What do pitched roof windows involve?
Across Gwynedd, our pitched roof windows work covers centre-pivot and top-hung skylights for tiled and slate roofs. Survey first, fixed price second, fitting third.
Many Welsh homes have older single-storey rear extensions where a glass rooflight brightens a dark kitchen. Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best.
Towns in Gwynedd
Specification options in Gwynedd
- Manual, electric or solar-powered opening
- Combination and stacked windows
- Centre-pivot or top-hung
- Integral blinds and shutters
- Flashings for tiles, slates or recessed fitting
- Blinds and electric opening available
- Fits between rafters in most roofs
Planning and building rules in Wales
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. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
Guide prices
These are typical supply-and-fit ranges. For an address in Gwynedd, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large top-hung or electric window | £2,155 – £3,355 | £1,795 – £2,795 |
| Standard centre-pivot window Typical | £1,435 – £2,155 | £1,195 – £1,795 |
| Small roof window | £1,075 – £1,555 | £895 – £1,295 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Roof windows in nearby areas
Common questions
Can you replace an old roof window?
Yes — replacement into the same opening is usually quicker than a new install, often a few hours per window.
Centre-pivot or top-hung?
Centre-pivot windows are easy to clean and suit most rooms. Top-hung windows open out from the top for an unobstructed view and suit lower roof pitches near eye level.
Can roof windows be electric?
Yes — electric and solar-powered models open by remote and many include rain sensors.
Can a roof window be fitted from inside?
In most cases, yes — only the tiles around the opening are lifted, and much of the work is done from inside the loft.
Do I need to be at home for the survey in Gwynedd?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
