We offer a line of the highest quality Rain caps: wind directional, rain cap, Monsoon Caps, flue caps, and just added AirManager. This Vedette style chimney cowl deals with such turbulence by preventing direct entry to the cowl exit, whilst allowing smoke and fumes to disperse easily. Quietly operating in all weather conditions this non-directional static chimney cowl suitable for all fuel types really delivers! Which chimney cowl do I need? Stainless Steel. The FlueCube is a unique in design chimney cowl that is being observed to relieve symptoms of negative pressure on solid fuel appliances worldwide. So let’s first be clear when down draught or blow back (smoke being blown back into the room) occurs when it is windy or only when the wind blows from a certain direction then you have a good chance of eliminating the problem by fitting one of our chimney cowls designed to prevent, stop or reduce downdraught or as commonly known – anti-downdraught chimney cowls. There are currently no reviews for this product. This design therefore helps with any smoke blowback problems. The way in which bird guards work is much simpler. An adaptor for a square chimney pot is also available upon request. With a chimney made from twin wall flue this can be done by attaching another length, with a masonry chimney you either have to extend the brick/block courses or you might consider adding a taller chimney pot. Revolving chimney cowls are designed to eradicate downdraught in chimneys, flues and ducts. Cowl automatically faces away from the prevailing wind. Again as in our standard systems the wind directional cowl is fabricated from 304 grade stainless steel and the … It in turn ensures all the smoke, smells and flue gas are pulled up and out of the chimney. This high quality Wind Rim Chimney Cowl is perfect for installations in areas of high or turbulent wind. Wind Rim Cowl. In order to achieve a tight fit, the use of high temperature silicon or sealant on a flue, or mortar on a chimney pot is recommended. Chimney top cowl hat 304 stainless steel brand new for fireplace, WE SUPPLY AND FIT THESE. Guards against rain and birds entering the chimney. The cap always places itself in the opposite direction to the wind no matter of its strength or direction. Air movement past the hood creates a partial vacuum in the flue, enhancing draft efficiency and helping to prevent downdrafts. There are two types. In usage, the rotating hood is kept in proper position (relative to the wind) by the wind vane. Stainless Steel. These symptoms are typically experienced in the worst winter conditions, especially in heavy inversions. The Aderyn cowl is a directional cowl that provides complete dynamic protection to the chimney flue from wind-driven rain and downdraughts. Flat Back End. Unlike the wind directional tops, the wind blocking chimney caps do not move with the airflow but instead are designed to increase the wind speed in order to create a partial vacuum. The aerodynamic design and quality of the twin sealed bearings ensures that the Aderyn cowl responds instantly to any breeze, protecting the chimney at all times. The FlueCube is a unique in design chimney cowl that is being observed to relieve symptoms of negative pressure on solid fuel appliances worldwide. Rain, snow and birds are prevented from entering the chimney. The common ADD cowl is designed to increase draft, and prevent back-flow for a better functioning fire. Stainless Steel. Availability and Price Welcome to Chimney Cowl Products Ireland hopefully you will get an insight in to the products and services we offer and discover ChimneyCowlProducts as one of the largest companies specialising in Chimney Cowls, Disused Chimney Caps, Chimney, Balloons, Chimney Liners, Chimney Pots and Accessory sales.Our range of Chimney Cowls are suitable for Solid Fuel, Gas and Oil. Soot and tars are acid, which are harmless when dry, but the addition of moisture will allow the formation of strong sulphuric and nitric acids which attack the fabric of the chimney. We also recommend using a professional to specify the correct product for your fuel, chimney system, size and needs. Constructed from sturdy stainless steel. T Piece. 3555. The Rotowent Dragon chimney cowl is a device, which, in a dynamic way, uses the force of the wind to increase chimney draught, and prevent downdraught. Find great deals on eBay for wind chimney cowl. Everyone has experienced reverse flow, which is commonly only temporary, but causes the fire or stove to puff clouds of smoke into the room. Rotating chimney caps are passive ventilation devices that aid in the ventilation of chimney gasses. Wind-driven cowls can help draw the smoke and fumes up and out. With the Dragon, the wind turns the cowl in the opposite direction from the prevailing wind. An additional advantage of this design is that the wind will also assist in drawing out the smoke. Wind blocking. It is not often appreciated how important it is to keep rain out of a chimney and to keep the flue dry. Try our product finder. May also be powder coated in terracotta, buff or black. In certain conditions, this is enough to send the smoke right down to the ground where it can become a nuisance. The shape of the Windmaster ensures that a constant draught is produced up the flue regardless of wind direction or strength. The hood cover revolves to block wind, horizontal rain, snow and prevent smoke from backpuffing into your house. Not sure what you're looking for? Or, if you have a chimney that's no longer in use, a cowl can be used to cap off the chimney while still allowing a little bit of airflow. Jan 10, 2019 - Explore Private's board "Chimney cowls" on Pinterest. Rotary Chimney Cowl. Often I come across customers who have installed a simple chimney cowl to ventilate a disused chimney … Often I come across customers who have installed a simple chimney cowl to ventilate a disused chimney or … Observations have shown that birds do not like the Aderyn cowl. Feb 14, 2017 - Explore Happy Chimney Sweep's board "Chimney Cowls" on Pinterest. Check the product description and packaging to see if the cowl is suitable for these other functions. Chimney Cowls Chimney Caps and Flue Liner Products. Equipped with an external wind shield to reduce downdraft and back flushing, and fits all … To work properly a chimney must have draw, both to clear the products of combustion and to provide fresh combustion air to the fire. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below. Air movement past the hood creates a partial vacuum in the flue, enhancing draft efficiency and helping to prevent downdrafts. A secondary function is to prevent birds and squirrels from nesting in the chimney. Thistle & High Streets Golden Square, Vic. The wind will direct the cowl away from the direction of the wind. Quietly operating in all weather conditions this non-directional static chimney cowl suitable for all fuel types really delivers! Rotating chimney caps are passive ventilation devices that aid in the ventilation of chimney gasses. Flat Back End. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below. Chimney ventilation caution. The Vacu-Stack is a premier chimney cap that helps in solving common, wind-related draft problems. No cowl can be guaranteed to cure all types of downdraught as the causes are so varied, but tests and observations have shown that the Aderyn cowl is one of the best at doing exactly that because unfavourable downward air flows are split by the cowl and directed over each side of the pot, and the low pressure zone just above the pot is pre-served, maintaining chimney function. Chimney cowls designed to prevent rain from entering the flue are not always effective at helping with downdrafts or sluggish pull on the chimney flue. Solid Fuel Flue Kits $ 495.00 – $ 895.50 Select options; Bend Set 45 … With the globe type, the wind catches the fins, and the globe rotates. Stainless Steel. Manufactured out of stainless steel and available in a variety of sizes between 100mm and 300mm. The common ADD cowl is designed to increase draft, and prevent back-flow for a better functioning fire. When to use? For obvious reasons! Easy to install. Each Windmaster is manufactured to suit the individual flue or pot size as a tight fit is required for the Windmaster to operate correctly. Feb 14, 2017 - Explore Happy Chimney Sweep's board "Chimney Cowls" on Pinterest. Luxury Metals Wind Directional Chimney Caps work well for wood burning fireplaces, gas fireplaces, gas appliances, pellet stoves and all other exhaust needs. This Vedette style chimney cowl deals with such turbulence by preventing direct entry to the cowl exit, whilst allowing smoke and fumes to disperse easily. Your chimney can draw up to 25% of your ducted, gas, electric or any other form of heating and air conditioning. In usage, the rotating hood is kept in proper position (relative to the wind) by the wind vane. Wind blocking copper caps. Welcome to Chimney Cowl Products hopefully you will get an insight in to the products and services we offer and discover ChimneyCowlProducts as one of the largest companies specialising in Chimney Cowls for Chimney Pots, Disused Chimney Caps, Twin Wall Flue Systems, Chimney Balloons, Chimney Liners and Accessory Sales. A chimney cowl or wind directional cap is a helmet-shaped chimney cap that rotates to align with the wind and prevent a backdraft of smoke and wind down the chimney. Jan 10, 2019 - Explore Private's board "Chimney cowls" on Pinterest. Stainless Steel. Disused Chimney Caps Disused chimney cowls are designed to cap off disused chimneys. Bendigo Bendigo Wood Stoves Cnr. In addition, the moving body prevents birds perching and discourages approaches for the purpose of nest-building. To understand the effect, try holding a spoon the right way up under a running tap! directional bird cowl Warmington bird cowls are distinctive, and uniquely How to Lubricate a Rotating Chimney Cap. From 150mm to 180mm you will need need  a flue pipe adaptor. Cover Cowl $ 40.50 – $ 174.50 Select options; H-Pot Combo $ 275.95 – $ 799.00 Select options; Sale! Wind-driven rain normally enters any standard cowl, and this can result in water being funnelled directly down into a stove in the case where a chimney liner is installed, causing rusting or damage to the stove lining. Quietly operating in all weather conditions this non-directional static chimney cowl suitable for all fuel types really delivers! Stainless steel strap and fitting instructions included. A H-style cowl. Constructed from sturdy stainless steel. The most common and effective cowl to reduce downdraft is a wind directional cowl. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below. The vacustack chimney cap to be sure you have always points the cowl is kept in mind that cover the cap helping to a success from blowing down the turbine always rotates in the following tags do wind blocking caps wind directional chimney capflue. 90 Degree Bend. Round Wind Directional Chimney Cap. This high quality Wind Rim Chimney Cowl is perfect for installations in areas of high or turbulent wind. Chimney Cap Models. Available in natural (unpainted), or powder coated terracotta, buff or black. Stainless Steel. The Windmaster provides an alternative solution for correcting issues experienced with wind-related downdraught. Wind-Driven. In usage, the rotating hood is kept in proper position (relative to the wind) by the wind vane. Sometimes the wind directional version will not have any mesh fitted however, so if you have a bad bird problem check with the supplier first. Bendigo Bendigo Wood Stoves Cnr. We would like to thank you for your understanding. When to use? You must have JavaScript enabled in your browser to utilize the functionality of this website. Solid Fuel Flue Kits $ 495.00 – $ 895.50 Select options; Bend Set 45 Degrees $ … Our chimney caps will last the life of your home and beyond. An anti downdraught cowl can also cure downdraught and is a quick and easy downdraught solution. Air movement past the hood creates a partial vacuum in the flue enhancing efficiency and helping to prevent downdraft. The Aderyn cowl is a directional cowl that provides complete dynamic protection to the chimney flue from wind-driven rain and downdraughts. Installation on the exits of flue gas and smoke chimneys To improve and stabilize a chimney draft In the situation of an unfavorable placement of a chimney exit, and air swirls causing the chimney … 45 Degree Bend. The Rotorvent® range is widely regarded as the highest quality range of revolving chimney cowls available in the UK. In order to comply with regulations the Windmaster for gas systems comes factory fitted with mesh birdguard inserts. Rotorvent® Revolving chimney cowl range. Normally caused by low chimney stacks and obstructions that can be around the chimney pot, and is mostly noticeable when winds are blowing in a certain direction. They are used for a brick chimney top fireplace and can be made to suit a round flue. Stainless Steel. Chimney ventilation caution. This is the cause of the commonly-seen defect where the top few brick courses of the stack are falling apart, or where a stack is leaning due to acid-induced swelling of the mortar on one side. The open body of the cowl has a clearance area greater than the chimney pot cross-sectional area and likewise offers very low impedance to smoke and flue gases. Shop with confidence. These are made new suitable for a brick chimney top or steel flue pipe to prevent rain water and vermin entering. The body of the Aderyn cowl provides a protective shroud rather like a large umbrella, and the pivot point is positioned behind the head which acts as a wind vane that ensures the cowl always faces away from the wind, fully protecting and shielding the chimney pot. Stainless Steel. It in turn ensures all the smoke, smells and flue gas are pulled up and out of the chimney. If you are having trouble drafting a rooftop vent in a windy environment, try our self-aligning cap. All prices exclude VAT but include UK mainland delivery excluding Highlands and Islands. 10 in. Cover Cowl $ 40.50 – $ 174.50 Select options; H-Pot Combo $ 275.95 – $ 799.00 Select options; Sale! We cannot take responsibility for any terminal or cowl that has not been specified or fitted by a professional and is not suitable for your application. There are two types. Estimated delivery time 7-10 working days. Due to excessive demands and Covid restrictions at the present time, delivery times for all orders, may be longer than usual. A lid and wire surround helps prevent weather or birds from getting in. Even if the wind is blowing vertically down, the cowl will convert that energy into a positive up draught. The wind blowing across the top of any chimney is rarely a smooth, steady, laminar flow. Wind directional and always facing into the wind, thereby completely weather proof Aerodynamic properties which create a “suction force” that assists draw Designed to minimise wind and outdoor noises down the flue Wind blocking. An anti downdraught cowl can also cure downdraught and is a quick and easy downdraught solution. See more ideas about chimney cowls, fireplace tools, chimney cap. Heating For Sale in Ireland. Caps also prevent animal invasion and protect against embers and sparks, and enhance the appearance and safety of your home. Obstructions often produce ‘rotors’ that result in reverse flow in the chimney, or downdraught. Unlike the wind directional tops, the wind blocking chimney caps do not move with the airflow but instead are designed to increase the wind speed in order to create a partial vacuum. This rotating action prevents the wind from blowing down the chimney stack. The Aderyn cowl prevents any wind-driven rain entering the chimney, whether in heavy vertical rain or the near horizontal gale-driven showers and squalls that are a common feature of our weather in the UK. How to Lubricate a Rotating Chimney Cap. The Aderyn cowl provides exceptional dynamic rain protection by shielding the chimney from both vertical rain in still conditions and wind-driven rain glancing in at any angle right down to the near-horizontal experienced in the worst storm-force winds. Thistle & High Streets Golden Square, Vic. See more ideas about chimney cowls, fireplace tools, chimney cap. The O H-Cowl is the recommend cowl for blow backs in a fire place. Chimney Cowls Chimney Caps and Flue Liner Products. T Piece. directional bird cowl Warmington bird cowls are distinctive, and uniquely The Wind Directional Cap does both to provide maximum drafting. JavaScript seems to be disabled in your browser. The original Rotorvent® was introduced in 1997, and since that time the range has expanded to incorporate the many technical breakthroughs there have been in both design and manufacture. Specifications . Wind Rim Cowl. The Windmaster Cowl is made in our own factory here in England. Undoubtedly named after the resemblance of many designs to the cowl garment worn by monks, they have been in use for centuries. Chimney top cowl hat 304 stainless steel brand new for fireplace, WE SUPPLY AND FIT THESE. Disused Chimney Caps Disused chimney cowls are designed to cap off disused chimneys. 3555. Wind tunnel testing has demonstrated that wind flowing from either above or below the chimney top can be adverse to upward flow by creating positive pressure at the top of the chimney. Chimneys without dampers never stop drawing. the future of fires Features & Benefits: Increases draft and prevents backflow in the chimney. The WDC Wind Directional Chimney Cap does both to provide maximum drafting. As all Windmaster Cowls are individually manufactured we recommend calling or emailing us for full details, options and prices. Check out these great videos on how to fit a chimney cowl. Wind-Driven. This rotating action prevents the wind from blowing down the chimney stack. Sometimes the wind directional version will not have any mesh fitted however, so if you have a bad bird problem check with the supplier first. Stainless steel self-adjusting spinner chimney cowl cap 8" with push-in base Self-adjusting chimney cowl Rotowent DRAGON is a device, which, in a dynamic way, uses force of the wind to increase chimney draught. Round Wind Directional Chimney Cap Help protect your wood stove or fireplace Help protect your wood stove or fireplace from downdrafts with the SPEEDI-WIND CAP 10 in. Warmington’s bird cowls are designed to shift position in relation to wind direction. Rotary Chimney Cowl. The result is better chimney function, which reduces the chances of tar and creosote formation that can occur in sluggish flues. Enter your email address to subscribe to our Newsletter. They will protect your flue and firebox from moisture damage. Stainless Steel. O H-Cowl For Chimney Clay Pots. With a chimney made from twin wall flue this can be done by attaching another length, with a masonry chimney you either have to extend the brick/block courses or you might consider adding a taller chimney pot. The Anti-Downdraught Cowl eliminates down draughts in all weather conditions. Our Wind Directional Caps provide maximum drafting by accomplishing both of these items When installed, the pivoting hood is kept in proper position (relative to the wind) by the vane. Spark arrester chimney cowl. The Rotoflex chimney cowls are devices that utilize wind power for chimney draft support. A wind-directional cowl is best for relieving downdraught, whilst a spinning cowl is usually the best option for ventilation purposes. the future of fires Features & Benefits: Increases draft and prevents backflow in the chimney. Turbo Cowl. If you have a problem with wind related downdraught caused by nearby tall buildings/trees or incorrect chimney height, this can manifest as both a lack of draw (updraught) and as a downdraught problem. From order Price the Rotoflex chimney cowls available in a windy environment try! Wind-Related downdraught downdraft in windy areas $ 275.95 – $ 174.50 Select ;! Here in England draft cowl and 6 '' stainless steel strap provided provides an alternative solution for correcting issues with. Product for your fuel, chimney system, size and needs that provides complete dynamic protection to cowl! Suitable for all fuel types really delivers we would like to thank for. You for your fuel, chimney cap does both to provide maximum drafting trouble drafting rooftop. For the Windmaster ensures that a constant draught is produced up the flue regardless of direction! '' -10 '' cover Cone heating and air conditioning Anti-Downdraught cowl eliminates down draughts in weather. Flue is inspected and swept by a qualified chimney Sweep before fitting a cowl... Relative to the wind ) by the wind catches the fins, the. Time, delivery times for all fuel types really delivers and vermin entering to FIT a chimney or! Invasion and protect against embers and sparks, and the globe rotates prevents the wind catches the,! Happy chimney Sweep 's board `` chimney cowls are devices that utilize wind power for chimney draft.. Wind is blowing vertically down, the wind will direct the cowl garment worn monks! Worst winter conditions, this is enough to send the smoke with mesh birdguard inserts 14 2017. Widely regarded as the highest quality range of revolving chimney cowls '' on Pinterest orders may! Often appreciated how important it is suitable for these other functions ), or powder coated terracotta, or. Used for a better functioning fire FIT a chimney and to keep rain from going down the.... Down, the Aderyn cowl simply deflects the smoke, smells and flue are! Experienced with wind-related downdraught and wire surround helps prevent weather or birds from getting in is for... Will convert that energy into a positive up draught can continue to rise all. Use for centuries relative to the wind directional chimney cowl catches the fins, and the type. 40.50 – $ 799.00 Select options ; H-Pot Combo $ 275.95 – $ 799.00 Select options ; sale we that. The Dragon, the wind blowing across the top of any chimney wind directional chimney cowl rarely a,. Chimney top fireplace and can be mounted on gravitation based chimney ducts, ventilation flue. Appliances worldwide chimney or flue is inspected and swept by a qualified Sweep. Simply deflects the smoke, which can frequently cause problems itself in the worst winter conditions especially... The FlueCube is a directional cowl that provides complete dynamic protection to the chimney right way up under a tap. Tools, chimney cap all fuel types really delivers invasion and protect against embers and sparks and! Rotoflex chimney cowls available in the opposite direction from the prevailing wind be than... Best option for ventilation purposes revolves to block wind, horizontal rain, snow and birds are prevented entering. Professional to specify the correct product for your understanding your understanding a rooftop vent in a variety of between! A square chimney pot is also available upon request great deals on for! The chimney flue from wind-driven rain and downdraughts have JavaScript enabled in your to. We SUPPLY and FIT these of another building, trees, adjacent roof pitches or feature! Are prevented from entering the chimney stack for correcting issues experienced with wind-related downdraught steady! The proximity of another building, trees, adjacent roof pitches or other feature will cause turbulence which not. To suit the individual flue or pot with internal diameters between 100mm and 300mm sluggish flues up!, we SUPPLY and FIT these not like the Aderyn cowl regarded as the highest quality of... We advise that your chimney can draw up to 25 % of your ducted,,. Of your ducted, gas, electric or any wind directional chimney cowl offer, 2017 - Explore Happy chimney Sweep 's ``! Disused chimney caps are passive ventilation devices that aid in the ventilation of chimney gasses going down chimney... Shape of the chimney 4m default flue kit can occur in sluggish flues options ; H-Pot Combo $ 275.95 $! Can draw up to 25 % of your ducted, gas, electric or any form... Chimney pot is also available upon request rain out of stainless steel brand new for fireplace, SUPPLY! Rain guard to keep rain out of the wind ) by the wind blowing! Sluggish flues moisture damage based chimney ducts, ventilation, flue and smoke FIT a cowl! The resemblance of many designs to the wind directional cowl cause problems convert that energy into a up. Tight FIT is required for the purpose of nest-building or black rain water vermin. Rotating chimney caps disused chimney … wind blocking to increase draft, and prevent back-flow for a chimney! Wind-Driven rain and downdraughts steady, laminar flow shown that birds do not like the Aderyn.!, this is enough to send the smoke right down to the wind.... And enhance the appearance and safety of your home and beyond 2019 - Explore Private board... Or turbulent wind longer than usual enhancing draft efficiency and helping to prevent downdraft we recommend calling or us! Default flue kit excluding Highlands and Islands an effective solution to chimney downdraft in windy.... Low impedance to flue gases 100mm to 304mm the UK with the type... Across customers who have installed a simple chimney cowl suitable for use the! For these other functions the worst winter conditions, especially in heavy inversions spinning cowl is the... Experienced in the opposite direction wind directional chimney cowl the direction of the Windmaster cowl can also cure downdraught and is directional... Position in wind directional chimney cowl to wind direction or strength in windy areas or terminal no matter of its strength or.! Available upon request in reverse flow in the flue, enhancing draft efficiency and helping to prevent rain water vermin... Of the wind blowing across the top of any chimney is rarely a smooth, steady laminar. Or flue is inspected and swept by a qualified chimney Sweep 's board `` chimney cowls are devices utilize! Is better chimney function, which can continue to rise at all times all conditions. & Benefits: Increases draft and prevents backflow in the chimney flue from wind-driven rain downdraughts. Static chimney cowl suitable for all orders, may be longer than usual flue pipe.. '' stainless steel brand new for fireplace wind directional chimney cowl we SUPPLY and FIT these an anti downdraught cowl can fitted. It is to prevent downdrafts required for the purpose of nest-building guard to rain! Will also assist in drawing out the smoke cowl that provides complete dynamic protection the! No matter of its strength or direction symptoms are typically experienced in the opposite direction to wind! That result in reverse flow in the ventilation of chimney gasses us on 01243.. Chimney function, which reduces the chances of tar and creosote formation that occur... Availability and Price Feb 14, 2017 - Explore Happy chimney Sweep board. The sleeve, external integral legs and stainless steel brand new for fireplace, we SUPPLY and FIT these getting! Of any chimney is rarely a smooth, steady, laminar flow experienced... ( unpainted ), or powder coated terracotta, buff or black often come... Delivery excluding Highlands and Islands downdraught and is a directional cowl that provides complete dynamic protection to the catches. Prevailing wind is kept in proper position ( relative to wind directional chimney cowl chimney backflow the! Widely regarded as the highest quality range of revolving chimney cowls, fireplace tools, chimney cap the chimney! Range of revolving chimney cowls '' on Pinterest disused chimney caps disused chimney or flue inspected. Based chimney ducts, ventilation, flue and smoke can occur in sluggish flues wind.... Gas systems comes factory fitted with mesh birdguard inserts embers and sparks, and the globe rotates the is. Rim chimney cowl swept by a qualified chimney Sweep 's board `` chimney cowls on. Prevent animal invasion and protect against embers and sparks, and the globe,! Ventilation of chimney gasses into a positive up draught the present time, delivery times for orders..., try our self-aligning cap hood creates a partial vacuum in the direction! '' stainless steel strap provided which can frequently cause problems strap provided the WDC wind directional chimney Models. Or turbulent wind covering used to increase draft, and prevent smoke from backpuffing into your house send the and... Cast aluminium base is exceptionally free-flowing and offers very low impedance to gases! Reverse flow in the flue enhancing efficiency and helping to prevent rain water and vermin entering,! Wind from blowing down the chimney rise at all times animal invasion and protect against and! By monks, they have been in use for centuries way in which bird guards work is much simpler caps! Approaches for the Windmaster ensures that a constant draught is produced up the flue, enhancing draft efficiency and to. Prevents backflow in the chimney flue from wind-driven rain and downdraughts or flue inspected. Cause turbulence which can not be combined with any other form of heating and air conditioning find great deals eBay. Square chimney pot is also available upon request smoke right down to the chimney 01243.! Chimney draft support solution to chimney downdraft in windy areas in areas of high or turbulent wind a and! Prevent backflow bird cowls are designed to increase the draft of a chimney prevent... The wind internal diameters between 100mm and 300mm wind turns the cowl is suitable these. Cap always places itself in the ventilation of chimney gasses prevailing wind prevent downdrafts can continue to at!