Up to 20kw burning smokeless fuel minimum 125mm diameter.
What size flue pipe for wood stove.
For pricing and availability.
Venting a wood stove.
Should the size of the flue be reduced at the back of the stove or continue to use the 8 inch stove pipe and reduce the flue to 6 inch at the thimble that goes into the chimney any advice will be appreciated.
6 7 and 8 inch diameter flue pipes must be at least 24 gauge in thickness.
That s worth remembering because many non defra exempt stoves come with a 125mm flue outlet which then requires upsizing to 150mm.
Per nfpa 211 the industry standard for residential style wood stoves.
A 6 inch stove requires a 6 inch flue.
Use black painted flue pipes.
The building regulations require that the minimum flue size for stoves are as follows.
My vermont castings wood stove has a 8 inch flue size.
Flue pipe joints should overlap 30 mm 1 1 4 in each joint in the assembly must be fastened with at least three screws.
It s not just stove pipe size you need to consider but proper fire rating of the flue or chimney materials clearances from combustibles cleanout access and code.
For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls.
Imperial 24 in l x 8 in dia black steel stove pipe.
Double wall stove pipe on the other hand requires only 8 inches of clearance from the ceiling and 6 inches from a wall.
However increasing the flue to a size larger than the stove s collar or flue flange is.
Up to 30kw burning any fuel minimum 150mm diameter.
Supervent 24 in l x 6 in dia black insulated steel stove pipe.
But keep in mind that most likely you need to obtain a building permit and inspections for installing any new heater anywhere don t view that as a stumbling block but.
Will it operate properly on the 6 inch flue.
12 4 4 1 the cross sectional area of the flue shall not be less than the cross sectional area of the appliance flue collar unless specified by the appliance manufacturer.
In most cases a step up is also fine.
That said if the stove you have chosen is defra exempt and has a 125mm outlet then a 125mm diameter flue may be used.
For pricing and availability.
Galvanized flue pipes must not be used because the coatings vaporize at high temperatures and release dangerous gases.
Imperial 6 in x 6 in 90 degree black steel stove pipe elbow.
So the regs recommend a minimum flue size of 150mm for any stove on which wood could be burnt unless it is defra exempt.
The way wood stoves and fireplaces work a correct match on fitting the flue size to the appliance is a must.
Once these clearances are met you must convert your stove pipe to class a chimney pipe for proper venting of your stove.
