What do commercial & industrial rooflights involve?
Commercial & industrial rooflights in Lancashire means rooflights for warehouses, schools, offices and retail units. Every quote follows a survey of the roof and the room below.
Rear kitchen extensions on North West semis often have small domes from decades ago that leak or have yellowed. Converted mills and warehouses in the North West often have large rooflights or glass roofs that need specialist replacement.
Towns in Lancashire
Specification options in Lancashire
- GRP or polycarbonate in-plane rooflight sheets
- Smoke and natural ventilation vents
- Modular glass rooflights
- Polycarbonate domes
- Mesh or grilles under fragile areas
- Planned around working sites
- Smoke-vent options where needed
Planning and building rules in England
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. 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. Fire classification of rooflight materials near boundaries is checked at specification.
What do commercial & industrial rooflights cost in Lancashire?
Prices below are shown including and excluding VAT. In Lancashire, 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
Do you work out of hours?
For occupied buildings we can plan phased or out-of-hours working where access allows.
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 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.
Do I need to be at home for the survey in Lancashire?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
