How we approach skylight replacement in Brentwood
For Brentwood homes and buildings we offer skylight replacement: replacing tired domes and failed glass with a modern rooflight. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Flat, open landscape in much of the East means roofs take the wind, so upstand and seal details matter more than the brand of glass. Typical uses for skylight replacement include older extensions due a modern rooflight.
Neighbouring towns include Billericay (8 km) and Hornchurch (9 km). We offer a survey date when we reply to your enquiry.
Choices for your Brentwood project
- Roof window replacement in pitched roofs
- Dome to flat glass upgrade
- Misted glass unit replacement only
- Like-for-like size replacement
- Upstand rebuild and insulation
- Cures most chronic leaks
- Often reuses the existing opening
Things we check at survey
- Old glass and domes are disposed of responsibly
- Enlarging the opening changes the structure and may need approval
Do you need permission in Brentwood?
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.
Guide prices for Brentwood
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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Brentwood address.
- Measure and check. A surveyor visits Brentwood, measures and checks structure and access.
- 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.
Skylight replacement near Brentwood
Other services in Brentwood
Common questions
How long does a replacement take?
Usually a day for a standard rooflight on a sound upstand.
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.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
Do I need to be at home for the survey in Brentwood?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Will I need planning permission in Brentwood?
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.
