Anti Downdraft Chimney Cowl

The Static Anti Downdraught Chimney Cowl is built for the British market and suits stoves and fireplaces. Its circular shape reacts quickly to air movement and helps support upward flue gases through the Venturi effect.

This anti downdraught chimney cowl helps stop light wind and air currents from causing smoke blowback. It also helps reduce moisture ingress and driving rain without restricting normal chimney performance.

It suits occasional and less severe downdraught. If the downdraught is severe and continuous, you need a H Anti Down Draught Chimney Cowl instead.

If the problem happens in calm weather with no wind, this cowl will not solve it. That usually means a lack of draught, which may require an electric chimney fan cowl.

This cowl will not solve downdraught caused by a chimney that sits too low. That includes chimneys more than 4 feet below the roof apex or close to taller trees, hedges, or structures.

The cowl uses 0.7mm stainless steel and suits solid fuel, oil, or gas. It has no moving parts, is CE marked, and is manufactured to BS EN1856-1:2009.

When fitted correctly, the Static Anti Downdraught Chimney Cowl will not detach in high winds. It also includes a one year warranty against faulty materials and workmanship.

The pack includes one Static Anti Downdraught Chimney Cowl, one strap, and one fixing screw and bolt. The 8-inch version also includes three legs, three claws, and wingnuts.

Fitting is simple and only requires a screwdriver. Sizes include 5-inch, 6-inch, 8-inch, 9-inch, and 12-inch in stainless steel, terracotta, and black.