How we approach sliding rooflights in Caernarfon
Our sliding rooflights service in Caernarfon covers box rooflights whose glass lid slides back for walk-out roof access. 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. Sliding rooflights suit walk-out access where a hatch would feel cramped.
Caernarfon is around 13 km from Bangor, Gwynedd, and we survey and fit throughout that part of Gwynedd, including the LL55 district.
Options we can specify in Caernarfon
- Anthracite, black or RAL frames
- Electric drive with safety edge
- Double or triple glazing
- Box (glazed sides) or flat sliding lid
- Integrated balustrade on some ranges
- Daylight down the stair when closed
- Lockable from inside
Things we check at survey
- Electric units need a dedicated supply and commissioning
- Weight and point loads need a structural check
Planning, building control and Caernarfon
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. 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 Caernarfon
Guide prices for sliding rooflights in Caernarfon 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 |
|---|---|---|
| Large box slider with electric drive | £11,995 – £20,395 | £9,995 – £16,995 |
| Standard box slider Typical | £8,995 – £13,195 | £7,495 – £10,995 |
| Flat sliding lid | £7,195 – £9,595 | £5,995 – £7,995 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Caernarfon address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Sliding rooflights near Caernarfon
Related work in Caernarfon
Questions about sliding rooflights in Caernarfon
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
Is a sliding rooflight better than an access hatch?
For daily use, usually yes — you walk out under open sky instead of climbing through a hinged hatch. A hatch costs less and suits occasional access.
Can children open it?
Controls can be key-switched or placed out of reach. We will set the controls up to suit the household.
Do you fit sliding rooflights in Caernarfon?
Yes. We survey and fit sliding rooflights in Caernarfon and across Gwynedd. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Caernarfon?
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.
