Purchasing an efficient chimney cowl is very important. In fact, installing some models, like a rotating cowl, on a properly functioning chimney can actually cause the fire to burn too hot and you could damage or over fire the wood burner or fireplace components. The device is easy to install, just make sure you purchase a size that properly fits your flue. It may sound silly but once you know that the width of an average UK house brick is 225mm ( 9" ) for imperial or 215 ( 8 and half " ) on a modern property, it provides a very accurate impromptu tape measure.The other factor you may need is internal pot size, this can also be guessed quite accurately if you know the average thickness of a chimney pot is about 25mm ( 1" ) , simply factor this in and you can work out most chimney pot width's quite accurately. When installing a chimney cowl, not only does it have to be properly placed and affixed, it also has to be the right size for your chimney. This is the most popular sized chimney pot in Ireland. Purchasing an efficient chimney cowl is very important. Add to Wish List Add to Compare. Darco. Rotary chimney cowl Turbowent is a device which in a dynamic way, uses force of the wind to increase chimney draught. new.24 month warranty size from 150mm to 300mm, perfect for insulated chimney flu The Rotovent Dragon is a device, which, in a dynamic way, uses the force of the wind to … FREE Shipping. Order … Galvanised steel: in heavy gauge quality steel completely galvanised after manufacture, in the following sizes: Pair it with chimney cleaner or conditioner for an easier clean. How to fit a chimney cowl: Fitting a chimney cowl, fitting a birdguard, fitting a spinning cowl, fitting a pot hanger cowl Check out these great videos on how to fit a chimney cowl. The other factor you may need is internal pot size, this can also be guessed quite accurately if you know the average thickness of a chimney pot is about 25mm (1"), simply factor this in and you can work out most chimney pot width's quite accurately. Privacy Policy     Advertising Policy     Share This Site     About Me     Additional Resources, This post may contain affiliate links so I earn a, This causes the wind to flow around the cowl which actually causes an, Although a spinning cowl can occasionally be used for multiple fuel types, it's commonly used for ventilation purposes only since it can actually draw too much draft and create over firing in a, If draft is not an issue for you, certain types of cowls can also be, Outside Wood Burning Stoves - Heating With Firewood. The H-cap stabilizes the draft rather than increasing it. £875.00. This will help to ensure that smoke doesn’t get pushed down your chimney and into your home, which could occur on windier days. We also manufacture different sized adapters allowing our chimney cowls to be mounted on pipes ranging from 3 inch in diameter up to and including 14 inch in diameter. This causes the wind to flow around the cowl which actually causes an increase in chimney draft. Please state size required. The best you can find is the H type. The other factor you may need is internal pot size, this can also be guessed quite accurately if you know the average thickness of a chimney pot is about 25mm (1"), simply factor this in and you can work out most chimney pot width's quite accurately. Report Ad. Their main purpose is to increase updraughts, and to prevent the wind from blowing smoke back into the home. Full range of Chimney Products including Cowls, Terminals, Caps, Stove Pipe, Twin Wall Chimney Flue Pipe Systems for Gas, Oil and Multi Fuel Appliances in stock and quickly dispatched. 1-2 days (2) Close. Chimney flues, like the ones over open fires, are designed to release waste gases from your home. HI SPEED WIND COWL SKU: AC01686. Under normal conditions the warm air from the fire will rise up the chimney emitting the smoke with it and dispersing it at rooftop level where it is less of a nuisance.In strong winds the pressure of the wind may overwhelm the updraft and push the airflow in reverse down the flue.