Flat rooflights for Oxford: the essentials
Flat rooflights in Oxford means fixed double or triple glazed rooflights for flat roofs and extensions. We cover the OX1 district and the rest of Oxfordshire, with a survey before any price is fixed.
Orangery-style extensions with lanterns are popular across the South East, and solar-control glass makes a big difference on south-facing gardens. Think of flat rooflights for kitchen extensions, side returns and flat-roofed back rooms.
We cover all of Oxford and the OX1 district, and nearby Abingdon and Didcot.
Specification options
- Frame colours: anthracite, black, white or RAL
- Rain sensor if paired with an opening unit
- Integral or fitted blinds
- Insulated kerb or timber upstand built to suit
- Double or triple glazing
- Even, top-down daylight across the whole room
- 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
- Rooflights count toward glazing in an extension, which matters for Building Regulations energy and overheating rules
Do you need permission in Oxford?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Read the planning permission guide before you commit to a design.
Flat rooflights prices in Oxford
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 |
What happens next
- Tell us what you have. Send the OX1 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Oxford, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
Related work in Oxford
Flat rooflights in Oxford: questions
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 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.
Can you fit into my existing flat roof?
Yes. We form a new opening, trim the joists, build and waterproof an upstand and make good the ceiling. A survey confirms the joist direction and roof build-up first.
Do you fit flat rooflights in Oxford?
Yes. We survey and fit flat rooflights in Oxford and across Oxfordshire. Send your postcode and we will offer a survey date when we reply.
Do I need to be at home for the survey in Oxford?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
