What do commercial & industrial rooflights involve?
Commercial & industrial rooflights in Cornwall means rooflights for warehouses, schools, offices and retail units. Every quote follows a survey of the roof and the room below.
Many South West towns mix Georgian and Victorian terraces with modern estates, so the right product differs street by street. Holiday lets and second homes across the South West often want roof windows with blinds and remote opening for when the house is empty.
Towns in Cornwall
Options we can specify
- Modular glass rooflights
- Polycarbonate domes
- GRP or polycarbonate in-plane rooflight sheets
- Smoke and natural ventilation vents
- Continuous barrel-vault rooflights
- Fall-protection planning included
- Barrel vaults, ridge lights and modular glass
Planning and building rules in England
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 buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fragile-roof safety and access are planned before work starts.
Commercial & industrial rooflights prices in Cornwall
Prices below are shown including and excluding VAT. In Cornwall, as elsewhere, making good inside and access equipment are the main variables.
| 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 you replace old warehouse rooflight sheets?
Yes. We match the roof profile, replace discoloured or damaged sheets and plan safe access while the building stays in use.
Can you quote from drawings?
Yes, with a site survey to confirm.
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 across Cornwall?
Yes. We survey and fit commercial & industrial rooflights across Cornwall, including Redruth, Falmouth, St Austell.
