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Windkat Brochure
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Windkat August 2010
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How Windkat Works
Windkat uses a system of injection nozzles to maintain constant negative pressure in any flue to which it is fitted and is the most effective anti-downdraught cowl on the market.
windkat diagram
The purpose of a flue is to draw exhaust gases, from combustion in fireplaces or stoves, up the chimney and safely out into the atmosphere. There are however certain factors including local topography (hills or trees), building design (low chimneys) and most commonly weather conditions (strong winds or thermal inversions) that can act like a ‘cap’ on the critical zone where the chimney meets the atmosphere. This creates overpressure and stops exhaust gases from rising and therefore exiting the building.
These factors can lead to the unfortunate scenario of a fire that is difficult to light and/or burns irregularly. But BEWARE, as a poorly functioning flue can also lead to highly toxic exhaust gases backing-up, coming back down the flue (downdraught) and entering your room which can be extremely dangerous and even life threatening.
As well as having your chimney checked regularly by a qualified sweep, the Windkat is the best solution on the market today for avoiding these downdraught problems. But there’s even more! Not only does the Windkat stop downdraught, but its unique ability to maintain a steady even draw in virtually all weather conditions leads to greatly increased efficiency in combustion. This means that wood and other fuels are burned at their optimum rate meaning more complete combustion which in turn leads to pollution reduction and financial savings.
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Why is Windkat better than other anti-downdraught chimney cowls?
Apart from stopping downdraught, Windkat will provide a constant even draw in your chimney unlike competitor products that either have little effect at all (many other static cowls) or can make your chimney draw too much or too little depending on the wind (spinning cowls). Constant draw makes for an efficient fire that’s a pleasure to use. Windkat is also a pot and cowl all in one so if you’re having a new fireplace or stove installed its worth fitting a Windkat straight away as you will need a pot/cowl anyway and the features of the Windkat will improve your fire’s efficiency and guard against any future weather related problems.
Does the Windkat prevent downdraught?
Yes, Windkat uses a system of injection nozzles to maintain constant negative pressure in any flue to which it is fitted and is the most effective anti-downdraught cowl on the market.
Does the Windkat have any effect on wind noise?
We cannot guarantee that the Windkat will reduce all wind noise, but as Windkat gives all fires and stoves a more constant even draw excessive wind noise is likely to be reduced.
How do I find out what size I need?
By measuring the internal diameter of your chimney flue at the top and following the guidelines on Advice Centre.
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Quick Overview
The Windkat Baseplate anti downdraught chimney cowl is suitable for flue sizes from 13cm to 30cm.
It is designed to be fitted onto the flat top of concrete or brick chimney stacks. Screws and plugs are provided as well as a tube of heat resistant silicone which is used to make a seal between the base plate and the chimney stack.
The base plate configuration allows the Windkat anti downdraught chimney cowl to be easily fitted onto the flat top of brick or concrete chimney stacks.
The square base plate is fastened to the chimney stack with four screws and the cowl simply slots on top. No concrete is needed!.
The Windkat replaces any existing chimney pot and cowl. Stacks must be sound before the cowl is attached and while many people install thier own cowls we recommend you have your local sweep do the work as they can check your chimney and flue at the same time.
It is designed to be fitted onto the flat top of concrete or brick chimney stacks. Screws and plugs are provided as well as a tube of heat resistant silicone which is used to make a seal between the base plate and the chimney stack.
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Quick Overview
The Windkat Plug-in Base anti downdraught chimney cowl is suitable for flue pipe sizes from 78mm to 296mm.
Choose the Windkat with a plug-in connector size from 1mm to 6mm smaller than the internal diameter of your flue pipe (the plug-in connector must fit inside your flue pipe). The heat resistant silicone provided should be used to fully seal the connection.
The plug-in configuration allows the Windkat anti downdraught chimney cowl to be attached directly into flue pipes (usually projecting metal pipes). The plug-in attachment comes in various sizes and the correct size to choose should be 1mm to 6mm smaller than the interior diameter of the flue pipe into which the cowl is to be fitted. The cowl and plug-in attachment simply slot into the flue. Installation takes seconds and some heat resistent silicone (provided) makes sure of an airtight fit
NB: please make sure you measure the diameter of your flue carefully and your flue remains at a constant diameter for at least 30cm down to allow the plug-in adapter to plug-in fully.
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Guaranteed for 5 years
The Windkat chimney cowl is manufactured from high grade stainless steel. It has no moving parts, so there is no maintenance and nothing to go wrong. The manufacturer offers a 5 year guarantee the Windkat.
Suitable for most fireplaces and stoves with sizes available for all type of chimney
Use on appliances fired by solid fuel or oil (not gas)
Also suited for ventilation purposes
Easy installation and a hinged top for easy access makes the Windkat a firm favourite with chimney sweeps
Made from high grade stainless steel with no moving parts to wear out
5 year warranty
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TRADE CUSTOMERS
If you are one of our Trade Customers then click below to purchase COWLS.
Click here to buy COWLS 
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Contact Details
Tel: 01253 884972
Fax: 01253 893752
Email: sales@mi-flues.com
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May Price Increase
Price increases from May 1st 2010
- All Flexible Liners - 10%
- Quattro Accessories - 5%
- Clay Pot Adapters - 5%
- MF13 Ancillaries - Various
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Saturday Opening
We are now open on Saturdays - from 10am until 2pm.
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Rotor Cowl Adapter
NEW for Dinak DW
Rotor Cowl with adapter is now available ex-stock
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Stacking Bird Guard
New Product
Stainless Steel stacking Bird Guards
now available
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NEW Document J
the new document J comes into force from
1st October 2010
Download a copy here
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Windkat Cowls
We are pleased to announce that Mi-Flues are the distributer for Windkat Cowls
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Price Increases
Vermiculite rises to £20.49 a bag on December 1st 2010
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MI-VIT Swept Bends
We are pleased to announce our new range of fully swept vitreous enamel bends. They are available in 125mm and 150mm diameters in angles of 90, 110 and 45 degrees.
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Price Increases
DW Black prices up by 10% on December 1st 2010
DW prices up by 2.5% on December 1st 2010
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Price Increases
Various systems have had price increases this month. All flex liners have been increased by 15%, flashings by 6% and accessorie4s, cowls, Nova, IL, ILS, and QC by 5%.
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New Products added!
Check out the new Long Tail adaptor and the Top Hat adaptor for multi-fuel liners.
Both 125mm and 150mm versions of these new adaptors have been added.
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