Roof lanterns in Bodmin: what is involved?
For Bodmin 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.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. Typical uses for roof lanterns include orangeries, kitchen-diners and single-storey extensions.
Jobs in Bodmin 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.
Specification options
- Aluminium or uPVC systems
- Opening vents with electric control
- Solar-control or self-cleaning glass
- LED lighting in the plaster box
- Internal and external colours
- Light from every angle across the day
- Adds visual height to a single-storey room
Before you order: points to check
- Plaster-box depth affects how the lantern looks from below
- Needs a strong, level kerb or upstand
Planning and building rules for Bodmin
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.
Our planning guide covers each nation in more detail.
What do roof lanterns cost in Bodmin?
These are typical supply-and-fit ranges. For an address in Bodmin, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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
- Tell us what you have. Send the PL31 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Bodmin, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Roof lanterns near Bodmin
More we do in Bodmin
Questions about roof lanterns in Bodmin
How big can a lantern be?
Aluminium systems go to around three by six metres in standard ranges; larger sizes are made to order.
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 they leak?
Modern lanterns are sealed systems. Leaks usually trace back to the kerb or roof membrane detail, which we form and check ourselves.
Will I need planning permission in Bodmin?
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 I need to be at home for the survey in Bodmin?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
