- Postcode district
- CF45
- Survey
- Free for new and replacement doors
- Typical lead time
- Typically 8–10 weeks from survey sign-off
- Guide price
- From £5,095 inc VAT
- Nearby
- Aberdare, Merthyr Tydfil, Tonypandy
- Building rules
- Wales
Why choose timber and alu-clad sliding doors in Mountain Ash?
Before you settle on a door type, it helps to know what timber and alu-clad sliding doors do well and what to check before you order.
Whether you live in Mountain Ash or elsewhere in Mid Glamorgan, an exposed coastal or hilltop elevation makes a strong case for alu-clad rather than all-timber outside.
Because timber and alu-clad sliding doors typically take 8–10 weeks to make, a Mountain Ash building programme runs more smoothly when the survey happens as soon as the opening size is fixed.
- Stains, paints and lacquers are sprayed in the factory under controlled conditions, giving a more even and longer-lasting coat than a finish brushed on site.
- Engineered timber is laminated from several layers with the grain opposed, so frames resist the twisting and warping that solid timber can suffer as the seasons change.
- The inside face can be finished to match existing oak floors, stair parts or window boards, so the new door feels part of the room rather than an addition.
Light and sun in Mountain Ash
The midday sun over Mountain Ash 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.
Guide prices for timber and alu-clad sliding doors in Mountain Ash
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 Mountain Ash home has been measured.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.5 m | 2 panels | £5,095–£6,195 |
| 1.8 m | 2 panels | £5,595–£6,795 |
| 3.0 m | 2 panels | £7,495–£9,095 |
See every size on the timber and alu-clad sliding doors page or try the guide price tool.
What happens when you order timber and alu-clad sliding doors in Mountain Ash?
Here is the usual sequence in Mountain Ash: guide price, free survey, written quote, then manufacture (typically 8–10 weeks from survey sign-off). Fitting typically takes 1 day for a two-panel swap; 1–2 days for larger doors. Nearby, we also survey in Aberdare, Merthyr Tydfil and Tonypandy.
Rules for timber and alu-clad sliding doors in Wales
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.
Specification choices for timber and alu-clad sliding doors in Mountain Ash
- Alu-cladding. A powder-coated aluminium outer shell in a standard or RAL colour, with timber left on show inside.
- Glass. Double or triple glazed safety glass, with slim glazing bars available for a period look.
- Timber species. Oak or another hardwood for a visible grain, or engineered softwood where a painted finish is planned.
Questions about timber and alu-clad sliding doors in Mountain Ash
How soon can you survey in Mountain Ash?
Surveys in the CF45 district are booked at a time that suits you, and we offer survey dates when we reply to your enquiry. After you approve the written quote, manufacture is typically 8–10 weeks from survey sign-off.
Can I fit timber sliding doors to a listed building or in a conservation area?
Timber sliding doors can suit listed buildings and conservation areas, but listed buildings and properties under an Article 4 direction may need consent before any door is changed, so check with your local planning authority first. In England, replacing doors on an ordinary house with similar-looking ones is usually permitted development. Wales, Scotland and Northern Ireland have their own planning rules.
How big can a timber sliding door be?
A timber sliding door in our range is typically about 1.5 m to 4.8 m wide overall, in two to four panels, at standard 2.1 m height or taller on request. Individual panel sizes depend on the system and glass weight; larger panels usually move to lift and slide hardware so they stay easy to open. Sizes are confirmed after survey.
Are timber sliding doors secure?
Timber sliding doors are secure when built with multi-point locking, laminated glass and robust sections, because engineered timber gives the locking keeps a solid, dense fixing. Timber systems are available tested to PAS 24, the UK enhanced security test standard for doorsets. Internally beaded glass and a key-locking handle add further resistance to forced entry.

