Chimneys Cowls, Pots & Accessories

Chimneys cowls, pots and accessories play a vital role in ensuring your flue system operates safely and efficiently. From preventing downdraught and bird intrusion to improving draw and protecting against rain ingress, the right chimney components keep your heating system performing at its best while extending the lifespan of your chimney stack.

Our Chimney Cowls, Pots & Accessories Range

McMahons stocks a comprehensive selection of chimney products to suit traditional and modern installations alike.

• SHL anti-downdraught cowls - static stainless steel chimney cowls in 5 inch, 6 inch, and 8 inch sizes that shield the flue terminal from wind and air currents coming from any direction, preventing downdraught from pushing smoke back into the fireplace, stove, insert, or range.
• SHL anti-bird and anti-rain cowls - pot-hanging cowls in 5 inch and 6 inch that prevent birds from nesting in unused or intermittently used flues while also keeping rain out, maintaining a weathertight seal at the chimney terminal.
• SHL stainless steel flue liner kits - complete pot-hanging flue liner kits in 6 inch x 9m including twin wall flexible liner rated to 600°C, manchette, start-off adapter, and integral anti-bird/rain cowl, allowing connection to flexible liner and chimney pot concurrently.
• Aluminium EPDM flashing units - small and large aluminium flashing units with EPDM rubber collar for weatherproofing flue pipe penetrations through pitched roofs, accommodating standard flue pipe diameters without the need for lead flashing.
• Chimney balloons - inflatable chimney draught excluders for sealing unused or intermittently used fireplace openings, preventing cold air, downdraught, and heat loss through open chimney flues.

For a complete roofing project, browse our full Roofing & Ventilation Products range, including Lead Flashing & Roll for weathertight chimney abutments.

Selecting appropriate chimney fittings depends on your fuel type, flue diameter, and local exposure conditions. Solid fuel appliances require different cowl specifications than gas installations, while properties in high-wind areas benefit from anti-downdraught or spinning cowl designs. Always check manufacturer guidance and building regulations for compliance.

Why Choose McMahons for Your Chimney Supplies?

With over 190 years serving Ireland's building trade, McMahons offers knowledgeable guidance on chimney products for every application. Our staff can help you identify the correct fittings for your specific flue system, whether you're replacing a damaged pot or upgrading to a more efficient cowl design. Ready to complete your chimney installation? View our delivery options to get your materials on site when you need them.