Dome rooflights for Llangefni: the essentials
Our dome rooflights service in Llangefni covers polycarbonate and acrylic domes for flat roofs, new or replacement. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Think of dome rooflights for older flat roofs with yellowed or leaking domes.
We work across Gwynedd, including Llangefni, and in neighbouring towns such as Bangor, Gwynedd and Caernarfon. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Llangefni project
- Polycarbonate or acrylic
- Fixed or hinged with vent
- Clear, opal or tinted
- Insulated PVC or GRP upstands
- Twin, triple or quad skin
- Light, impact-resistant domes
- Quick replacement on existing upstands
Before you order: points to check
- Fire classification matters on some roofs
- Old domes may be fragile — treat as fragile until checked
Regulations for dome rooflights in Llangefni
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 non-domestic buildings in Wales, Approved Document L sets limiting U-values for rooflights and roof ventilators; we supply the manufacturer's data for the building control submission. Fragile-roof safety and access are planned before work starts.
Our planning guide covers each nation in more detail.
Guide prices for Llangefni
Prices below are shown including and excluding VAT. In Llangefni, 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Llangefni, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Other services in Llangefni
Common questions
Do domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Can you replace just the dome?
Yes, if the upstand is sound and the size matches. Otherwise we replace both.
Can domes open?
Hinged and vented domes are available, manual or electric.
Can you work alongside my builder in Llangefni?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
How do I book a survey in Llangefni?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
