Roof lanterns for Welwyn Garden City: the essentials
Roof lanterns in Welwyn Garden City means hipped glass lanterns that lift the ceiling of orangeries and extensions. We cover the AL8 district and the rest of Hertfordshire, with a survey before any price is fixed.
Larger gardens in much of the South East mean deeper rear extensions, and deeper rooms need light from above rather than only from the doors. In Welwyn Garden City, as anywhere, roof lanterns are the usual choice for rooms that need height as well as light.
Jobs in Welwyn Garden City are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
Choices for your Welwyn Garden City project
- Rectangular, square or bespoke sizes
- Solar-control or self-cleaning glass
- Opening vents with electric control
- Aluminium or uPVC systems
- Internal and external colours
- Can include opening vents
- Slim aluminium bars, more glass
Things we check at survey
- Larger lanterns may need a steel or timber ring beam
- Needs a strong, level kerb or upstand
Consents for roof lanterns in Welwyn Garden City
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. 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. 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 Welwyn Garden City
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Welwyn Garden City address.
- Measure and check. A surveyor visits Welwyn Garden City, 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.
Neighbouring towns
Other services in Welwyn Garden City
Roof lanterns in Welwyn Garden City: questions
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.
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
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.
How do I book a survey in Welwyn Garden City?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Welwyn Garden City?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
