Because the Aderyn cowl faces away from any wind, a low pressure zone is created on the lee side just above the chimney pot. The result is better chimney function, which reduces the chances of tar and creosote formation that can occur in sluggish flues. To work properly a chimney must have draw, both to clear the products of combustion and to provide fresh combustion air to the fire. This is equally true whether the chimney is serving a traditional open fire, a fire-box or a wood or a multifuel or woodburning stove. 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. The nuisance caused by birds, small animals and leaves entering the chimney can be resolved by fitting this cowl.

Compact design which allows it to be fitted side by side where space between chimney pots is restricted IMPORTANT– Spinning cowls are not suitable for use with peat, smokeless fuel, or freshly cut unseasoned wood. Any guarantees are void in conjunction with these fuels.The knowledge and technical support we offer our customers far surpasses that of our competitors, whilst our focus on solving chimney problems with modern designs and the most up to date of aerodynamically shaped products, cements our market dominance. Testament to our claims is that our range is available for all the largest builders’ merchants’ right across the UK along with all major chimney and flue distributors. If you have any enquiries or would like further information about us, then please complete and send the form below. 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. 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.

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. 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 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.With the emergence of eastern countries as a source of cheap product within the chimney cowl sector, in 2005 it was time for the Burford family using the brand name M.A.D cowls to step from the shadows of other manufacturers, and to market our own range of chimney cowls. As they say the rest is history, since 2005 we have established ourselves as the main player within the field going from strength to strength in terms of our dominant market presence across the UK. 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 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 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.