MAD Cowls manufactures 3 different models of static anti-downdraught chimney cowls – the Senior, the Junior, and the MAD. All models have an aerodynamic shape that will divert directional wind across the top of the chimney to draw the smoke out and preventing downdraughts. 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. 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. Launched in 2005, the M.A.D (metal anti downdraught) brand of chimney cowls has become the most dominant brand in the UK.

Colt Cowls supply the largest range of chimney cowls in the UK, and have a reputation for producing the highest quality chimney cowls and chimney birdguard cowls available on the market. The cast aluminium base is exceptionally free-flowing and offers very low impedance to flue gases. 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. An effect of standard Chinese-hat type cowls which is not often appreciated is the tendency for smoke to ‘bounce’ off the underside of the cap and travel downwards thereafter. To understand the effect, try holding a spoon the right way up under a running tap! In certain conditions, this is enough to send the smoke right down to the ground where it can become a nuisance. By contrast, the Aderyn Cowl simply deflects the smoke, which can continue to rise at all times.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.

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. 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 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.

Below: Colt Cowls adverts from around the 1950's - over 4 million Colt Chimney Cowls have been sold in the UK 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.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. The incorporation of swages and strengthening beads on the lid of the MK2, allow for increased structural integrity and durability for longer periods of service. 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. 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. If you have any enquiries or would like further information about us, then please complete and send the form below.