When I order the Gazco Onyx Liv 3 Balanced flue gas Stove 1What width vertical flue pipe do i need. 2What type of cowl do i need for a roof exit 3 will the external flue need to be 300mm or 600mm clear of a pitched slate roof Thank you for your help in advance Sarah Stirling

Thanks for your enquiry.

If you select the top exit, vertical balanced flue kit you'll receive x2 1000mm lengths of flue and a 1000m terminal length that completes the 3m system (if you need additional flue lengths we can supply these). If the flue exits the roof within 600mm horizontally of the ridge, the terminal must finish at least 600mm above the ridge. You might get away with a lower terminal height if the flue exit is further away from the ridge.