Conservation rooflights for Blackheath: the essentials
Thinking about conservation rooflights in Blackheath? The short answer: slim, low-profile steel-look rooflights for period and listed roofs. The longer answer depends on your roof, which is why we survey before we price.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Typical uses for conservation rooflights include period, listed and conservation-area roofs.
From Blackheath to Greenwich, Catford and Eltham, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Central vertical glazing bar
- Manual or electric opening
- Blinds
- Flashings for slate or plain tile
- Steel or aluminium frames
- Optional central glazing bar
- Traditional slim profile, sits low in the roof
Things we check at survey
- Listed building consent is needed for listed buildings
- Projection above the roof line is limited — usually as flush as possible
Consents for conservation rooflights in Blackheath
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. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Read the planning permission guide before you commit to a design.
Guide prices for Blackheath
Guide prices for conservation rooflights in Blackheath 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 electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
From enquiry to finished job
- Tell us what you have. Send the SE3 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Blackheath, measures and checks structure and access.
- 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.
Conservation rooflights near Blackheath
Other services in Blackheath
Questions about conservation rooflights in Blackheath
Can they open?
Yes, most are top-hung or side-hung for ventilation and cleaning, with manual or electric operation.
Can you copy an original rooflight?
Some makers produce bespoke sizes to match an existing opening. We can survey and quote.
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
Will I need planning permission in Blackheath?
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.
Do you fit conservation rooflights in Blackheath?
Yes. We survey and fit conservation rooflights in Blackheath and across Greater London. Send your postcode and we will offer a survey date when we reply.
