Frameless structural rooflights in Lisburn: what is involved?
We handle frameless structural rooflights across County Antrim, including Lisburn. In short: minimal glass rooflights with no visible frame from inside. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Wind and rain off the Atlantic make upstand and flashing details important on Northern Irish roofs. In Lisburn, as anywhere, frameless structural rooflights are the usual choice for architect-led extensions and long slots of light over islands or along party walls.
Neighbouring towns include Belfast (11 km) and Castlereagh (11 km). We offer a survey date when we reply to your enquiry.
Choices for your Lisburn project
- Low-iron extra-clear glass
- Butt-jointed runs for long openings
- Shadow-gap or plastered reveal
- Triple glazing
- Solar-control coatings
- Solar-control and low-iron glass options
- Clean modern detail for architect-led schemes
What to check first
- The internal finish (plaster, shadow gap) is agreed before order
- Large panes need lifting gear and access planning
Planning, building control and Lisburn
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. Extensions follow a 25% glazing allowance in Technical Booklet F1.
Read the planning permission guide before you commit to a design.
What do frameless structural rooflights cost in Lisburn?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Long-format or jointed run | £6,595 – £11,995 | £5,495 – £9,995 |
| Large single pane Typical | £4,795 – £7,195 | £3,995 – £5,995 |
| Standard frameless unit | £3,595 – £4,795 | £2,995 – £3,995 |
What happens next
- Tell us what you have. Send the BT27 postcode, a rough size and a couple of photos.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Frameless structural rooflights near Lisburn
Related work in Lisburn
Common questions
Can a frameless rooflight be walked on?
Only if it is specified as a walk-on unit. Most frameless rooflights are for light only.
Does it cost more?
Usually, because the glass is larger and heavier and the finish needs tighter tolerances. The price table shows typical ranges.
Can it open?
Some frameless designs include a sliding or hinged opening element, but most are fixed. Pair with an opening unit if you need ventilation.
Do you fit frameless structural rooflights in Lisburn?
Yes. We survey and fit frameless structural rooflights in Lisburn and across County Antrim. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Lisburn?
Most rooflights on houses in Northern Ireland are permitted development under Class B, but not in a conservation area or on a listed building's curtilage.
