How we approach sliding rooflights in Ystradgynlais
Sliding rooflights in Ystradgynlais means box rooflights whose glass lid slides back for walk-out roof access. We cover the SA9 district and the rest of Powys, with a survey before any price is fixed.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
Ystradgynlais is around 89 km from Newtown, and we survey and fit throughout that part of Powys, including the SA9 district.
Options we can specify in Ystradgynlais
- Box (glazed sides) or flat sliding lid
- Anthracite, black or RAL frames
- Integrated balustrade on some ranges
- Rain sensor
- Electric drive with safety edge
- Lockable from inside
- Electric operation with safety stops
Before you order: points to check
- Needs space on the roof for the lid to slide clear
- Weight and point loads need a structural check
Do you need permission in Ystradgynlais?
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
In Wales the limiting values are 2.2 W/m²K for a rooflight and 1.4 W/m²K (or WER Band B) for a roof window in an existing house. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Ystradgynlais
Prices below are shown including and excluding VAT. In Ystradgynlais, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large box slider with electric drive | £11,995 – £20,395 | £9,995 – £16,995 |
| Standard box slider Typical | £8,995 – £13,195 | £7,495 – £10,995 |
| Flat sliding lid | £7,195 – £9,595 | £5,995 – £7,995 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Sliding rooflights near Ystradgynlais
Related work in Ystradgynlais
Common questions
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
Is a sliding rooflight better than an access hatch?
For daily use, usually yes — you walk out under open sky instead of climbing through a hinged hatch. A hatch costs less and suits occasional access.
How heavy is it?
Box sliders weigh hundreds of kilograms, so delivery may need a crane or lifting gear, and the structure must be checked.
How do I book a survey in Ystradgynlais?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Will I need planning permission in Ystradgynlais?
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites.
