Smoke Shafts: Supply, Install, Maintain, Repair & Service
We supply, install, maintain, repair and service smoke shafts across the UK, covering Ventlux and all other makes.

Supply from £361.35Price is for the product supplied only: Ventlux SVM Micro 4A controller (comparable), as listed on the iComply Supplies shop (iComply is not VAT registered, so no VAT is added). Shop prices can change.This is the lowest-priced related item in our shop; the main unit itself is priced after survey.Installation, maintenance, repair and servicing: POA (price on application, after a free survey and written quote).

What are smoke shafts?
A smoke shaft is a vertical duct from each floor's corridor to the roof, with a vent or damper on each floor and an AOV at the top. Natural shafts rely on buoyancy; mechanical shafts add a fan.
Where they are used
Used in residential corridors of taller blocks of flats.
Pros
- Protects common corridors
- Opens only on the fire floor
Cons
- Takes floor space
- Complex controls
Standards and regulations
Smoke control components are covered by the BS EN 12101 series (for example EN 12101-2 for natural smoke and heat exhaust ventilators, EN 12101-3 for powered fans, EN 12101-6 for pressure differential systems, EN 12101-8 for smoke dampers, EN 12101-9 for control panels and EN 12101-10 for power supplies). Design follows Approved Document B (England), BS 9991 (residential) or BS 9999 (other buildings), with Scottish, Welsh and Northern Irish equivalents. Under the Regulatory Reform (Fire Safety) Order 2005 the responsible person must keep systems maintained.
Installation considerations
We check shaft size, damper or vent on each floor, top vent and controls. Price shown is a comparable controller.
Every installation starts with a free survey. We confirm the specification, give you a written quote, install and commission the system, and hand over with test records and instructions.

Maintenance of smoke shafts
Planned maintenance keeps smoke shafts safe and reliable and gives you records for insurers and inspections. We service Ventlux and all other makes: we check fixings, wear, power and battery backup, controls and safety devices, adjust and lubricate where needed, test operation end to end and leave a written report with any recommended actions.
Repairs
If your smoke shafts has stopped working, is noisy, is opening or closing on its own or is showing a fault, we fault-find on site and repair it, often on the first visit using parts from our shop. We repair systems we did not install and work on all common makes.
Servicing
Servicing intervals depend on use and risk; most sites have a service at least once a year, busy or safety-critical systems more often. We can set up a service contract with reminders so it is never missed. Installation, maintenance, repair and service prices are POA after a free survey and quote.
FAQs
Natural or mechanical shaft?
Depends on the fire strategy and building height.
How is the fire floor chosen?
The detector on that floor opens its vent.
How often tested?
Weekly function test and an annual service are usual.
Do you service and repair smoke shafts you did not install?
Yes. We supply, install, maintain, repair and service smoke shafts of all common makes, whoever fitted them.
How much does it cost to install or service smoke shafts?
Installation, maintenance, repair and servicing are POA (price on application). We give a free chat, free survey and a written quote first.
Related types
Where we work
Popular areas for smoke shafts 24
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