- Postcode district
- NW7
- Survey
- Free for new and replacement doors
- Typical lead time
- Typically 2–4 weeks from survey sign-off
- Guide price
- From £1,695 inc VAT
- Nearby
- Edgware, Finchley, Hendon
- Building rules
- England
uPVC sliding patio doors in Mill Hill: what to know
Before you settle on a door type, it helps to know what uPVC sliding patio doors do well and what to check before you order.
Planning a door wider than about 3.6 m for your Mill Hill home? That is beyond the uPVC range, so aluminium or a multi-track system would be the next step.
The rules for a replacement door in Mill Hill are checked at survey, and your written quote says which approval route applies to your home.
- Shoot-bolt or hook locking on the sliding panel, plus anti-lift devices, help stop the panel being lifted or levered out of the frame from outside.
- uPVC frames never need painting or staining; an occasional wipe with warm soapy water keeps white or foiled finishes looking clean.
- Compressible gaskets and brush pile seals along the interlock reduce the draughts and rattles that an older patio door with worn seals often suffers from.
Sunlight, glass and orientation in Mill Hill
Daylight in Mill Hill runs from about 7 h 48 min in December to 16 h 40 min in June, with the noon sun at roughly 15° and 62° respectively. Use that to choose your glass: standard low-E double glazing for north and east elevations, and consider solar-control or triple glazing for sunny south and west walls.
Typical costs for uPVC sliding patio doors around Mill Hill
Use these guide prices to budget. They include VAT, fitting and taking away an old door of a similar size. Taller doors, triple glazing and dual colour add to the figure — the online tool shows how much.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.5 m | 2 panels | £1,695–£2,095 |
| 2.4 m | 2 panels | £2,195–£2,695 |
| 3.0 m | 2 panels | £2,495–£3,095 |
See every size on the uPVC sliding patio doors page or try the guide price tool.
Survey, manufacture and fitting around Mill Hill
Surveys in the NW7 district are booked at a time that suits you. After you approve the quote, manufacture is typically 2–4 weeks from survey sign-off; on fitting day the old door comes out, the new frame is set level and sealed, and the panels are adjusted so they glide properly. Fitting usually takes 1 day for a straight swap in an existing opening.
Rules for uPVC sliding patio doors in England
English Building Regulations treat a new or replacement external door in an existing home as a controlled fitting: it needs a U-value of 1.4 W/m²K or better (or Doorset Energy Rating band C) if more than 60% of it is glazed (Approved Document L), and safety glass in a critical location (Approved Document K). Compliance is arranged through a competent person scheme installer or a Building Control notification, so you get a certificate for your records.
Finishes and extras for uPVC sliding patio doors
- Handles. Lever or pull handles in white, black, chrome or gold-effect finishes, with a key lock on the outside.
- Threshold. A standard threshold for a straight swap, or a lower threshold where the floor build-up allows.
- Glass. Toughened double glazing as standard, with laminated, obscure or solar-control units available.
Questions about uPVC sliding patio doors in Mill Hill
Do you fit uPVC sliding patio doors in Mill Hill?
Yes. We survey and fit uPVC sliding patio doors in Mill Hill and across Greater London, including nearby Edgware and Finchley. Start with a guide price online or call us, and we will arrange a free survey for a new or replacement door.
Do I need permission to replace a patio door with a uPVC slider?
In England, replacing a patio door on a house is usually permitted development if the new door looks similar, though flats, listed buildings and Article 4 areas may need consent. The work must be done by a competent person scheme installer or notified to Building Control, and the glass must be safety glazing. Wales, Scotland and Northern Ireland have their own planning and building rules.
How much do uPVC sliding patio doors cost?
uPVC sliding patio doors start from a guide price of £1,695 for a 1.5 m two-panel door, fitted, inc VAT, at standard 2.1 m height. A 2.4 m door is a guide £2,195–£2,695, and a 3.6 m three-panel door is around £2,895. Coloured foils, glass upgrades and a low threshold move the figure up, and the final price is fixed in a written quote after survey.
What sizes do uPVC sliding doors come in?
uPVC sliding doors are made to measure, so they come in any size within the system limits rather than set sizes. Our uPVC range covers overall widths from about 1.5 m to 3.6 m at standard 2.1 m height. Two panels cover most openings up to about 3 m, and beyond that a third panel is added. For larger openings, aluminium carries bigger panels.