What are commercial & industrial rooflights?
Commercial & industrial rooflights in County Londonderry means rooflights for warehouses, schools, offices and retail units. Every quote follows a survey of the roof and the room below.
Wind and rain off the Atlantic make upstand and flashing details important on Northern Irish roofs. Bungalows are widespread in Northern Ireland, and sun tunnels or roof windows are an easy way to brighten internal hallways.
Towns in County Londonderry
Options we can specify
- Smoke and natural ventilation vents
- Continuous barrel-vault rooflights
- Mesh or grilles under fragile areas
- GRP or polycarbonate in-plane rooflight sheets
- Polycarbonate domes
- Daylight that reduces daytime lighting
- Replacement of discoloured or fragile sheets
Planning and building rules in Northern Ireland
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. We confirm the route for your building before ordering.
For non-domestic buildings in Northern Ireland, Technical Booklet F2 covers energy performance; we supply the manufacturer's data for building control. Fire classification of rooflight materials near boundaries is checked at specification.
What do commercial & industrial rooflights cost in County Londonderry?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Barrel-vault or modular glass rooflight | £3,595 – £8,395 | £2,995 – £6,995 |
| Commercial flat-glass rooflight Typical | £1,795 – £3,595 | £1,495 – £2,995 |
| Dome or in-plane sheet replacement | £1,075 – £1,795 | £895 – £1,495 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Commercial rooflights in nearby areas
Common questions
Can rooflights double as smoke vents?
Some units are certified smoke ventilators. See our smoke-vent rooflights page.
Do you supply O&M information?
Yes — product data, manufacturer warranties and maintenance notes are handed over at completion.
Are old rooflights a safety risk?
Older plastic rooflight sheets can become brittle. Anyone working on the roof must treat them as fragile unless proven otherwise.
Do you work out of hours?
For occupied buildings we can plan phased or out-of-hours working where access allows.
Do I need to be at home for the survey in County Londonderry?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
