Roof Cowls

Roof Cowls for cirlcular metal duct.

A roof cowl is an ideal fitting to use whe you are venting an extractor fan through the roof.

• Male fitting with swage (slips directly into spiral duct). Fix using recommended methods.
• A roof vent cowl discharges air in a vertical position.
• Used in applications where a duct termination is required at roof level.
• Fitted with mesh to stop wildlife entering into the duct termination point.
• Design incorporates a top hat to prevent rain entering the duct.
• Circular end has a male connection to fit directly into circular spiral ducting (secure using recommended fixing methods).
• Please select from the drop-down menus for standard sizes and corresponding prices.
• For custom sized cowls please contact us.

When should I use a vent at roof level?

Basically when you are venting an extractor fan through a roof a cowl for venting should be used as it will stop water ingress. Our metal cowls also have a wildlife mesh to prevent animal ingress. The top hat on the cowl is specifically designed to stop rainfall entering to duct system.

Do I need to use a flashing when expelling air through a roof?

It is advisable use a flashing to create a water tight seal where the duct comes through the tiles.