What does skylight replacement in Swanley involve?
We handle skylight replacement across Kent, including Swanley. 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.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. In Swanley, as anywhere, skylight replacement is the usual choice for yellowed domes, misted glass and leaking roof windows.
Swanley sits about 5 km from Bexley and 6 km from Orpington, and we cover the whole BR8 postcode district and the roads in between.
Options we can specify in Swanley
- Roof window replacement in pitched roofs
- Like-for-like size replacement
- Fixed to electric opening
- Dome to flat glass upgrade
- Misted glass unit replacement only
- Cures most chronic leaks
- Clearer view and more light
Before you order: points to check
- Upstand and roof condition decide the scope
- Enlarging the opening changes the structure and may need approval
Planning and building rules for Swanley
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. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
See our building regulations guide for U-values, glazing limits and self-certification.
Skylight replacement prices in Swanley
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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
- Tell us what you have. Send the BR8 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Swanley, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Skylight replacement near Swanley
More we do in Swanley
Skylight replacement in Swanley: questions
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
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.
Do you offer skylight replacement in Swanley?
Yes. We carry out skylight replacement in Swanley and across Kent. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Swanley?
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.
