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RooflightInstallers.co.uk
St Austell · PL25 · Cornwall

Smoke vent rooflight installation in St Austell

Our guide price for smoke vent rooflight installation starts from £3,595, and the real figure for your roof in St Austell depends on a handful of things: the size and type of smoke vent 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 Cornwall.

Guide price from £3,595 · Supply & fit; controls and commissioning by a smoke-control specialist

St Austell guide prices

Vent swap

£3,595 – £6,595including VAT at 20%

Like-for-like certified vent and actuator, connected to the existing controls and commissioned by a smoke-control specialist

Vent with new controls

£5,745 – £9,595including VAT at 20%

Vent plus new control panel and detection, commissioned by a smoke-control specialist

Multiple vents

£9,595 – £17,995including VAT at 20%

Several stairwells or larger systems, priced from a survey

Guide ranges for supply & fit; controls and commissioning by a smoke-control specialist. 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.

Areas around St Austell we cover

Looking at a property near St Austell but not quite in it? We work across PL25, PL26 and PL24 and outwards to Bodmin, Truro and Newquay. Give us the full postcode when you get in touch, because access, parking and the route for a large unit all depend on the exact street. Those details shape the quote for any job around St Austell.

What the job includes

  • New vent fitted, sealed and weathered into the roof
  • Old vent removed with the stairwell kept protected below
  • Controls, detection and wiring handled by the smoke-control specialist
  • Free area at the stair head — We check the free area the vent must provide before choosing a replacement.
  • Controls and backup power — We confirm the controls, detection and backup power are being dealt with by a specialist.

How a fitting day runs

Arrive and agree the plan. Sheet the floor and furniture. Set up the ladder, tower or scaffold. Check the opening, the upstand or flashing, and the unit against the paperwork. Fix and pack a smoke vent rooflight level. Seal it into the roof. Line the reveal or fit the ceiling trim. Clean the glass, clear the waste, and talk you through it. That is the shape of most fitting days, and for this type of job it usually takes one to two days per vent.

Planning and building rules in England

In England, smoke vents for common stairs must be certified to BS EN 12101-2, provide the free area the fire strategy requires (Approved Document B calls for at least 1 m² at the top of a common stair), and have backup power. Smoke vents have their own energy limit, commonly 3.5 W/m²K. Controls and commissioning are handled by a smoke-control specialist, and building control is involved where the system changes.

Help us quote accurately

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 PL25 and we will come back with a quote or a survey date.

Common questions in St Austell

What upstand height and roof pitch does smoke vent rooflight fitting need?

It depends on the product. Manufacturers usually specify a minimum upstand height above the finished roof surface, and a minimum pitch on the glass so rain runs off. We follow the maker's figures for your unit rather than a rule of thumb. If your existing kerb or roof falls short, we explain the options, such as raising the upstand or choosing a unit with built-in pitch.

Can you remove and dispose of the old rooflight?

Yes. Taking out the old unit is part of any replacement job, and it leaves with the rest of the waste unless you ask to keep it. Old domes, glass and frames go through proper waste routes. If removal turns up a rotten kerb or damaged decking, we show you what we have found and agree the repair with you before going any further.

Does commercial rooflight work need building control?

Usually. New openings, structural changes and smoke vents go through building control, and on buildings covered by fire safety law that means a full plans application rather than a building notice. We are not registered with a competent person scheme, so replacements we fit are notified to building control. We confirm the route and show any fee on the quote.

For a free, no-obligation quote in St Austell, 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

Smoke vents (AOV) in St Austell

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

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