I want to fit an aluminium flue for a GAS fire I'm having installed. How do I determine what diameter of flue I should use? 4"/5"/6"
Gas Fire Flue Diameter
- Thread starter Beckmeister General
- Start date
Hi it depends on what type of gas fire you are installing anyway it will have to be twinwall also its a lot to do with the length of the flue 5" would be the min and you will need a starter block at the bottom which is made of metal and has a full size opening around 21 H 16 " W then the closure plate fixes to that srewed with prs10 tape as a seal there should be no wood anywhere near the flue if its an internal one it will have to be firestopped as it passes through the floors all gas fire flues must have a cross section calculation and more so with decorative effect fires anyway whoever is fitting the fire must be corgi rgistered and should know what is req by todays standards it sounds like a ballanced flue would be better
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
