How we approach sliding rooflights in Cwmbran
We handle sliding rooflights across Gwent, including Cwmbran. In short: box rooflights whose glass lid slides back for walk-out roof access. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Many Welsh homes have older single-storey rear extensions where a glass rooflight brightens a dark kitchen. In Cwmbran, as anywhere, sliding rooflights are the usual choice for staircases that rise to a roof terrace.
Cwmbran is around 8 km from Newport, Gwent, and we survey and fit throughout that part of Gwent, including the NP44 district.
What you can choose
- Box (glazed sides) or flat sliding lid
- Double or triple glazing
- Rain sensor
- Anthracite, black or RAL frames
- Electric drive with safety edge
- Replaces a dormer or stair enclosure on some roofs
- Daylight down the stair when closed
Things we check at survey
- Electric units need a dedicated supply and commissioning
- Needs space on the roof for the lid to slide clear
Planning, building control and Cwmbran
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. 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. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
See our building regulations guide for U-values, glazing limits and self-certification.
Sliding rooflights prices in Cwmbran
Prices below are shown including and excluding VAT. In Cwmbran, 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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Cwmbran address.
- Measure and check. A surveyor visits Cwmbran, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Neighbouring towns
More we do in Cwmbran
Questions about sliding rooflights in Cwmbran
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.
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
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.
Do I need to be at home for the survey in Cwmbran?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Is the survey in Cwmbran free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
