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RooflightInstallers.co.uk
Stevenage · SG1 · Hertfordshire

Commercial rooflight installation in Stevenage

Our guide price for commercial rooflight installation starts from £1,095, and the real figure for your roof in Stevenage depends on a handful of things: the size and type of commercial rooflight, whether the opening exists already, the roof covering, and how easy access is. We fix the price in a written quote before work begins. Nothing gets added on the day without your say-so. For a rough idea first, photos and a couple of measurements are enough to go on, and we cover all of Hertfordshire.

Guide price from £1,095 · Supply & fit, per unit; site set-up priced separately

What the job costs in Stevenage

Per standard unit

£1,095 – £1,895including VAT at 20%

Flat glass or polycarbonate unit on an existing kerb, as part of a multi-unit job

Per large unit

£1,895 – £3,345including VAT at 20%

Larger or ventilating units, edge protection in place

Programme of works

£3,345 – £7,195including VAT at 20%

Phased replacement across a building, priced from a survey

Guide ranges for supply & fit, per unit; site set-up priced separately. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.

Fitting across Stevenage and nearby

Jobs across SG1, SG2 and SG4 are part of our normal cover for Stevenage. We are not an office on the high street. Our fitting teams come out to the property from wherever they are working that week. Neighbouring places such as Hitchin and Letchworth Garden City are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

What we do on the day

  • Access, edge protection and fragile-roof covers planned before work starts
  • New units fitted, sealed and weathered into the roof covering
  • Old units removed, with waste taken off site
  • Glass or polycarbonate — We compare glass and polycarbonate units against the roof, use and budget.
  • Fragile roofs and rooflights — We treat every rooflight and the roof around it as fragile until we have checked it.

A typical installation day

Protection comes before tools. Floors, furniture and stairs get covered, and the ceiling below the opening is sheeted to catch dust. Up top, the fitters confirm the opening is square and the upstand or flashing suits what the maker specifies. Fixing follows, then weather-sealing into the membrane, felt or tiles. Only once the roof is tight do they turn to the internal reveal. Time on site for a commercial rooflight: about a day per unit, longer on big roofs, weather permitting.

Regulations for Stevenage properties

For non-domestic roofs in England, expect building control involvement for new openings, energy limits of 2.2 W/m²K for rooflights, and fire checks where rooflights sit near a boundary or above an escape route. Smoke ventilation rooflights must be certified products, with controls commissioned by a specialist. We set out what applies to your building on the quote.

What to send for a quick quote

What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around SG1 and we will come back with a quote or a survey date.

Common questions in Stevenage

Can you fit a rooflight in winter or when it is raining?

Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.

Who is responsible for the smoke-control system?

The building's responsible person, duty holder or managing agent, depending on the nation, is responsible for keeping fire safety systems working. Our part is the rooflight and roof work; the controls, detection and commissioning are handled by a smoke-control specialist, and the quote says who does what.

Do you need scaffolding to fit a rooflight?

Not always. Single-storey roofs can often be reached safely with ladders, a tower or edge protection. Higher roofs, steep pitches and large units usually need scaffold or a mobile platform, and heavy glass may need a crane. We assess access from your photos or at the survey, and any scaffold or lifting cost is shown as its own line on the written quote.

For a free, no-obligation quote in Stevenage, use the form or call us with the details of your roof.

Rear extension at dusk with lit rooflights and a roof lantern
Ready when you are

Commercial rooflights in Stevenage

Send photos and rough sizes, or ask for a survey for install work. One fixed written price before anything starts.

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