New Sliding & Patio Door Installation

This is the question every homeowner asks — and the honest answer is that it depends on a range of factors. We do not give fabricated exact prices because no two doors, no two openings, and no two properties are identical. What we do provide is a clear breakdown of what drives the cost.

Door size and configuration: A standard two-panel uPVC patio door costs less than a large three-panel aluminium slider, which costs less than a bespoke four-panel bifold. More glass, more frame material, and more complex mechanisms increase the door cost.

Frame material: uPVC is the most affordable and most common choice. Aluminium is mid-range to premium — stronger, slimmer frames, more contemporary. Timber is at the upper end — beautiful and traditional but more expensive. Composite doors (timber inside, aluminium outside) are a premium option.

Glazing specification: Standard double glazing is the baseline. Upgrading to low-E glass, argon-filled cavities, acoustic glass, or triple glazing increases the cost. Toughened safety glass is included as standard.

Structural work: If the opening needs widening, a new lintel is required, or the existing frame needs substantial making-good, the builder's work adds to the total cost.

Removal and disposal: Taking out the old door, disposing of it responsibly, and clearing the site are included in the quote — make sure any quote you compare includes this, as some installers quote a door-only price and add removal separately.

For a deeper look at cost factors, visit our pricing page. Every installation starts with a free survey and an itemised quote.

uPVC is the most affordable option, provides excellent thermal insulation, requires virtually no maintenance beyond occasional cleaning, and is available in a wide range of colours and wood-effect finishes. Modern uPVC doors are a significant step up from the 1990s white plastic stereotype. The main limitation is frame thickness — uPVC frames are thicker than aluminium, meaning less glass area for the same opening size.

Aluminium is stronger, allowing for slimmer frames and larger glass areas. An aluminium door lets in more light and has a more contemporary, premium appearance. Aluminium is highly durable — it will not warp, rot, or rust (though it can corrode in coastal environments if not properly treated). Modern aluminium doors incorporate a thermal break that dramatically improves thermal performance. The trade-off is cost: aluminium doors are more expensive than uPVC.

Timber offers a traditional, high-end appearance that suits period properties. Modern engineered timber doors are more dimensionally stable than solid timber. Timber doors require periodic maintenance — painting or oiling — to protect the wood from weathering.

If you have decided it is time to replace your sliding or patio door — or you want an honest assessment of whether repair or replacement makes more sense — our matching service connects you with a vetted local installer covering your area. Tell us your postcode, describe your current door and what you are looking to replace it with, and we will put you in touch.

Our network covers 14 major UK cities: Manchester, Birmingham, Leeds, Liverpool, Bristol, Sheffield, Newcastle, Nottingham, Leicester, Southampton, Brighton, Glasgow, Edinburgh, and Cardiff — plus their surrounding areas. For London, visit sliding-door-repair-london.uk.