Flat rooflights in Holloway: what is involved?
We handle flat rooflights across Greater London, including Holloway. 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.
Party walls are a fact of life in London terraces, and rooflights close to a shared wall need detailing that keeps the neighbour's side dry too. Flat rooflights suit landings, bathrooms and rear extensions with flat roofs.
We work across Greater London, including Holloway, and in neighbouring towns such as Highbury and Camden Town. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Holloway
- Square, rectangular or long-format sizes
- Frame colours: anthracite, black, white or RAL
- Rain sensor if paired with an opening unit
- Insulated kerb or timber upstand built to suit
- Plastered or lined internal reveal
- Fixed units are simple, quiet and low-maintenance
- Slim sightlines from inside — mostly glass, little frame
What to check first
- The roof membrane must be dressed up the upstand before the unit goes on
- New openings in an existing roof need a structural check on joists
Do you need permission in Holloway?
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.
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. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Holloway
Guide prices for flat rooflights in Holloway are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
What happens next
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Holloway address.
- Measure and check. A surveyor visits Holloway, 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.
Flat rooflights near Holloway
More we do in Holloway
Questions about flat rooflights in Holloway
Will it make the room too hot?
A big unglazed-to-sky area can add solar gain in summer. Solar-control glass, a blind, or pairing a fixed unit with an opening one keeps it comfortable.
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.
Can you work alongside my builder in Holloway?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Holloway free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
