- Postcode district
- SE9
- Survey
- Free for new and replacement doors
- Typical lead time
- Typically 4–6 weeks for the door after the opening is measured; building work scheduled around approvals
- Guide price
- From £6,595 inc VAT
- Nearby
- Blackheath, Chislehurst, Woolwich
- Building rules
- England
Is a sliding door for a new opening a good fit for your home in Eltham?
The right door depends on the opening, the room and the way you use the garden. Here is how sliding doors for new openings tend to work out in practice:
For homes in Eltham that are listed or covered by an Article 4 direction, ask the council about the new opening before paying for structural calculations.
Turning an Eltham kitchen window into a door to the garden? Check where drains, gullies and air bricks sit outside, because they can affect the new threshold.
- Telling the engineer that a sliding door will sit beneath the beam lets them limit its deflection, which matters because a beam that sags can stop panels sliding freely.
- If the work affects a party wall, notice can be served under the Party Wall etc. Act 1996 (England and Wales) before it starts, avoiding disputes with neighbours later.
- A structural engineer sizes the steel beam and padstones for the actual loads above, so the opening is designed rather than guessed.
Sunlight, glass and orientation in Eltham
At the latitude of Eltham, the midday sun climbs to about 62° in late June but only about 15° in late December, when daylight lasts around 7 h 50 min against 16 h 38 min in midsummer. A south-facing sliding door for a new opening lets that low winter sun deep into the room; on a west or south elevation, solar-control glass keeps summer afternoons comfortable.
Guide prices for sliding doors for new openings in Eltham
These figures combine an aluminium sliding door with the building work to form or widen the opening, including structural calculations and VAT. Your price is fixed in a written quote once the wall in your Eltham home has been surveyed; council fees are extra.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.8 m | 2 panels | £6,995–£7,795 |
| 2.4 m | 2 panels | £7,895–£8,895 |
| 4.0 m | 3 panels | £10,295–£11,595 |
See every size on the sliding doors for new openings page or try the guide price tool.
Survey, manufacture and fitting around Eltham
A surveyor visits your Eltham home to check the wall, the structure above and the floor levels, and talks through glass and finish. Any building work is planned to the engineer's design, the door is made to the finished opening sizes — typically 4–6 weeks for the door after the opening is measured; building work scheduled around approvals — and fitting usually takes 3–5 days of building work, then 1–2 days to fit the door.
Rules for sliding doors for new openings in England
A new or wider opening in England needs Building Control approval for the structural work as well as compliance for the door itself under Approved Documents L and K. Expect structural calculations, a steel beam and, where a party wall is involved, notices under the Party Wall etc. Act 1996.
Options to consider for your sliding door for a new opening
- Temporary door or boarding. A secure, weathertight closure while the made-to-measure door is being manufactured.
- Concealed steel. Setting the beam so it sits above the ceiling line, giving a cleaner head detail inside.
- Window to door conversion. Cutting down below an existing window to form a door opening to the garden.
Questions about sliding doors for new openings in Eltham
Is the price different in Eltham?
No. Guide prices for sliding doors for new openings are the same across mainland Britain, including Eltham. The fitted price depends on size, system, glass and finish, and any structural work, all fixed in your written quote after survey.
Why does beam deflection matter for sliding doors?
Beam deflection matters because a sliding door needs a straight, level head to run properly. Every beam bends slightly under load, and if it bends too much the frame can be squeezed, making panels stiff or causing them to bind. Telling the structural engineer that a large sliding door will go underneath allows them to design a stiffer beam.
How long does it take to form a new opening?
Forming or widening an opening typically involves 3–5 days of building work, including propping, cutting out, installing the steel and padstones, and making good. The sliding door is then made to the finished opening, which typically takes 4–6 weeks for aluminium, so a secure temporary closure is fitted in between. The door itself typically goes in within one to two days.
Do I need building regulations to widen a door opening?
Yes, forming or widening an opening is structural work and needs a Building Regulations application in England, supported by structural calculations. Building Control inspects the work, typically including the steel and its bearings. In Scotland a building warrant is needed. Wales and Northern Ireland follow their own building regulations through local authority or district council building control.