Sliding rooflights in Welling: what is involved?
Sliding rooflights in Welling means box rooflights whose glass lid slides back for walk-out roof access. We cover the DA16 district and the rest of Greater London, with a survey before any price is fixed.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
From Welling to Bexleyheath, Bexley and Sidcup, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Anthracite, black or RAL frames
- Double or triple glazing
- Rain sensor
- Integrated balustrade on some ranges
- Box (glazed sides) or flat sliding lid
- Full-width, walk-out access to a roof terrace
- Lockable from inside
Before you order: points to check
- Electric units need a dedicated supply and commissioning
- The stair opening and headroom must meet Building Regulations
Consents for sliding rooflights in Welling
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
See our building regulations guide for U-values, glazing limits and self-certification.
Sliding rooflights prices in Welling
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Welling, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
More we do in Welling
Common questions
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.
Does it need planning permission?
A box unit that projects above the roof plane can need planning permission, especially on the front of a house or in a conservation area. We check before you order.
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
Do I need to be at home for the survey in Welling?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you fit sliding rooflights in Welling?
Yes. We survey and fit sliding rooflights in Welling and across Greater London. Send your postcode and we will offer a survey date when we reply.
