The M.A.D cowl brand is a trade name of J D Burford Ltd, our family business is involved in a variety of sectors born from our main capabilities of metal spinning, metal forming and metal finishing. To see more details on J D Burford Ltd, please visit www.jdburford.co.uk. The Aderyn cowl is a directional cowl that provides complete dynamic protection to the chimney flue from wind-driven rain and downdraughts. 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. The M.A.D cowl range is by far the best quality and most comprehensive range of chimney cowls to help solve every type of chimney-related problem.

In terms of appearance, this cowl is marginally larger than your usual static down draught cowl, which allows it to be far superior to its counterparts in three key areas:- 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. 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. Colt Cowls are rightly proud of the quality of chimney cowls they produce, and are the ONLY chimney cowl brand with BSI Kitemarked chimney cowls, and or course where relevant all Colt Chimney Cowls are tested and certified under the new regulation BSEN 16475-7:2016 and BSEN-1856-1:2003. Compact design which allows it to be fitted side by side where space between chimney pots is restrictedBelow: Colt Cowls adverts from around the 1950's - over 4 million Colt Chimney Cowls have been sold in the UK Painted versions have a corrosive resistant powder coat finish, which makes it suitable for all fuels (see fuel chart) Regardless of which chimney problem you’re struggling with, MAD Cowls offers the most comprehensive range to help you solve it. Fully committed to solving all chimney related issues, MAD Cowls offers technical expertise and industry knowledge that is second to none. This has enabled MAD Cowls to design the most innovative solutions and offer the most aerodynamically shaped products to cement their market dominance. TheAnti Downdraught Cowl is not to be used with smokeless fuel.It is recommended using the MAD Junior Stainless Steel or MAD Senior Stainless Steel when in use with more corrosive fuels such as smokeless fuel

Observations have shown that birds do not like the Aderyn cowl. For obvious reasons! In addition, the moving body prevents birds perching and discourages approaches for the purpose of nest-building. Recently, Colt Cowls have also launc hed the new ECONO range of chimney cowls and birdguards including the Econocowl®, the Econolid® and the Econoguard®& Econotop ® which are all aimed at the budget chimney cowl end of the market. The solid fuel chimney liner cowl is designed to fit flexible flue liner to a birdguard cowl application, without the need to remove the chimney pot. The superior quality of this product makes it in our opinion the best model on the market.MAD Cowls – the provider of “problem solving chimney cowls”– was established in 2005. In the past 12 years, they have built a solid reputation as a trustworthy supplier and become one of the biggest brands in the field. The MAD cowl is the most popular compact anti downdraught cowl on the British market. The reasons for this are that its compact and aerodynamic shape allows it to combat downdraught. Alongside this, the M.A.D cowl features a drainage system designed to divert rainwater away from the pot when in use, whilst the internal stainless steel birdguard prevents birds leaves and vermin entering the chimney. As with all M.A.D cowls, the quality on offer surpasses that of equivalent inferior models being offered elsewhere. The MAD Cowl is not to be used with smokeless fuel. It is recommended using the MAD Junior Stainless Steel or MAD Senior Stainless Steel when in use with more corrosive fuels such as smokeless fuel 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 Anti Downdraught Cowlis the most popular compact anti downdraught cowl on the British market. The reasons for this are that its compact and aerodynamic shape allows it to combat downdraught. Alongside this, it features a drainage system designed to divert rainwater away from the pot when in use, whilst the internal stainless steel bird guard prevents birds leaves and vermin entering the chimney. As with all MAD cowls, the quality on offer surpasses that of equivalent inferior models being offered elsewhere. TheAnti Downdraught Cowl Benefits

The wind blowing across the top of any chimney is rarely a smooth, steady, laminar flow. The proximity of another building, trees, adjacent roof pitches or other feature will cause turbulence which can frequently cause problems. Obstructions often produce ‘rotors’ that result in reverse flow in the chimney, or downdraught. Everyone has experienced reverse flow, which is commonly only temporary, but causes the fire or stove to puff clouds of smoke into the room. 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. The nuisance caused by birds, small animals and leaves entering the chimney can be resolved by fitting this cowl. Explained further– It is our opinion that no spinning/revolving chimney cowl is suitable for use with peat or smokeless fuel without increased levels of annual maintenance, that is why we do not offer a guarantee when these fuels are used. Mentioned within our product bulletin above gives customers an insight into the vast knowledge we possess in the field of metal engineering. Be assured we know the limits of the materials used within this product type; It is our expressed opinion that no spinning/rotating chimney cowl can cope with such acidity levels on a prolonged basis, without failing. If it is your desire to use the spinning cowl with smokeless fuel, all we ask is to be prepared to carry out maintenance at shorter intervals. That said, our spinning cowls are made to the highest standards, and should a customer want to use a MAD Spinner cowl outside our warranted recommendations, then we have spares on hand, to ensure that our spinning cowls can be serviced and/or repaired more frequently.

When used with seasoned wood, coal or oil your spinning/revolving chimney cowl will need to removed each year and cleaned. We feel that other brands that do not mention this are misleading customers into thinking that the model they offer will not need this maintenance. All spinning cowls unless used with gas will inevitably suffer debris build up, this debris will need to be removed to ensure the product keeps spinning. All Colt Cowls are manufactured in an ISO 9001:2015 accredited factory. To be sure you are getting Colt Cowls quality please look for a holographic version of the Colt Cowls Quality Mark above. This hologram only appears on official Colt Chimney Cowls so you can be sure you are getting the genuine article, and not an imitation. Our budget birdguard provides excellent rain, wind, bird and animal protection and is available with a solid fuel birdguard (1″ x 1″ large holes) to prevent clogging Fitted with a multifuel birdguard which allows the cowl to be used for gas and oil as well as seasoned wood