simpler than creating a much wider opening.
For example, replacing a standard sliding door with a larger bifold system may require alterations to the opening and additional structural support. This can substantially increase the cost of the project.
Before committing to a design, it is worth establishing whether the existing opening can accommodate the new doors.
Does the Material Affect Patio Door Replacement Costs?
Choosing between uPVC, aluminium, and timber is not simply a matter of appearance. Each material has different characteristics that can influence both the upfront price and long-term maintenance requirements.
uPVC Patio Doors
uPVC is a popular choice for homeowners who want a practical and relatively affordable solution.
Modern uPVC doors can provide good thermal insulation, are resistant to moisture and generally require little maintenance. They are available in a range of styles and finishes, making them suitable for many different properties.
Aluminium Patio Doors
Aluminium doors typically have a higher initial cost than uPVC alternatives, but they offer excellent strength and can accommodate large areas of glass.
Their slimmer frames can also create a cleaner, more contemporary appearance. This makes aluminium particularly attractive for homeowners who want to maximise natural light or create a stronger visual connection with their garden.
Timber Patio Doors
Timber remains an appealing option for traditional properties and homeowners who prefer a natural material. It’s a universally charming look that’s universally admired.
However, timber doors generally require more ongoing maintenance. They may need periodic painting, staining, or other treatment to keep them looking and performing their best.
How Much Does Patio Door Installation Cost?
Costs often involve a host of expenses, not just the door’s price. Installation is an important part of the bill and should always be considered when comparing quotes.
Some online prices refer only to the doors themselves, while others include fitting. A professionally installed replacement can cost more initially but should ensure the doors are correctly aligned, sealed and secured.
Straightforward patio door replacement may be completed relatively quickly, sometimes within a day. More complicated projects can take longer, particularly where structural alterations or extensive preparation are required.
When comparing quotes, check whether the price includes:
- Removal of the existing doors
- Disposal of old materials
- The new frame and glazing
- Installation and sealing
- Handles and locking mechanisms
- Thresholds and finishing
- Any required structural work
- VAT
A quote that looks cheaper at first may not represent better value if important parts of the installation have been excluded.
Are New Patio Doors Worth the Cost?
For many homeowners, replacing old patio doors is about more than improving their appearance.
Modern doors can provide better insulation, helping reduce unwanted heat loss and draughts. Improved locking systems can also provide greater peace of mind, while new frames and glazing can make the doors easier to operate.
There are aesthetic benefits too. Replacing dated or damaged doors can transform the appearance of a room and make it feel brighter, particularly when larger glazed areas are introduced.
New patio doors can also make outdoor spaces easier to use. Sliding doors provide convenient access without requiring additional floor space. Meanwhile, bifold doors can create a much wider opening when fully folded back.
Whether the investment is worthwhile ultimately depends on the condition of your existing doors, your priorities and the type of replacement you choose.
How to Keep Patio Door Replacement Costs Down
Replacing patio doors does not necessarily mean choosing the cheapest product available. A better approach is to find the right balance between upfront cost, quality and long-term performance.
Getting several detailed quotes is a good starting point. Make sure each quote covers the same work so you can make a meaningful comparison.
Keeping the existing opening and choosing a replacement of a similar size can also reduce costs. Structural alterations can be one of the most expensive parts of a larger door project.
It is also worth considering the long-term requirements of each material. A cheaper door may not necessarily provide the best value if it requires more maintenance or needs replacing sooner.
Finally, do not overlook installation quality. Even a high-quality door can perform poorly if it is incorrectly measured or fitted.
What Should a Patio Door Replacement Quote Include?
A detailed quotation should make it clear exactly what you are paying for.
At a minimum, check that it includes the doors, frame, glazing, hardware and installation. If your existing doors need to be removed, confirm whether removal and disposal are included.
If the project involves widening the opening, ask whether structural work is included or priced separately. The same applies to making good around the installation, such as repairing plasterwork, brickwork or flooring.
It is also worth checking the warranty provided for both the doors and the installation. A clear quotation can help prevent unexpected costs later.
Patio Door Replacement FAQs
How long does it take to replace patio doors?
A straightforward replacement can often be completed within a day. Larger installations or projects involving structural alterations may take longer.
Can I replace patio doors without changing the opening?
In many cases, yes. If the replacement doors are designed to fit the existing opening, extensive structural work may not be necessary. However, the opening should be assessed and accurately measured before ordering new doors.
Are aluminium patio doors more expensive than uPVC?
Generally, yes. Aluminium doors usually have a higher initial price than uPVC, although they offer excellent strength, slim frames and a contemporary appearance.
Do I need planning permission to replace patio doors?
Replacing patio doors with similar doors in an existing opening will not usually require planning permission.
However, different rules can apply if you significantly alter the opening, extend the property or live in a listed building or designated area. Building Regulations may also apply depending on the work involved.
It is best to check the requirements for your specific property before starting work.
How long do patio doors last?
The lifespan of patio doors depends on their material, quality, installation and maintenance.
Well-made modern doors can provide many years of service, but worn hardware, damaged frames, failed glazing or persistent draughts can all indicate that replacement may be worthwhile.
Get a Quote for Patio Door Replacement
The cost of replacing patio doors can range from around £1,500 to £5,000 or more, but the right choice depends on much more than the headline price.
The door style, material, glazing, size and condition of the existing opening can all affect the final cost. A professional assessment can establish what is practical for your property and help you understand exactly what your project requires.
If you are considering replacing your patio doors, MLR Maintenance can help you explore the available options and arrange a quotation. A home survey can provide a clearer idea of the doors that would suit your property, the work involved and the likely overall cost.