Roof lanterns in Downpatrick: what is involved?
Thinking about roof lanterns in Downpatrick? The short answer: hipped glass lanterns that lift the ceiling of orangeries and extensions. The longer answer depends on your roof, which is why we survey before we price.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. Roof lanterns suit orangeries, kitchen-diners and single-storey extensions.
From Downpatrick to Castlereagh, Newtownards and Lisburn, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- LED lighting in the plaster box
- Internal and external colours
- Aluminium or uPVC systems
- Solar-control or self-cleaning glass
- Opening vents with electric control
- Can include opening vents
- Classic look that suits period and modern homes
Before you order: points to check
- Larger lanterns may need a steel or timber ring beam
- Plaster-box depth affects how the lantern looks from below
Consents for roof lanterns in Downpatrick
Northern Ireland's householder permitted development allows rooflights within limits — no more than 15 cm projection on road-facing slopes and a 0.5 m margin from ridge, eaves and party walls. Listed buildings also need listed building consent from the council.
Northern Ireland's energy rules assess rooflight U-values in the vertical position — unlike England and Wales — and expect 1.6 W/m²K or Band C for replacements. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
See our building regulations guide for U-values, glazing limits and self-certification.
Roof lanterns prices in Downpatrick
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 |
What happens next
- Tell us what you have. Send the BT30 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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.
Nearby towns
More we do in Downpatrick
Common questions
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.
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.
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.
Do I need to be at home for the survey in Downpatrick?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Downpatrick?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
