How we approach commercial & industrial rooflights in Derry/Londonderry
Thinking about commercial & industrial rooflights in Derry/Londonderry? The short answer: rooflights for warehouses, schools, offices and retail units. The longer answer depends on your roof, which is why we survey before we price.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. Typical uses for commercial & industrial rooflights include industrial roofs with tired or fragile rooflight sheets.
We cover all of Derry/Londonderry and the BT48 district, and nearby Strabane and Limavady.
Choices for your Derry/Londonderry project
- GRP or polycarbonate in-plane rooflight sheets
- Modular glass rooflights
- Mesh or grilles under fragile areas
- Polycarbonate domes
- Smoke and natural ventilation vents
- Replacement of discoloured or fragile sheets
- Planned around working sites
What to check first
- Non-fragility classification should be confirmed for new products
- Fragile rooflights are a known fall hazard — work at height must be planned
Building control and safety duties in Derry/Londonderry
For non-domestic buildings, planning depends on the building and its location; building regulations cover thermal performance and the fire classification of rooflights near boundaries. Product data for building control is supplied with every quote.
For non-domestic buildings in Northern Ireland, Technical Booklet F2 covers energy performance; we supply the manufacturer's data for building control. Fragile-roof safety and access are planned before work starts.
Read the planning permission guide before you commit to a design.
Commercial & industrial rooflights prices in Derry/Londonderry
Guide prices for commercial & industrial rooflights in Derry/Londonderry are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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
- Send the details. Postcode, rough size and a photo of the roof and room.
- 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.
Nearby towns
Other services in Derry/Londonderry
Common questions
Do you work out of hours?
For occupied buildings we can plan phased or out-of-hours working where access allows.
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.
Can rooflights double as smoke vents?
Some units are certified smoke ventilators. See our smoke-vent rooflights page.
Do you fit commercial & industrial rooflights in Derry/Londonderry?
Yes. We survey and fit commercial & industrial rooflights in Derry/Londonderry and across County Londonderry. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Derry/Londonderry?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
