Inishtrahull Island

The Commissioners of Irish Lights are currently considering the WINDWORKER in the lighthouse of Inishtrahull Island. For further information of lighthouses of Ireland see

Inishtrahull Lighthouse

Mr Glenn Murcutt - Internationally Awarded Australian Architect

In 1992 Mr Murcutt was awarded the prestigious Alvar Alto Medal for Architecture in Helsinki. Previous winners were Mr Joern Utzon of Denmark (designer of the Sydney Opera House), Mr Hakon Ahlberg of Sweden, Mr James Stirling of Great Britain, Mr Tadao Ando of Japan and Mr Alvaro Siza of Portugal.

Architect Glenn Murcutt

Mr Glenn Murcutt used THE WINDWORKER on a building denoted as the Marika-Alderton house for the Yirrkala people in Arnhem Land in Australia's Northern Territory. This building won a Royal Australian Institute of Architects award at both State and National levels. see "Murcutt" at

In association with Troppo Architects, he designed the Bowali Information and Visitors Bureau in Kakadu National Park also in the Northern Territory. This structure also won two RAIA awards, one at State level and the other being the Sir Zelman Cowan Best Public Building Award at National level.

Through Mr Murcutt's architectural influence, WINDWORKERS have been used within Australia and overseas the most notable being for Dutch architects in the Mission of the Benedictine Monks in Dar-es Salaam in Tanzania, West Africa.

Marika - Alderton House

In April 2002, Mr Murcutt was awarded the world's top architecture achievement - the Pritzker Architecture Prize. see

Marika - Alderton House

Export Tariff Code

Customs has advised that the international TARIFF CODE Number is 39259000. Organisations or persons importing the WINDWORKER can ascertain the cost of duty from this code.

Comparison tests of other (turbine) ventilators

Turbine Vents Turbine Vents Turbine Vents Turbine Vents Turbine Vents

In August 1997, the University of Technology in Sydney, Australia conducted tests on ALL turbine roof ventilators on behalf of the Australian consumer magazine 'CHOICE'.

The opinion of the magazine was published in November 1999 under "Spinning Hot Air"

It must be noted 'CHOICE' did not have the WINDWORKER tested and a challenge was issued to 'CHOICE' for a monitored comparison test between the WINDWORKER and the magazines selection of insulation. It was not accepted but still stands.

The following graph pertains to the ventilators tested and the results as compared to a 200mm open hole. This information was never published.

graph key

Mismatched Metals


It has been shown that when different metals come in contact, there is often the possibility that corrosion through electrolysis or other forms such as acid rain, can deteriorate life of the products. Extensive tests have been carried out by metal organisations such as BHP to examine the consequences from this action.

With most roof ventilators being manufactured with aluminium, there lies a large potential for this material to react with roof cladding on a host structure. It may not happen today, but it can happen.

Saffir - Simpson Hurricane Scale

Part designer of this hurricane/cyclone wind force scale Mr Herbert Saffir of Miami, Florida, USA assisted in early testing of the WINDWORKER in Florida in 1981.

Category Description Wind Speeds (mph) Storm Surge (feet) Northern Hemisphere examples dates
1 Minimal 74 - 95 4 - 5 Agnes 1972
2 Moderate 96-110 6 - 8 Cleo 1964
3 Extensive 111-130 9 - 12 Betsy 1979
4 Extreme 131-155 13 - 18 David 1979
5 Catastrophic Over 155 Over 18 Camille 1969

Beaufort Wind Force Scale

Category km/h knots Description Wave Description
Calm 0 0 nil wind no activity
Light Winds >19 >10 slight wind water ripples
Moderate Winds 20 - 29 11 - 16 medium wind, slight gusts small waves
Fresh Winds 30 - 39 17 - 21 constant, stronger gusts moderate waves
Strong Winds 40 -50
51 - 62
22 - 27
28 - 33
constant wind force, squalls large waves white crests
Gale Winds 63 - 75
76 - 87
34 - 40
41 - 47
slight structural damage, roofing lost high waves, white crests, water spray
Storm 88 - 102
48 - 55
trees uprooted, widespread structural damage very high waves, foam, poor visibility

For Cyclones that have impacted on Queensland, Australia since 1864

see also

Cyclone over Queensland

Cyclone over Queensland