What do roof lanterns in Ystradgynlais involve?
Roof lanterns in Ystradgynlais means hipped glass lanterns that lift the ceiling of orangeries and extensions. 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. Typical uses for roof lanterns include orangeries, kitchen-diners and single-storey extensions.
Neighbouring towns include Pontardawe (8 km) and Neath (12 km). We offer a survey date when we reply to your enquiry.
Options we can specify in Ystradgynlais
- Opening vents with electric control
- Rectangular, square or bespoke sizes
- Aluminium or uPVC systems
- LED lighting in the plaster box
- Solar-control or self-cleaning glass
- Can include opening vents
- Adds visual height to a single-storey room
Things we check at survey
- Plaster-box depth affects how the lantern looks from below
- Some designs project above the roof enough to affect planning on certain houses
Planning, building control and 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. 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.
Read the planning permission guide before you commit to a design.
Guide prices for Ystradgynlais
These are typical supply-and-fit ranges. For an address in Ystradgynlais, 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 or bespoke aluminium lantern | £5,995 – £10,795 | £4,995 – £8,995 |
| Mid-size aluminium lantern (2 × 3 m) Typical | £3,955 – £5,995 | £3,295 – £4,995 |
| Small lantern (1 × 2 m) | £2,995 – £3,955 | £2,495 – £3,295 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Ystradgynlais address.
- Measure and check. A surveyor visits Ystradgynlais, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
More we do in Ystradgynlais
Questions about roof lanterns in Ystradgynlais
How big can a lantern be?
Aluminium systems go to around three by six metres in standard ranges; larger sizes are made to order.
Do they leak?
Modern lanterns are sealed systems. Leaks usually trace back to the kerb or roof membrane detail, which we form and check ourselves.
Can a lantern go on an existing extension?
Yes, if the flat roof structure can be opened up and trimmed. We check joists and the roof build-up at survey.
Is the survey in Ystradgynlais free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do you fit roof lanterns in Ystradgynlais?
Yes. We survey and fit roof lanterns in Ystradgynlais and across Powys. Send your postcode and we will offer a survey date when we reply.
