MAD Cowls Anti Downdraught Chimney Cowls - Various Styles Terracotta, Strap Fix

Product Information

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. 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 Aderyn cowl is a directional cowl that provides complete dynamic protection to the chimney flue from wind-driven rain and downdraughts. As with all MAD cowls, the quality on offer surpasses that of equivalent inferior models being offered elsewhere.Browse JJ Roofing’s selection below to see which MAD Cowls chimney cowl will be the most suitable option for your roof. The result is better chimney function, which reduces the chances of tar and creosote formation that can occur in sluggish flues. In addition, the moving body prevents birds perching and discourages approaches for the purpose of nest-building.

The reason for the 3 stars is that the legs are too stiff tobend under the roll top of some pots to give extra security agains being blown off in a storm. The stealthy design promotes maximum aerodynamic efficiency in dealing with downdraught and smoke blow back, whilst the shape gives maximum protection against driving rain. 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 nuisance caused by birds, small animals and leaves entering the chimney can be resolved by fitting this cowl. 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. In recent times we have also reengineered the senior cowl so that the structural integrity will stand up to the biblical weather our country has experienced of late.