Covered Smoke Ventilation Hatch for Flat Roofs

Efficient Smoke Extraction in Steel Design

Ventia is an electrically operated, CE-certified smoke ventilation hatch for flat roofs, constructed from PVC and sheet metal. It features a covered, durable design for long-term use in everything from residential buildings to industrial facilities and warehouses.

With a 140° opening angle and availability in any RAL colour, Ventia combines functionality, safety, and aesthetics. The hatch can also be used for comfort ventilation.

 

Features & Specifications

– Materials: PVC and sheet metal

– Insulation: U-value of 0.45 W/m²K or 0.94 W/m²K

– Opening angle: 140°

– Operation: Electric motor

– Application: Smoke ventilation and comfort ventilation

– CE marking: In accordance with EN 12101-2

– Standard upstand height: 500 mm (also available in 300 mm)

– Maximum roof pitch: 15°

– Colour: Any RAL colour

 

Available Sizes

– Standard size:
– 1000 × 1000 mm (clear opening)
– 1200 × 1200 mm (external dimension)

– Minimum size: 900 × 900 mm

– Custom sizes available—contact us for tailored solutions.

 

Technical Performance According to EN 12101-2

– SL (Snow Load): 750 Pa

 

Why Is a Smoke Ventilation Hatch Needed?

Smoke hatches are a key component of a building’s fire safety system. When activated during a fire, they create an opening to release smoke and hot gases, improving visibility in escape routes and reducing the risk of smoke inhalation. They also help protect the load-bearing structure from overheating—minimising the risk of structural collapse.

 

How Does a Smoke Hatch Work?

Smoke hatches can be activated:

– Automatically via smoke detector or fire alarm

– Manually using a push button or emergency release

– (Thermally via fusible link – not applicable in this model)

When opened, a vertical ventilation opening is created, allowing hot air and smoke to escape from the building.

 

Types of Smoke Ventilation Hatches

– Roof-mounted hatches – Common in stairwells, industrial buildings, shopping centres, and warehouses

– Combined hatches – Serve as both smoke ventilation and access hatches, optionally with comfort ventilation or daylight functionality

 

Regulations & Requirements

In Sweden, smoke hatches are governed by the Swedish Building Regulations (BBR) and the SS-EN 12101 standard. A properly installed and maintained smoke hatch is often mandatory to meet building permit and insurance requirements.