Ventilation

Various types of ventilation are available as there are many different requirements:

Domestic

To remove the build up of heat in enclosed areas
To remove condensation in roofs

Commercial / Industrial

To remove the build up of heat in enclosed areas
To remove the build up of C02 in the enclosed areas
To remove condensation in roofs
The supply of air for powered machinery that require H20 to run efficiently

Air movement for supplying a workable temperature for personal and machinery.

There are many types of manufactured vents. For domestic roofs there are circular roof vents and ridge strip roof vents.

The circular roof vents are usually supplied with a base that can swivel and stay self-waterproofing to suit any roof pitch. There is the basic model that has an open throat and then you can get the units with a damper fitted to the throat section. This allows you to control the amount of air volume movement from the inside to the outside. This can also be electronically controlled or controlled out manually.

The strip roof ridge vent usually has a maximum throat of 200 mm.

Not many of the above units are supplied with vermin proof throats. They also don’t cater for high fire risk areas

Commercial / Industrial

The circular roof vents again are usually supplied with a swivel base that suits any pitch and is self waterproofing. However as you get into larger sizes 500 mm plus one must be aware of the windage and movement pressures that are placed on these units. Design is a key issue for a unit that will get you plenty of maintenance free time.

Strip vents start from 150 mm right up to walk through models that have a throat size of 2000 mm.

Wall ventilators are very common for plant rooms and Industrial areas where air is required at a low level and is released through roof vents as machinery can be supplied with an adequate volume of oxygen for combustion. These are usually combined with a roof vents management system that creates the appropriate volume of airflow over the machinery.