How we approach skylight replacement in Thamesmead
We handle skylight replacement across Greater London, including Thamesmead. 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. Skylight replacement suits older extensions due a modern rooflight.
Thamesmead sits about 4 km from Barking and 5 km from Welling, and we cover the whole SE28 postcode district and the roads in between.
Choices for your Thamesmead project
- Fixed to electric opening
- Upstand rebuild and insulation
- Roof window replacement in pitched roofs
- Misted glass unit replacement only
- Dome to flat glass upgrade
- Option to add opening and rain sensor
- Cures most chronic leaks
Before you order: points to check
- A replacement is a chance to meet current thermal standards
- Old glass and domes are disposed of responsibly
Consents for skylight replacement in Thamesmead
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. 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.
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. 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.
What does skylight replacement cost in Thamesmead?
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 |
How the job runs
- Tell us what you have. Send the SE28 postcode, a rough size and a couple of photos.
- 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.
Nearby towns
Related work in Thamesmead
Skylight replacement in Thamesmead: questions
How long does a replacement take?
Usually a day for a standard rooflight on a sound upstand.
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 you offer skylight replacement in Thamesmead?
Yes. We carry out skylight replacement in Thamesmead and across Greater London. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Thamesmead?
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.
