How we approach sliding rooflights in Caerphilly
Sliding rooflights in Caerphilly means box rooflights whose glass lid slides back for walk-out roof access. We cover the CF83 district and the rest of Gwent, with a survey before any price is fixed.
Many Welsh homes have older single-storey rear extensions where a glass rooflight brightens a dark kitchen. In Caerphilly, as anywhere, sliding rooflights are the usual choice for walk-out access where a hatch would feel cramped.
Jobs in Caerphilly are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
Options we can specify in Caerphilly
- Double or triple glazing
- Integrated balustrade on some ranges
- Rain sensor
- Anthracite, black or RAL frames
- Box (glazed sides) or flat sliding lid
- Electric operation with safety stops
- Glazed box sides keep the headroom open
Before you order: points to check
- Weight and point loads need a structural check
- Needs space on the roof for the lid to slide clear
Do you need permission in Caerphilly?
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. 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.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
See our building regulations guide for U-values, glazing limits and self-certification.
What do sliding rooflights cost in Caerphilly?
These are typical supply-and-fit ranges. For an address in Caerphilly, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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 |
From enquiry to finished job
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Caerphilly, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
More we do in Caerphilly
Questions about sliding rooflights in Caerphilly
How heavy is it?
Box sliders weigh hundreds of kilograms, so delivery may need a crane or lifting gear, and the structure must be checked.
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
What if it is raining?
Fitted with a rain sensor, an electric unit closes automatically. Most also have a manual override for power cuts.
Do I need to be at home for the survey in Caerphilly?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Will I need planning permission in Caerphilly?
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.
