Windkat anti-downdraft anti-wind cowl DTW


Cowl for exposed chimneys or turbulent conditions. Fits liners or clip-together twin wall.

Customer Reviews

Based on 2 reviews
Stove & Flue purchase

We have found Stovefitters' online information invaluable to making decisions and understanding what 'bits' we need to install our own multi-fuel burning stoves. We live above the imaginary line and even with the pallet delivery charge Stovefitters undercut the price of local suppliers in Inverness. We would buy again from them just to show our appreciation for their friendliness, openness and honesty when it comes to providing information on stoves and flues.

Twinwall Flue design & supply. (No.2).

We have just installed our 2nd twinwall flue & stove design by Julian at stove fitters, this time we had a DG Ivar 8 with Twinwall in our Grade 2 listed Barn in Sussex.
Yet again the process was straightforward, efficient & 1st class on price. A couple of items delayed due to lockdown were quickly sorted out by Arron.
If you are looking for a stove with/without a flue design, I can't imagine there is a better service anywhere else.
Thank you.
Lyndon, Hooe


About the Windkat Cowl

man with cowl on his headSome chimneys just struggle to work as well as we would like.

Like us humans chimneys can be a little on the short side, or too tall, or too fat and old. Chimneys that live in a particularly windy or turbulent location can often prove to be under achievers.

This is where the Windkat cowl comes "riding to the rescue". That chap in the picture above actually does arrive, cowl on head, astride a large black stallion, delivering your spanking new Windkat cowl directly to your door (pleaser note that should he prove unavailable we may use Parcelforce or some other courier).

cowl suction diagramThe Windkat cowl works by directing gusts upwards via a series of ducts and nozzles, the resulting flow of air assisting the draw of the chimney rather than fighting against it.

This design, unlike spinning cowls, has no moving parts and therefore there is nothing to "stop working" or "seize up".


Fit to Twin Wall

It is very easy to fit your new Windkat cowl to your clip-together twin wall chimney. Just add a lit of the supplied heat-proof Silicon and slide it in.

Fit to Liner

Fit to chimney liner with the supplied Jubilee clip. If fitting to stack screw down to brickwork. If fitting to top of chimney pot use provided heat-proof Silicon.

Fit to Chimney Stack

Screw down to top of stack - simples.



Three Colour Options






Windkat in Use in High Winds

I fitted a multifuel stove into our cafe in North Berwick, Scotland. We are right by the sea so prone to strong winds. The cafe roof is single story and surrounded by three story buildings so down draughts were making the stove unusable. We tried various cowls with no success.
Then we tried the Windkat. Immediately the problem was solved. In the past few weeks we’ve had very strong, swirling winds. You’ll see from the video how much the wind is going downwards, but still the smoke is pulled from the chimney.

Delivery Promise

We offer 14 days from delivery to report any courier damage to your parts. If your item is damaged by the courier we will replace or refund as desired.


We will happily strive to match any price you may have from any other supplier as long as the other supplier has it in stock.
Offered an "ex-display" or "shop soiled"? We will strive to offer you a new stove for the same price.

Already have a chimney? You need 1. Stove 2. Liner 3. Fitting Pack 4. Chimney closure plate (Hardiebacker board from Builder's merchants or galvanised sheet).That's it!
No chimney? Check out our shed kits or let us design your clip-together chimney design - easy peasy.

Julian Patrick, author of the Stovefitter's Manual

Stovefitter's Warehouse is owned and managed by Julian Patrick, blogger and author of The Stove Fitter's Manual. Julian was previously a full-time installer of wood-burning stoves (including solid fuel heating systems). He laid down the tools in 2013 to write his stove manual and open a small shop in North Wales (the Wood Stove Hut, soon to grow into The Stovefitter's Warehouse).

More info about the company and Julian's team here