Model: Fomatec

Applications: Fomatec is used for smoke extraction in buildings with high demands on safety and aesthetics. The unit can also function as a roof access hatch, providing safe access for service, inspection, and maintenance. Smoke vents are commonly used in residential buildings, offices, commercial properties, industrial facilities, and warehouses.

Material: Polycarbonate (PC) dome and insulated timber frame (70 mm)

Insulation: Standard U-value: 0.77–1.16 W/m²K

Dimensions: Custom sizes available

• Standard size: 1000 × 1000 mm
• Minimum size: 1000 × 1000 mm
• Maximum size: 1200 × 2400 mm

Upstand height:
300 or 500 mm

Operation: Operated via control panel and BVT button

Roof pitch: Suitable for roof slopes up to 15°

Opening angle: 160°

Control system:
24/48 V control unit (depending on size)
SA Power Single motor TA

Components: Control panel, actuator, BVT button, smoke detector, comfort switch, and push button

Opening force: 300 kg

Overload protection: LIP 6

Protection class: IP54

Corrosion class: C2

Technical performance (EN 12101-2):

• WL 1500 – wind load class (1500 Pa)
• SL 800 – snow load class (800 Pa)
• Re 10,000/1,000 – reliability (cycles)
• B 300 – temperature class (operation at 300 °C)
• Cv – aerodynamic free area coefficient: 0.67–0.70

Alternative upstand height (300 or 500 mm)

Additional insulation for improved energy efficiency

Custom color or material to meet aesthetic requirements

Chain actuator

Ladder

Safety railing

Flat polycarbonate (PC) dome

For more options and project-specific solutions, please contact us

Complies with EN 12101-2 requirements for smoke vents and smoke extraction

CE marked

Complies with Swedish building regulations (BBR)

Operation

• The unit is part of the building’s smoke ventilation system and is activated automatically via the control system
• It can also be used for comfort ventilation within the building
• Always ensure that the opening area is clear of obstructions before activation

Maintenance

• Functional testing should be carried out at least once per year or in accordance with applicable regulations
• Regularly check that the unit opens and closes correctly during testing
• Inspect actuators, hinges, and mechanical components, and keep the unit clean and free from dirt and corrosion

What is a smoke vent?
A smoke vent is an opening roof unit designed to release smoke and hot gases in the event of a fire. By quickly removing smoke, visibility inside the building improves, making evacuation and rescue operations easier.

What is the difference between a smoke vent and a smoke exhaust vent?
The terms are often used interchangeably. The technical term in standards is NSHEV (Natural Smoke and Heat Exhaust Ventilator), but “smoke vent” is more commonly used in everyday language.

What does CE marking mean for a smoke vent?
CE marking means the product complies with EU construction product regulations and that its performance has been verified through testing and documentation. For smoke vents, this means they are tested according to relevant standards and have declared performance values.

What is EN 12101-2?
EN 12101-2 is the European standard for natural smoke and heat exhaust ventilators, such as roof smoke vents. It defines requirements and test methods for:

• Aerodynamic free area (ventilation capacity)
• Wind and snow load resistance
• Reliability (number of operating cycles)
• Performance at high temperatures

A smoke vent tested according to EN 12101-2 can be used in the design of smoke ventilation systems.

What is aerodynamic free area (Aa)?
Aerodynamic free area is the effective ventilation area provided when the smoke vent is open. It is determined through testing according to EN 12101-2 and is used by fire engineers when designing smoke ventilation systems.

What is geometric free area?
Geometric free area is the physical opening size of the vent (width × length). While sometimes used in national regulations, aerodynamic free area (Aa) is typically used in design according to European standards.

Can a smoke vent also be used for ventilation?
Yes. Many modern smoke vents can be used for both smoke extraction and daily comfort ventilation, improving indoor air quality.

Do smoke vents require maintenance?
Yes. Smoke vents are part of a building’s fire safety system and must be inspected regularly. Typically, at least one annual function test is recommended to ensure proper operation and system reliability.

How many smoke vents are needed in a building?
The number depends on the building’s size, use, and fire safety requirements. The system is usually designed by a fire consultant based on the required aerodynamic free area (Aa) according to EN 12101-2.

Where are smoke vents installed?
Smoke vents are typically installed on roofs or at the highest point of a building, where smoke and hot gases naturally accumulate. Placement is determined during the design phase.

Can a smoke vent also function as a roof access hatch?
Yes, some smoke vents are designed to also provide safe roof access for maintenance and inspection. This requires proper design and installation.

How is a smoke vent opened in case of fire?
Smoke vents are usually opened automatically via a fire alarm system or control unit. They can also be activated manually using a break-glass unit or control panel.