Skylight replacement for Pwllheli: the essentials
We handle skylight replacement across Gwynedd, including Pwllheli. In short: replacing tired domes and failed glass with a modern rooflight. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Typical uses for skylight replacement include yellowed domes, misted glass and leaking roof windows.
From Pwllheli to Porthmadog, Caernarfon and Dolgellau, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Dome to flat glass upgrade
- Roof window replacement in pitched roofs
- Fixed to electric opening
- Upstand rebuild and insulation
- Misted glass unit replacement only
- Cures most chronic leaks
- Better thermal performance
What to check first
- Old glass and domes are disposed of responsibly
- A replacement is a chance to meet current thermal standards
Planning, building control and Pwllheli
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
In Wales the limiting values are 2.2 W/m²K for a rooflight and 1.4 W/m²K (or WER Band B) for a roof window in an existing house. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
Our planning guide covers each nation in more detail.
Guide prices for Pwllheli
Guide prices for skylight replacement in Pwllheli 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 |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
The process, step by step
- Tell us what you have. Send the LL53 postcode, a rough size and a couple of photos.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- 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.
Nearby towns
More we do in Pwllheli
Questions about skylight replacement in Pwllheli
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
Will I need planning permission in Pwllheli?
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites.
How do I book a survey in Pwllheli?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
