Fire safety

Comfort Smoke Ventilation

Fire safety is so important and it’s vital to make sure you have the correct smoke ventilation for your property.  Smoke is the primary cause of death in a fire more often than flames with around 50 -80% of deaths. A big cloud of smoke can travel faster through a building than any fire, completely obscuring escape routes as it does so. There is not just damage caused by the poisons in the smoke itself, but by burns to the respiratory system with irritation and swelling compounding the problems.

Fire Safety
Smoke Ventilators enable greater control of the building during a fire, allowing for clearer escape routes and buildings.

AOV Smoke Vents

Smoke Control systems ventilate smoke from a fire which reduces its spread, clears escape routes and makes it easier for fire fighters to get closer to the blaze and put it out quicker.

Surespan  AOV Smoke Vents minimize fatalities by detecting smoke and opening up to a 140˚ angle, which stays open to ensure that heat is diverted away from the opening and cannot be blown back into the building by wind. The cover opens to its fully open position within 60 seconds of activation. Our 140˚ smoke vent is operated by a 24v DC actuator and are all supplied CE marked.

SRHP Smoke Vent
Comfort Smoke Ventilation


EN12101-2 is the European standard for smoke and heat control systems. According to the regulations, from July 2013, all natural smoke and heat ventilators must be tested and CE marked in order to confirm compliance with harmonized European standards.

The main purpose of the compliance tests and CE marking is to ensure that all AOV’s are reliable and fit for purpose. The CE Mark also allows free movement of products within the European Market. Our AOV’s are sold with these key features:

  • CE Marked to EN12101-2
  • Thermally Broken Frame
  • Custom made to any size up to 9.8′ x 6′
  • Available in glazed, solid top and/or with concealed actuators and polycarbonate skylight
  • 12″ Upstand
  • Can be wired direct into the Building Management System

Our AOV’s Are Tested To


1000 Comfort Ventilation + 10,000 opening/closing

Snow Load

SL 500

Wind Load

WL 1500

Temperature Class

T (-15)

Fire Resistance

B 300

Aerodynamic tests (measured values):

Without deflectors: Cv from 0.42 to 0.56
With deflectors: Cv from 0.66 to 0.73


Smoke ventilator for roof access and smoke ventilation.

Surespan SRHP/AOV 140° thermally broken aluminium smoke ventilator and roof hatch designed to EN12101-2. The AOV also offers push button comfort ventilation. The lid and upstand features a 50mm thermally broken section and fully insulated with 50mm CFC and HCFC free Polyisocyanurate insulation. Alternative non-combustible Mineral Wool insulation can be specified at no extra cost.

Manufacturer: Surespan Ltd. Leamore Close, Walsall, WS2 7NL.
Web: Tel: +44 (0)1922 711185. Product reference: SRHP/AOV

[Solid Aluminium Lid]
[Polycarboante Dome Lid]

[36″ x 36″]
[40″ x 40″]
[43″ x 43″]
[48″ x 48″]
[50″ x 50″]
[-] – Bespoke size between 36″ x 36″ and 50″ x 50″

[Aluminium]. – Mill finish as standard.

[300 mm thermally broken and insulated]. – Standard.

Colour/ Finish:
[Mill Finish]
[Polyester powder coating].

Insulation Options:
[2″ polyisocyanurate insulation (0.43 W/m²K)].
[2″ Non-Combustible mineral wool insulation (0.63 W/m²K)].

[24v Control Center]
[Fireman’s switch]
[Key switch]
[Push button]
[Smoke detector]

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