TEK’s natural ventilation passive stacks are available for roof mounting. They are available in any size and shape, square, rectangular, circular. The size is dictated by the air volume, pressure drop and the available footprint on the roof to be acceptable to the planning authority.
There is also a choice of construction featuring a choice of mitred corners or removable sides. A roof option of monopitch, pyramid or barn is offered too. These natural ventilation passive stacks can be mounted on flat or pitched roofs.
Passive stacks are used in conjunction with our wall vents and large roof units can operate utilising atrium voids and be set for summer or winter ventilation.
