Dome rooflights in London: what is involved?
For London homes and buildings we offer dome rooflights: polycarbonate and acrylic domes for flat roofs, new or replacement. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Victorian and Edwardian terraces with narrow side returns are typical of much of London, and a glass roof or long flat rooflight is the usual way to keep the back rooms bright once the return is built over. In London, as anywhere, dome rooflights are the usual choice for older flat roofs with yellowed or leaking domes.
We cover all of London and the EC1A district, and nearby Pimlico and Islington.
Specification options
- Twin, triple or quad skin
- Fall-through protection mesh
- Clear, opal or tinted
- Insulated PVC or GRP upstands
- Fixed or hinged with vent
- Fixed, hinged or vented options
- Low cost per unit
What to check first
- Old domes may be fragile — treat as fragile until checked
- Fire classification matters on some roofs
Regulations for dome rooflights in London
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. We confirm the route for your building before ordering.
For buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fragile-roof safety and access are planned before work starts.
Read the planning permission guide before you commit to a design.
What do dome rooflights cost in London?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Dome and new insulated upstand | £955 – £1,675 | £795 – £1,395 |
| Hinged or vented dome Typical | £715 – £1,195 | £595 – £995 |
| Replacement fixed dome | £475 – £835 | £395 – £695 |
The process, step by step
- Send the details. Postcode, rough size and a photo of the roof and room.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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.
Nearby towns
Related work in London
Common questions
Can you replace just the dome?
Yes, if the upstand is sound and the size matches. Otherwise we replace both.
Are domes safe to walk on?
No. Treat any rooflight as fragile unless it is specifically certified non-fragile, and never stand on it.
Should I replace a dome or switch to glass?
A dome is cheaper and quick; glass gives a clear view and better performance. On a tight budget, or a commercial roof with many units, domes remain sensible.
Do you fit dome rooflights in London?
Yes. We survey and fit dome rooflights in London and across Greater London. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in London?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
