Loft conversion skylights in Mitcham: what is involved?
We handle loft conversion skylights across Greater London, including Mitcham. 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. Think of loft conversion skylights for attic bedrooms, offices and en-suites.
Mitcham sits about 2 km from Morden and 3 km from Wimbledon, and we cover the whole CR4 postcode district and the roads in between.
What you can choose
- Electric or solar opening
- Blackout and thermal blinds
- Balcony roof windows on some ranges
- Conservation styles
- Centre-pivot or top-hung
- Escape-window sizing where required
- Light planned around the room layout
What to check first
- Insulation and vapour control details matter for condensation
- Rafter spacing affects window widths
Do you need permission in Mitcham?
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
See our building regulations guide for U-values, glazing limits and self-certification.
What do loft conversion skylights cost in Mitcham?
Prices below are shown including and excluding VAT. In Mitcham, as elsewhere, making good inside and access equipment are the main variables.
| 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 |
The process, step by step
- Tell us what you have. Send the CR4 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Mitcham, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Other services in Mitcham
Loft conversion skylights in Mitcham: 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.
Can you work alongside my loft builder?
Yes — we set out and fit the windows to the builder's programme.
Can I add blinds later?
Yes — most manufacturers make blinds for each window size.
Can you work alongside my builder in Mitcham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Mitcham free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
