Roof lanterns in Sherborne: what is involved?
Roof lanterns in Sherborne means hipped glass lanterns that lift the ceiling of orangeries and extensions. We cover the DT9 district and the rest of Dorset, with a survey before any price is fixed.
Holiday lets and second homes across the South West often want roof windows with blinds and remote opening for when the house is empty. In Sherborne, as anywhere, roof lanterns are the usual choice for orangeries, kitchen-diners and single-storey extensions.
From Sherborne to Yeovil, Dorchester and Bridport, the same survey-first process applies: measure, specify, fix the price, then fit.
Options we can specify in Sherborne
- Solar-control or self-cleaning glass
- Opening vents with electric control
- LED lighting in the plaster box
- Rectangular, square or bespoke sizes
- Internal and external colours
- Double or triple glazed with solar-control options
- Adds visual height to a single-storey room
What to check first
- Needs a strong, level kerb or upstand
- Some designs project above the roof enough to affect planning on certain houses
Consents for roof lanterns in Sherborne
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. 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 Sherborne?
Prices below are shown including and excluding VAT. In Sherborne, as elsewhere, making good inside and access equipment are the main variables.
| 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.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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 Sherborne
Common 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.
How big can a lantern be?
Aluminium systems go to around three by six metres in standard ranges; larger sizes are made to order.
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 you work alongside my builder in Sherborne?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you fit roof lanterns in Sherborne?
Yes. We survey and fit roof lanterns in Sherborne and across Dorset. Send your postcode and we will offer a survey date when we reply.
