- Postcode district
- RH10
- Survey
- Free for new and replacement doors
- Typical lead time
- Typically 4–6 weeks for aluminium and 2–4 weeks for uPVC after survey sign-off
- Guide price
- From £3,295 inc VAT
- Nearby
- Horley, Horsham, East Grinstead
- Building rules
- England
Why choose replacement sliding doors in Crawley?
A few practical points decide whether replacement sliding doors suit a particular room and opening:
Selling a house in Crawley in the next few years? Keep the competent person scheme certificate or Building Control notice for the new door with your property paperwork.
If the existing opening in your Crawley home is sound and a sensible size, simply replacing the door gives the biggest improvement for the least disruption.
- Because the opening stays the same size, a straight replacement avoids structural work, steel beams and a Building Regulations structural application.
- Most two-panel replacements are completed in a single day, so the house is secure again by the evening without the room being out of use for long.
- Multipoint locks, anti-lift devices and internally beaded glass close the security gaps that older patio doors commonly have, such as panels that can be lifted out.
Light and sun in Crawley
Sun angles matter for big glazed doors. Around Crawley, midday sun reaches about 62° in summer and drops to about 15° in winter. That low winter sun is free heat through south-facing glass; high summer sun is easier to shade with a roof overhang, and solar-control glass helps where there is none.
Sliding door replacement prices in Crawley
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) |
|---|---|---|
| 1.8 m | 2 panels | £3,695–£4,495 |
| 3.0 m | 2 panels | £4,995–£6,095 |
| 6.0 m | 4 panels | £8,295–£10,095 |
See every size on the replacement sliding doors page or try the guide price tool.
What happens when you order replacement sliding doors in Crawley?
Here is the usual sequence in Crawley: guide price, free survey, written quote, then manufacture (typically 4–6 weeks for aluminium and 2–4 weeks for uPVC after survey sign-off). Fitting typically takes 1 day for a straight two-panel swap; 1–2 days for larger doors. Nearby, we also survey in Horley, Horsham and East Grinstead.
Rules for replacement sliding 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.
Specification choices for replacement sliding doors in Crawley
- Upgraded glass. Triple, laminated, solar-control or obscure glass to suit the elevation.
- uPVC replacement. A cost-conscious choice for a straightforward swap, available in white and foiled colours.
- Slimline upgrade. Narrow interlocks for the maximum glass area the existing opening allows.
Questions about replacement sliding doors in Crawley
Do I need building approval for replacement sliding doors in Crawley?
In England a replacement door is a controlled fitting, so compliance is arranged through a competent person scheme installer or Building Control; new openings need a Building Regulations application. We confirm the right route for your property at survey, so the paperwork is in place before fitting.
What happens to my old patio door?
We remove your old patio door and take it away for disposal as part of the job, and that is included in our guide prices, so there is nothing for you to arrange. If you would rather keep the old door, for example for a shed or greenhouse project, tell us before the fitting day and we will leave it safely on site.
Do I need planning permission to replace a sliding door?
Replacing doors on a house is usually permitted development, so no planning application is needed, as long as the new doors are similar in appearance to the existing ones. Flats, listed buildings and properties covered by an Article 4 direction may need consent. Our planning guide explains more.
Do I need building regulations approval to replace a patio door?
In England a replacement door is a controlled fitting, so it must meet the Building Regulations for energy and safety glazing. You do not apply in advance; instead the work is self-certified by a competent person scheme installer or notified to Building Control, which we arrange. In Scotland like-for-like replacement in a house usually needs no building warrant but must still meet the building standards.