What do flat rooflights in Brecon involve?
Our flat rooflights service in Brecon covers fixed double or triple glazed rooflights for flat roofs and extensions. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Flat rooflights suit landings, bathrooms and rear extensions with flat roofs.
Brecon sits about 22 km from Merthyr Tydfil and 23 km from Ebbw Vale, and we cover the whole LD3 postcode district and the roads in between.
Specification options
- Rain sensor if paired with an opening unit
- Insulated kerb or timber upstand built to suit
- Integral or fitted blinds
- Square, rectangular or long-format sizes
- Solar-control or self-cleaning outer pane
- Slim sightlines from inside — mostly glass, little frame
- Pairs with an opening unit where you also need ventilation
What to check first
- Needs a properly formed upstand — usually at least 150 mm above the finished roof surface (check the manufacturer's figure)
- Rooflights count toward glazing in an extension, which matters for Building Regulations energy and overheating rules
Planning, building control and Brecon
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. Listed buildings need listed building consent from the council, and flats have no householder permitted development rights.
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.
Flat rooflights prices in Brecon
Guide prices for flat rooflights in Brecon are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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
- Tell us what you have. Send the LD3 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Brecon, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Related work in Brecon
Questions about flat rooflights in Brecon
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.
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.
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.
Do I need to be at home for the survey in Brecon?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
How do I book a survey in Brecon?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
