What is Flaunching on a chimney stack?
It defines flaunching as: ‘a mortared slope around a chimney pot or at the top of a fireback. ‘ Flaunching is sometimes referred to as benching. It is often a mixture of mortar (typically a 3:1 ratio of especially strong sand and cement) that holds the chimney pot in place at the top of a chimney stack.
What is the function of a chimney pot?
What is a Chimney Pot? A chimney pot is an extension that can be visibly seen on the topmost part of the chimney’s smokestack. Its purpose is to elongate the smokestack to produce a better draft for combustion.
How long do chimney pots last?
Different liners have a different life expectancy. An entry point stainless steel flue liner will have a 10 year guarantee. A more expensive stainless steel liner will have a 20 year guarantee. Isokern pumice liners have a 10 year guarantee.
What is Flaunching used for?
Flaunching is the name given to the bed of mortar which holds chimney pots in place on top of the chimney stack. Flaunching also helps prevent rainwater permeating the top of the brick or stone of the stack. In older homes, lime mortar was used for flaunching, and this will deteriorate over the years.
Why are chimney pots so expensive?
These pots generally are more expensive than metal chimney pots because they take quite a bit of time to construct and are often installed when the house is built, making it an important part of the way that the chimney functions naturally. The purpose of a chimney pot is to increase draft in the chimney.
How hot does a chimney pot get?
Fuel Burning A chimney operates on the principle of having a natural up draught. One factor in creating the up draught is maintaining a warm flue gas temperature, of between 150°C and 450°C. Burning wood or multi fuel slowly with insufficient air supply, particularly on stoves or closed appliances must be avoided.
What’s the best chimney cowl?
What are our best selling anti-downdraught chimney cowls? The Colt Top Cowl. If you burn gas or oil then Colt Top Cowl for all fuels is for you but if you only burn wood or coal in an open fire or if it is a multi-fuel or woodburning stove then the slightly cheaper Colt Top cowl for solid Fuels .
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