- Postcode district
- CF10
- 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
- Penarth, Dinas Powys, Caerphilly
- Building rules
- Wales
Are replacement sliding doors right for your Cardiff home?
A few practical points decide whether replacement sliding doors suit a particular room and opening:
Considering a wider door for your Cardiff home while you are replacing it? Weigh up the extra cost of structural work against the gain in glass before deciding.
If your Cardiff home still has its original sliding patio door, look at the glass beads: if they are on the outside, a replacement will close off that weakness.
- 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.
- New rollers and a precision track make a heavy door glide with a light push, where an old door may need both hands and a firm shove to open.
- Removal and disposal of your old patio door is included in our guide prices, so there is no separate skip or tip run to organise.
How much sun will a door in Cardiff get?
The midday sun over Cardiff ranges from about 15° at the winter solstice to about 62° at midsummer. Low-angle winter light reaches further into a room through a tall door, which is one reason taller panels are worth considering; on south or west walls, pair them with solar-control glass.
How much do replacement sliding doors cost in Cardiff?
The table shows guide prices for common sizes, supplied and fitted, including VAT. Your exact price is fixed in a written quote once the opening in your Cardiff home has been measured.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.5 m | 2 panels | £3,295–£4,095 |
| 4.0 m | 3 panels | £6,095–£7,395 |
| 4.8 m | 4 panels | £6,995–£8,495 |
See every size on the replacement sliding doors page or try the guide price tool.
Timescales for replacement sliding doors in Cardiff
Surveys in the CF10 district are booked at a time that suits you. After you approve the quote, manufacture is typically 4–6 weeks for aluminium and 2–4 weeks for uPVC after 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 two-panel swap; 1–2 days for larger doors.
Do you need approval in Cardiff?
Wales sets its own Building Regulations guidance, including Approved Document L (Wales) for energy. A replacement sliding door must meet those requirements and use safety glass, and we arrange compliance through a registered installer or the local Building Control service.
Which options matter for replacement sliding doors?
- Upgraded glass. Triple, laminated, solar-control or obscure glass to suit the elevation.
- Slimline upgrade. Narrow interlocks for the maximum glass area the existing opening allows.
- Lower threshold. A reduced-height sill where floor and outside levels allow, with suitable drainage.
Questions about replacement sliding doors in Cardiff
Do I need building approval for replacement sliding doors in Cardiff?
In Wales a replacement door must meet the Building Regulations as applied in Wales, arranged through a registered installer or Building Control. We confirm the right route for your property at survey, so the paperwork is in place before fitting.
Can I get a bigger door in the same opening?
You can usually get more glass in the same opening, because modern frames are slimmer, but the overall door size stays roughly the same as the old one. Making the door wider or taller means widening the opening, which is structural work with a steel beam, calculations and a Building Regulations application. Our new openings page covers that.
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.
What if there is no proper lintel above my old door?
Occasionally an old door frame turns out to be carrying some load because the support above the opening is inadequate or missing. We check the head of the opening at survey and again when the old frame comes out. If extra support is needed, we explain why, what it involves and what it costs before any further work goes ahead.