Tornado whirlybirds & roof ventilators
Explore wind-driven Tornado roof ventilators for homes, workshops and warehouses. Compare sizes, understand the airflow, and get help planning the right setup for your roof.
No electrical connection required.
Chimney Champ options for braais and fireplaces below.
Tornado 300 · 350 · 500mm
Airflow figures with their test conditions.
Air inlets, positioning and weatherproofing.
Confirm the model, quantity and roof details.
01 / Tornado roof ventilators
Three Tornado sizes in our shop range. The final selection depends on the space, required air movement and site conditions.
Roof & building ventilationA compact option to consider for domestic roof spaces, garages and smaller buildings. Confirm the airflow requirement and number of units for your layout.
More airflow per unitA step up in published airflow from the 300mm model. Consider it for home and commercial projects where the ventilation design calls for this size.
Larger ventilation projectsA larger model for projects such as warehouses and workshops. Building volume, inlet provision and the ventilation brief determine the required quantity.
Airflow figures are published by Windmaster under stated conditions; see the comparison below. Images illustrate the Tornado family and are not shown to scale. Product links open the range page, where you select the required option and check current pricing.
02 / Understand the numbers
A turbine’s airflow changes with wind and the conditions in the building. A published extraction figure should always be read with its wind speed and test basis.
These figures help compare the three models. They are not a promise of constant airflow or a fixed temperature drop in your building.
Ask us to help with your project ↗| Tornado Model size | 15km/h windAirflow · m³/h | 25km/h windAirflow · m³/h |
|---|---|---|
| 300mm | 1,489 | 2,184 |
| 350mm | 1,863 | 2,731 |
| 500mm | 4,495 | 5,757 |
Source: Windmaster Tornado specifications. The manufacturer states a 5m average roof height / heat stack above working level for these figures. Actual site performance depends on the installation and conditions.
Start with what you want to ventilate: the roof void above a ceiling, or the occupied building below an open roof. Then assess volume, the required air-change rate, available inlet air and local conditions. Send us your dimensions or drawings so the model and quantity can be checked together.
How a ventilated roof space works
A roof turbine provides an outlet. In a ventilated roof void, planned outdoor-air inlets and a clear route through the cavity allow replacement air to move towards that outlet.
Keep the roof-space airflow separate from the rooms below. The ceiling insulation slows heat transfer while the ventilation moves air through the roof space.
Check the available intake openings, such as suitable eave vents. Keep the intended air path clear of insulation and obstructions.
Choose the turbine locations and quantity around the roof layout. Wind assists extraction, and rising warm air can also contribute.
Maintain the specified insulation and ceiling air barrier. Ventilating the roof void does not itself ventilate the occupied rooms.
Start with the existing roof design. Some roofs are deliberately designed as unvented assemblies. Check the construction before adding openings, and address leaks or indoor moisture sources as part of any condensation investigation.
03 / Braai & fireplace extraction
For smoke extraction from a suitable braai or fireplace chimney, choose a product designed for that job. Windmaster’s Chimney Champ uses rising flue gases and wind assistance to support the chimney’s draw.
Send the flue’s internal dimensions, its shape and the height from the fire to the proposed unit. The chimney arrangement, temperature and mounting details need to be checked before ordering.
Use the correct product: a standard Tornado roof ventilator must not be fitted to a braai or fireplace flue. Chimney Champ suitability also needs confirmation for the particular appliance; Windmaster advises against use on pizza ovens.
Before you choose
A clear specification helps you compare supply and installation quotes on the same basis.
Identify the roof covering, profile and pitch. Confirm the base, flashing and fixing arrangement, including any additional back flashing required by the installation.
Include your location and any coastal or corrosive exposure in the enquiry. Ask for the appropriate unit material, finish and compatible fixings for those conditions.
State whether you need supply only or an installation enquiry. Include roof access, building height and photographs so the work and any extras can be assessed.
Prepare your project details ↗04 / A useful starting point
Prepare a clear enquiry with the application, preferred size and details you already have. You can still get in touch if you have not measured the building yet.
Tell us which space you want to ventilate. For a chimney, photos and internal flue dimensions help us ask the right questions before quoting.
Review your details before opening WhatsApp.
We’ll confirm the model, quantity, suitability, availability and quotation. Installation options are assessed for your location and roof.
05 / Before you buy
Start with the space and the problem you want to address. Then compare products against the actual roof or chimney arrangement.
Ask about your project ↗“Whirlybird” is commonly used for a rotating turbine roof ventilator. Tornado is Windmaster’s product range. Our featured roof-ventilation options are the 300, 350 and 500mm models, with Chimney Champ covered separately for suitable chimney applications.
The Tornado turbine requires no electrical connection. Wind assists extraction and natural convection can also drive airflow. The amount of air moved varies with wind, temperature difference, available inlet air and the installed arrangement.
The answer depends on the volume and use of the space, required air changes and the conditions at the site. A roof void and an open warehouse have different ventilation needs. Send measurements, roof details and any specification so the size, quantity and inlet provision can be considered together.
They perform different jobs. Insulation slows heat transfer, while roof-space ventilation exchanges air with outdoors. Where a roof is designed to be ventilated, plan both with a properly detailed ceiling and clear airflow paths.
There is no single temperature reduction that applies to every building. Ventilation can help manage conditions in a suitable roof space, but persistent moisture also needs investigation for roof leaks, indoor air leakage and moisture sources. The result depends on the whole construction and climate.
Windmaster provides installation guidance for both tiled and IBR roofs. Confirm the mounting, flashing, pitch and fixing details for your particular covering before ordering. Weatherproofing depends on the complete installation, including joints and any required back flashing.
Give us the site location and exposure conditions. Ask for the unit material, coating and fixing specification to be confirmed for that environment. A colour name or product photo alone is not enough to establish corrosion suitability.
No. Windmaster specifically separates the Tornado roof range from Chimney Champ. Use a chimney product appropriate to the appliance and confirm the flue dimensions, installation height and temperature conditions. Do not assume a standard roof ventilator is suitable for hot flue gases.
The model, material, finish, number of units, flashing, roof access and location all affect a quote. Use the product links to check listed options, then send your project details for supply and delivery pricing or an installation enquiry.
From roof details to a clear quote
Share your roof or chimney details. We’ll help you confirm the product options and the information needed for a useful quotation.
