What do roof lanterns in Hemel Hempstead involve?
For Hemel Hempstead homes and buildings we offer roof lanterns: hipped glass lanterns that lift the ceiling of orangeries and extensions. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. In Hemel Hempstead, as anywhere, roof lanterns are the usual choice for rooms that need height as well as light.
Neighbouring towns include Berkhamsted (8 km) and St Albans (8 km). We offer a survey date when we reply to your enquiry.
Options we can specify in Hemel Hempstead
- Rectangular, square or bespoke sizes
- Solar-control or self-cleaning glass
- Internal and external colours
- LED lighting in the plaster box
- Opening vents with electric control
- Adds visual height to a single-storey room
- Slim aluminium bars, more glass
Things we check at survey
- Some designs project above the roof enough to affect planning on certain houses
- Needs a strong, level kerb or upstand
Planning, building control and Hemel Hempstead
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. 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.
Roof lanterns prices in Hemel Hempstead
Guide prices for roof lanterns in Hemel Hempstead 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 bespoke aluminium lantern | £5,995 – £10,795 | £4,995 – £8,995 |
| Mid-size aluminium lantern (2 × 3 m) Typical | £3,955 – £5,995 | £3,295 – £4,995 |
| Small lantern (1 × 2 m) | £2,995 – £3,955 | £2,495 – £3,295 |
From enquiry to finished job
- Tell us what you have. Send the HP3 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Hemel Hempstead, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Related work in Hemel Hempstead
Common questions
Roof lantern or flat rooflight?
A lantern adds height and sky from all sides; a flat rooflight is lower-profile and cleaner from outside. Our guide compares them in detail.
Do roof lanterns get hot?
They can in summer if clear glass is used on a south-facing roof. Solar-control glass and an opening vent make a big difference.
Can a lantern go on an existing extension?
Yes, if the flat roof structure can be opened up and trimmed. We check joists and the roof build-up at survey.
Will I need planning permission in Hemel Hempstead?
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.
Is the survey in Hemel Hempstead free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
