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Graphical Construction Glossary >> Roofs and roofing. >> Roof Features >> Rotary Vent
Four 300mm Dia. (throat or hole size) wind driven rotary roof vents. This type of vent is very cheap simple. They are extremely light weight and just a hint of wind makes them revolve. The action of a breeze spins the vent and the spinning action pulls hot air out of the air space. The fixing of them is fairly simple. A base flashing is provided that should hopefully be tucked under a ridge cap and scribed to the sheeting at the bottom. The vents come with an adjustable base so that they can be made to sit level on any normal roof pitch. Note! they have to sit level to work correctly.
A 400 Dia rotary-vent driven by an electric extractor fan. This one serving a primary school's assembly area. A different category, heavy and sitting on a purpose made sheet metal base. If you didn't find exactly what you are looking for try this search tool that will search the site and the web. "What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience? "When we build, let us think that we build for ever."John Ruskin 1819-1900 |
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Please Note! The information on this site is offered as a guide only! When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area. It could be out of date! Regulations breed faster than rabbits! You must check your own local conditions. Copyright © Bill Bradley 2007-2012. All rights reserved. 
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