Friday, 18 May 2012

You don't need a chimney to enjoy a solid fuel stove.


One of the fantastic benefits of having a solid fuel stove is that it can be adapted to pretty much any situation. Unlike other types of heater which may need to be piped or plugged in solid fuel is an independent source of heat.


Even if you have no exsisting chimney, a solid fuel stove can be installed with little fuss using an insulated flue to create a class 1 chimney system almost anywhere.


Insulated flue, also known as double skin and twin wall flue or factory made metal chimneys are produced by using a layer of insulation sandwiched between two pieces of metal pipe.


This means that the flue gasses can keep warm whilst travelling away from the appliance meaning they stay as a gas and float off. 
Cooled flue gasses (below 100deg) become solid and can settle along the flue way causing a flammable tar like build up which can create a blockage in the flue and prevent further gasses leaving the appliance safely.


Traditional single skin flue does not have these insulating properties and loses heat quickly. A chimney needs to be warm to draw the gasses away. 
Double skin flue also remains cooler on the outside meaning it can safely pass through walls and celings without causing a risk of fire once it starts to get warmed up.


There are many insulated flue manufacturers but unlike a single skin vitreous enamel flue which is usually a universal fit, Insulated flues are usually made to fit only the manufacturers own components, therefore it is important to be aware of the brand you buy in case you need any replacement parts or additional parts along the way. 


There are various ways in which the pipes can connect together depending on the manufacturer, some are twist lock, others are push fit but in most cases each length is locked to the next with an additional locking band for extra safety. The internal diameter or insulate flue pipe is usually 2" smaller than the external.


The pipes will need 50mm spacing around them from combustiable materials, should be boxed in if passing through cupboards etc. so that things cannot be leaned against them by accident and to be supported every 2mtrs either internally with appropriate floor and celing plates or externally with brackets to take the weight.


In cases where it is not possible to acheive the recommended 4.5mtr height for a chimney there are additional fans that can be added to help with draw if this cannot be acheived naturally.


If you are thinking of installing a stove and need advice on the correct flues to use why not give us a call on 01745 822344 or email us 

1 comment:

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