There are 2 types of chimney flue liner 316 and 904 and are both stainless steel. 904 is a better quality stainless steel and is suited to customers who will be burning smokeless fuel and coal. 316 is cheaper and is suited to customers who need to keep to a budget and who will be burning mainly dry wood.
Lining your chimney is a messy and expensive exercise so our advice would be to pay a bit more for 904 stainless steel and avoid relining your chimney for many more years.
Using 904 stainless is a must if you are installing a boiler stove as a boiler stove will most likely to slumber overnight which means that because the air supply is reduced the corrosive gases are not burnt off as effectively.
We also supply Chimney flue liner installation kitsFREE UK Mainland Delivery