What do flat rooflights in Epsom involve?
We handle flat rooflights across Surrey, including Epsom. In short: fixed double or triple glazed rooflights for flat roofs and extensions. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Period cottages and conservation-area streets are common in the South East, so slim conservation rooflights are often the right choice. Think of flat rooflights for landings, bathrooms and rear extensions with flat roofs.
Epsom sits about 3 km from Ewell and 4 km from Banstead, and we cover the whole KT17 postcode district and the roads in between.
Specification options
- Rain sensor if paired with an opening unit
- Square, rectangular or long-format sizes
- Solar-control or self-cleaning outer pane
- Frame colours: anthracite, black, white or RAL
- Insulated kerb or timber upstand built to suit
- Double or triple glazed with a warm-edge spacer
- Inner pane laminated for safety overhead
Before you order: points to check
- Rooflights count toward glazing in an extension, which matters for Building Regulations energy and overheating rules
- New openings in an existing roof need a structural check on joists
Planning and building rules for Epsom
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.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. 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 do flat rooflights cost in Epsom?
Prices below are shown including and excluding VAT. In Epsom, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or triple glazed (1500 × 2500 mm and up) | £2,395 – £4,195 | £1,995 – £3,495 |
| Mid-size double glazed (1000 × 2000 mm) Typical | £1,675 – £2,395 | £1,395 – £1,995 |
| Small double glazed (up to 1000 × 1000 mm) | £1,195 – £1,795 | £995 – £1,495 |
From enquiry to finished job
- Tell us what you have. Send the KT17 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Epsom, 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.
Neighbouring towns
Other services in Epsom
Flat rooflights in Epsom: questions
How long does it take?
Fitting into a prepared upstand usually takes a day. Forming a new opening in an existing roof, including making good inside, is often two to three days.
Can a flat rooflight be walked on?
Not unless it is designed as a walk-on unit with structural laminated glass. A standard flat rooflight is for light only — if the roof is used as a terrace, choose a walk-on rooflight instead.
Can you fit into my existing flat roof?
Yes. We form a new opening, trim the joists, build and waterproof an upstand and make good the ceiling. A survey confirms the joist direction and roof build-up first.
Do I need to be at home for the survey in Epsom?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you fit flat rooflights in Epsom?
Yes. We survey and fit flat rooflights in Epsom and across Surrey. Send your postcode and we will offer a survey date when we reply.
