Dome rooflights in Barnes: what is involved?
We handle dome rooflights across Greater London, including Barnes. In short: polycarbonate and acrylic domes for flat roofs, new or replacement. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. In Barnes, as anywhere, dome rooflights are the usual choice for older flat roofs with yellowed or leaking domes.
From Barnes to Chiswick, Putney and Hammersmith, the same survey-first process applies: measure, specify, fix the price, then fit.
Options we can specify in Barnes
- Twin, triple or quad skin
- Clear, opal or tinted
- Fixed or hinged with vent
- Polycarbonate or acrylic
- Fall-through protection mesh
- Quick replacement on existing upstands
- Low cost per unit
Before you order: points to check
- Upstand condition decides whether you replace dome only or the whole unit
- Plastic domes have a lower acoustic and thermal performance than glass
Building control and safety duties in Barnes
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. Product data for building control is supplied with every quote.
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.
See our building regulations guide for U-values, glazing limits and self-certification.
Dome rooflights prices in Barnes
Prices below are shown including and excluding VAT. In Barnes, as elsewhere, making good inside and access equipment are the main variables.
| 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 |
What happens next
- Tell us what you have. Send the SW13 postcode, a rough size and a couple of photos.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- 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.
Dome rooflights near Barnes
More we do in Barnes
Common questions
Can you replace just the dome?
Yes, if the upstand is sound and the size matches. Otherwise we replace both.
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
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 I need to be at home for the survey in Barnes?
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 Barnes?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
