The first is known as an air cooled chimney system.
Flat roof wood burner external flue regulations.
Regarding chimney height codes in the state of florida does the same rule apply to both gas burning fireplace and wood burning.
If the terminal is fitted less than 2 m above a balcony above ground or above a flat roof to which people have access then a suitable terminal guard must be provided and fitted made by tower flue components tonbridge tn9 1tb model k3 plastic coated.
Anon there are some different requirements for wood burning fireplaces and woodstoves e g.
C flue connector connects the fireplace to the flue.
A flue lining usually made of refractory concrete or impervious clay.
In effect the regulations recommend a minimum flue size of 150mm for any stove including stoves in which wood can be burnt unless the stove is defra exempt link to defra exempt stove suppliers.
A flue pipe must never pass through a combustible floor or ceiling or through an attic roof space closet or concealed space.
Minimum clearance from combustible material.
A maximum of 4 bends up to 45ยบ angle is allowed.
Such as its roof tiles or external wall.
Flues need to be 600mm higher than the highest part of the roof within 3 metres.
The flue will necessarily be quite close to the edge of the flat roof where it abuts.
Flues that are more than 3 metres away from the highest part of the roof need to be 1000mm above the flue penetration.
The distance between the cowl of the flue and the adjacent roof wall structure should be higher than 2 3 mtr.
As the name implies air cooled systems use air for cooling.
B flue must be high enough for sufficient draught around 4 5m in most cases.
On 2019 11 21 by anonymous.
Wood burning appliance venting is broken into two primary categories.
Positions where this could be a nuisance should be avoided.
If the flue exits the roof further down then it must extend high enough to acheive 2 3m of horizontal clearance.
The minimum chimney height recommended for minimum performance of wood burning and multi fuel appliances is 4 5 m from the top of the appliance to the top of the chimney.
A flat roof has a pitch of less than 10 degrees.
450 mm 18 in.
The minimum clearance may be reduced by 50 percent to 225 mm 9 in if suitable shielding is installed either on the pipe or on the combustible surface.
E smoke shelf prevents downdraughts.
When installing a new twinwall flue system if the flue exits the roof within 600mm horizontally from the ridge high point of the roof then the flue must extend a minimum of 600mm above the ridge.
In the article above on this page the section titled roof clearances for wood burning fireplaces.
I m installing a wood burner as part of this project and the flue has to go through the new flat roof.
D smoke chamber here the smoke gathers before being passed into the flue.
The purpose of venting systems for wood burning fireplaces and wood stoves seems similar.
The flue is not yet in position nor is it likely to be when the roofers return not a great situation i know but i want to plan for the flue as best i can.
