How we approach flat rooflights in Rhondda
Flat rooflights in Rhondda means fixed double or triple glazed rooflights for flat roofs and extensions. We cover the CF42 district and the rest of Mid Glamorgan, with a survey before any price is fixed.
Chapels, barns and farm buildings converted across Wales often need bespoke or conservation-style glass. Flat rooflights suit landings, bathrooms and rear extensions with flat roofs.
Rhondda is the main town we list in Mid Glamorgan; we also cover nearby Tonypandy and Aberdare.
Specification options
- Plastered or lined internal reveal
- Frame colours: anthracite, black, white or RAL
- Double or triple glazing
- Insulated kerb or timber upstand built to suit
- Square, rectangular or long-format sizes
- Double or triple glazed with a warm-edge spacer
- Fixed units are simple, quiet and low-maintenance
Before you order: points to check
- New openings in an existing roof need a structural check on joists
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
Planning and building rules for Rhondda
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.
Approved Document L in Wales (2022 edition) sets 2.2 W/m²K for rooflights, measured horizontally, and 1.4 W/m²K or Band B for roof windows in existing homes. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
Read the planning permission guide before you commit to a design.
Flat rooflights prices in Rhondda
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or triple glazed (1500 × 2500 mm and up) | £2,395 – £4,195 | £1,995 – £3,495 |
| Mid-size double glazed (1000 × 2000 mm) Typical | £1,675 – £2,395 | £1,395 – £1,995 |
| Small double glazed (up to 1000 × 1000 mm) | £1,195 – £1,795 | £995 – £1,495 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Rhondda address.
- Measure and check. A surveyor visits Rhondda, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Flat rooflights near Rhondda
Other services in Rhondda
Common questions
Do flat rooflights leak?
A well-fitted flat rooflight should not leak. Leaks almost always come from the upstand or membrane detailing, not the glass unit, which is why the upstand height and the way the roof covering is dressed up and under the frame matter more than the brand.
Will it make the room too hot?
A big unglazed-to-sky area can add solar gain in summer. Solar-control glass, a blind, or pairing a fixed unit with an opening one keeps it comfortable.
Double or triple glazing?
Double glazing suits most domestic jobs. Triple glazing improves thermal performance and cuts noise from rain, which is worth it over bedrooms or where the energy calculation is tight.
Can you work alongside my builder in Rhondda?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
How do I book a survey in Rhondda?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
