Dome rooflights in Carlisle: what is involved?
We handle dome rooflights across Cumbria, including Carlisle. 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.
Rear kitchen extensions on North West semis often have small domes from decades ago that leak or have yellowed. Think of dome rooflights for older flat roofs with yellowed or leaking domes.
We cover all of Carlisle and the CA1 district, and nearby Penrith and Keswick.
Specification options
- Fixed or hinged with vent
- Polycarbonate or acrylic
- Clear, opal or tinted
- Insulated PVC or GRP upstands
- Fall-through protection mesh
- Light, impact-resistant domes
- Smoke-vent versions available
Before you order: points to check
- Fire classification matters on some roofs
- Old domes may be fragile — treat as fragile until checked
Building control and safety duties in Carlisle
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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Carlisle
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 |
From enquiry to finished job
- 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.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Related work in Carlisle
Common questions
Are domes safe to walk on?
No. Treat any rooflight as fragile unless it is specifically certified non-fragile, and never stand on it.
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
Can domes open?
Hinged and vented domes are available, manual or electric.
Can you work alongside my builder in Carlisle?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you fit dome rooflights in Carlisle?
Yes. We survey and fit dome rooflights in Carlisle and across Cumbria. Send your postcode and we will offer a survey date when we reply.
