Towns we cover in Gwynedd
Choose your town for local details. We list 9 towns in Gwynedd; if yours is not shown, we still cover it — enter your postcode in the guide price tool.
Choose a door type for Gwynedd
Prices are the same across Gwynedd; choose a door type for sizes, options and local details.
Main towns in Gwynedd
| Town | Postcode district | Nearest listed town | Daylight on 21 Dec |
|---|---|---|---|
| Bangor (Gwynedd) | LL57 | Beaumaris (5 km north-east) | 7 h 31 min |
| Bala | LL23 | Dolgellau (27 km south-west) | 7 h 35 min |
| Beaumaris | LL58 | Bangor (Gwynedd) (5 km south-west) | 7 h 31 min |
| Caernarfon | LL55 | Llangefni (13 km north) | 7 h 32 min |
| Dolgellau | LL40 | Machynlleth (17 km south) | 7 h 36 min |
| Holyhead | LL65 | Llangefni (22 km east) | 7 h 30 min |
| Llangefni | LL77 | Bangor (Gwynedd) (12 km east) | 7 h 31 min |
| Porthmadog | LL49 | Pwllheli (19 km west) | 7 h 34 min |
| Pwllheli | LL53 | Porthmadog (19 km east) | 7 h 35 min |
Postcode districts covered in Gwynedd
Our town pages for Gwynedd cover these postcode districts: LL23, LL40, LL49, LL53, LL55, LL57, LL58, LL65, LL77. Other postcodes in the area are covered too — enter yours in the guide price tool.
Daylight across Gwynedd
The midday sun over Gwynedd ranges from about 13° at the winter solstice to about 60° at midsummer. Low-angle winter light reaches further into a room through a tall door, which is one reason taller panels are worth considering; on south or west walls, pair them with solar-control glass.
Approvals in Wales
In Wales, replacement doors are covered by the Building Regulations as applied in Wales, including the Welsh Part L energy requirements and safety glazing rules. Compliance is arranged through a competent person scheme installer or your council's Building Control, and the certificate is kept with your property records.
In Wales, structural work to form or widen an opening needs Building Regulations approval and structural calculations, and the new door must meet the Welsh energy and safety glazing requirements. The Party Wall etc. Act 1996 may apply where steelwork bears on a party wall.
Sliding doors in Gwynedd: questions
Do you fit sliding doors across Gwynedd?
Yes. We survey and fit sliding doors in Bangor (Gwynedd), Bala, Beaumaris, Caernarfon and the rest of Gwynedd. Start with a guide price online or call us to book a free survey for new or replacement doors.
Are prices higher in Gwynedd?
No. Guide prices are the same across mainland Britain: a 2.4 m aluminium sliding door is a guide £4,295–£5,295, fitted, including VAT, and your exact price is fixed in a written quote after survey.
What approvals do sliding doors need in Wales?
In Wales a replacement door must meet the Building Regulations as applied in Wales, arranged through a registered installer or Building Control. We confirm the right route for your property at survey.