What do loft conversion skylights in Lewisham involve?
We handle loft conversion skylights across Greater London, including Lewisham. In short: roof windows planned for loft rooms — light, headroom and escape. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Loft conversion skylights suit loft conversions and rooms in the roof.
We work across Greater London, including Lewisham, and in neighbouring towns such as Catford and Peckham. Access, parking and how the glass reaches the roof are all checked at the survey.
What you can choose
- Balcony roof windows on some ranges
- Conservation styles
- Blackout and thermal blinds
- Combination and stacked layouts
- Centre-pivot or top-hung
- Electric opening for high windows
- Blinds and blackout for bedrooms
What to check first
- Front roof slopes can be restricted in conservation areas
- Insulation and vapour control details matter for condensation
Planning and building rules for Lewisham
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.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. 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.
Loft conversion skylights prices in Lewisham
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Electric top-hung escape window | £1,675 – £2,395 | £1,395 – £1,995 |
| Standard centre-pivot window Typical | £1,195 – £1,675 | £995 – £1,395 |
| Small window into open rafters | £955 – £1,315 | £795 – £1,095 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Lewisham address.
- 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.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Neighbouring towns
Other services in Lewisham
Common questions
How many roof windows does a loft room need?
Enough to give good light — a common rule of thumb is glazing equal to roughly a tenth to a fifth of the floor area, adjusted for orientation and use. We advise at survey.
Top-hung or centre-pivot in a loft?
Top-hung gives a clearer view and often suits escape use; centre-pivot is easier to clean and suits higher positions.
Can I add blinds later?
Yes — most manufacturers make blinds for each window size.
Is the survey in Lewisham free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Can you work alongside my builder in Lewisham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
