What are dome rooflights?
Across Northamptonshire, our dome rooflights work covers polycarbonate and acrylic domes for flat roofs, new or replacement. Survey first, fixed price second, fitting third.
Industrial and commercial units around Midlands towns often still have their original rooflight sheets, which are due for replacement. Midlands housing is a mix of Victorian terraces, inter-war semis and newer estates, and rear kitchen extensions with flat rooflights are a common upgrade.
Towns in Northamptonshire
Options we can specify
- Fixed or hinged with vent
- Twin, triple or quad skin
- Insulated PVC or GRP upstands
- Polycarbonate or acrylic
- Fall-through protection mesh
- Smoke-vent versions available
- Quick replacement on existing upstands
Planning and building rules in England
For non-domestic buildings, planning depends on the building and its location; building regulations cover thermal performance and the fire classification of rooflights near boundaries. 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.
What do dome rooflights cost in Northamptonshire?
Guide prices for dome rooflights in Northamptonshire 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 |
|---|---|---|
| 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 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Dome rooflights in nearby areas
Common questions
Can domes open?
Hinged and vented domes are available, manual or electric.
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 domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Do I need to be at home for the survey in Northamptonshire?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
