How we approach roof lanterns in Chesham
Our roof lanterns service in Chesham covers hipped glass lanterns that lift the ceiling of orangeries and extensions. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Period cottages and conservation-area streets are common in the South East, so slim conservation rooflights are often the right choice. In Chesham, as anywhere, roof lanterns are the usual choice for rooms that need height as well as light.
Chesham sits about 4 km from Amersham and 7 km from Berkhamsted, and we cover the whole HP5 postcode district and the roads in between.
Specification options
- Rectangular, square or bespoke sizes
- Solar-control or self-cleaning glass
- Opening vents with electric control
- Internal and external colours
- LED lighting in the plaster box
- Slim aluminium bars, more glass
- Classic look that suits period and modern homes
Things we check at survey
- Larger lanterns may need a steel or timber ring beam
- Plaster-box depth affects how the lantern looks from below
Planning and building rules for Chesham
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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. 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.
Our planning guide covers each nation in more detail.
Roof lanterns prices in Chesham
These are typical supply-and-fit ranges. For an address in Chesham, 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 HP5 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Roof lanterns near Chesham
Related work in Chesham
Roof lanterns in Chesham: 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.
Aluminium or uPVC?
Aluminium gives slimmer bars and a longer life; uPVC costs less. We fit both.
Do I need to be at home for the survey in Chesham?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Will I need planning permission in Chesham?
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.
