Ive attended a number of chimneys recently that have a stainless steel liner installed but unfortunately has corroded. This picture is the result of corrosion caused when sulphuric acid is formed within the flue. If left unchecked and not regularly swept a stainless steel flue liner will corrode, allowing deadly gasses to escape.
Remember stainless steel flue liners are installed only as a temporary measure and will need replacing eventually, some liners are only guaranteed for 10 years whereas some maybe 25 years. But either way, having the flue liner regularly swept and inspected will prolong the life of it. Some fuels used on an appliance can generate highly corrosive conditions within a flue. The effect of these conditions is the rapid corrosion and failure of the stainless steel flue, requiring the stainless steel flue to be replaced..
Remember stainless steel flue liners are installed only as a temporary measure and will need replacing eventually, some liners are only guaranteed for 10 years whereas some maybe 25 years. But either way, having the flue liner regularly swept and inspected will prolong the life of it. Some fuels used on an appliance can generate highly corrosive conditions within a flue. The effect of these conditions is the rapid corrosion and failure of the stainless steel flue, requiring the stainless steel flue to be replaced..
