How we approach roof lanterns in Biggleswade
We handle roof lanterns across Bedfordshire, including Biggleswade. In short: hipped glass lanterns that lift the ceiling of orangeries and extensions. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. Think of roof lanterns for orangeries, kitchen-diners and single-storey extensions.
From Biggleswade to Sandy, Letchworth Garden City and St Neots, the same survey-first process applies: measure, specify, fix the price, then fit.
Options we can specify in Biggleswade
- Solar-control or self-cleaning glass
- Opening vents with electric control
- Internal and external colours
- LED lighting in the plaster box
- Rectangular, square or bespoke sizes
- Adds visual height to a single-storey room
- 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
Planning, building control and Biggleswade
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. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
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.
Read the planning permission guide before you commit to a design.
What do roof lanterns cost in Biggleswade?
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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Roof lanterns near Biggleswade
Other services in Biggleswade
Roof lanterns in Biggleswade: 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.
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.
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 Biggleswade?
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 Biggleswade?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
