Skylight replacement for Streatham: the essentials
We handle skylight replacement across Greater London, including Streatham. In short: replacing tired domes and failed glass with a modern rooflight. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Think of skylight replacement for yellowed domes, misted glass and leaking roof windows.
Streatham sits about 2 km from Balham and 4 km from Clapham, and we cover the whole SW16 postcode district and the roads in between.
What you can choose
- Dome to flat glass upgrade
- Fixed to electric opening
- Roof window replacement in pitched roofs
- Like-for-like size replacement
- Upstand rebuild and insulation
- Better thermal performance
- Option to add opening and rain sensor
What to check first
- Enlarging the opening changes the structure and may need approval
- Old glass and domes are disposed of responsibly
Planning, building control and Streatham
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
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.
Guide prices for Streatham
Prices below are shown including and excluding VAT. In Streatham, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
The process, step by step
- Send the details. Postcode, rough size and a photo of the roof and room.
- 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.
Skylight replacement near Streatham
Related work in Streatham
Skylight replacement in Streatham: questions
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Can you replace only the misted glass?
Sometimes, if the frame is sound and the maker supplies replacement units. Often a complete new rooflight costs little more and performs better.
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
Is the survey in Streatham 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 Streatham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
