System Types

Natural · Mechanical

The type of ventilation system used will depend on various circumstances. The advantages and applications of Natural and Mechanical ventilations systems are as follows:

This type of system uses the natural air flow & pressures of wind to deliver fresh air to the building to help remove smoke from an area without the use of fans/assistants & works just like a Chimney by drawing smoke out of the building.

Natural smoke and heat exhaust systems (NSHEV) will often prove more cost effective and appear less intrusive to the building’s design integrity.

This is why we recommend early consultation in a project to provide the widest choice of options to conform to Building Regulations and controls

The basic objectives of smoke control systems are:-

  • To keep the escape routes free from smoke.
  • To assist fire fighting operations by creating a smoke free layer.
  • To reduce the thermal damage to the structural components during a fire.
  • To reduce smoke and heat damage caused by the fire and associated hot gases.

This is normally achieved by:

  • Providing an openable vent at the top of stairwell in small installations
  • Powering a high level window
  • Providing a “Smoke Shaft” along a central core protecting numerous floors (normally corridors) by means of opening either a powered fire door or Louver & venting out via the roof top exhaust

Common Uses:

  • Residential blocks of flats
  • Offices & commercial
  • Retail & shopping
  • Hotels
  • Schools & Universities
  • Sheltered Housing
  • Public Buildings

Services we offer:

  • Design
  • Installation
  • Commission
  • Supply of Equipment
  • Maintenance

Areas we cover

  • Essex
  • Kent
  • Hertfordshire
  • Suffolk
  • London (East, North & South East)

Mechanical ventilation systems are usually deployed in buildings and structures where a natural smoke ventilation solution cannot be deployed or where they are impracticable.

The advantage of a Mechanical System is the guaranteed nature of its performance – it will extract a known volume of air per minute consistently, making your fire strategy more straightforward.

The disadvantages however are:

  • Cost
  • Aesthetics
  • Noise

Mechanical smoke shafts are usually deployed where an Approved Document B area of 1.5m2 cannot be achieved naturally or sometimes in higher building where up-venting and smoke buoyancy are not sufficient to allow smoke and heat exhaust ventilation to be successfully achieved.

These systems normally require a Secondary Power Supply to enable compliance (such as dedicated fire supply, generator or UPS) & specialist wiring/configuration & would normally require a complex design known as “CFD” (Computational Fluid Dynamics) Modelling & require specialist fire rated extraction fans rated at 400 Degrees and an extremely complex fire strategy.

Smoke shafts are placed adjacent to common areas such as stairs, lobbies and interior corridors to vent smoke and heat.

This provides improved safety for the evacuation of building occupants and better smoke-free access for fire fighters.

Natural smoke and heat exhaust systems (NSHEV) will often prove more cost effective and appear less intrusive to the building’s design integrity.

This is why we recommend early consultation in a project to provide the widest choice of options to conform to Building Regulations and controls.

Common Uses:

  • High Rise blocks of flats
  • Offices & commercial
  • Retail & shopping
  • Hotels
  • Sheltered Housing
  • Public Buildings

Services we offer:

  • Design
  • Installation
  • Commission
  • Supply of Equipment
  • Maintenance

Areas we cover:

  • Essex
  • Kent
  • Hertfordshire
  • Suffolk
  • London (East, North & South East)
For Architects we can:
  • Offer support & advice on regulatory matters.
  • Tailor make products and solutions which fit and compliment the aesthetic needs of the building.
  • Bespoke manufacturing solutions to match the most exacting of building requirements.
For Consulting Designers & Engineers we can:
  • Offer Technical support on system designs & Installations.
  • Offer a comprehensive range of products extensively tested to the relevant standards.
  • Offer support from initial design through to commissioning and handover.
For the Construction Team we can:
  • Offer a unique installation or Supply & Commission Only Service.
  • Supply Products which meet project specifications.
  • Provide Cost effective solutions.
  • Provide on Time Delivery and completion on project Installations & Commissioning.

We Design, Install, Commission & Maintain Systems across Essex, Kent, Hertfordshire, Suffolk & London (East, North & South East)

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Tel: 01621 397 277

34b Mayfair Industrial Estate
Maldon Rd. Latchingdon
Essex, CM3 6LF