Oil Burner Exhaust On Metal Roofs Rusting

Working on our 133 year old house i found the furnace exhaust pipe rusted out.

Oil burner exhaust on metal roofs rusting.

Furnace exhaust repair rusted pipe don. The instant i capped my furnace flue rust like deposits began to condense on the cap drip to the chimney crown and then down to stain my metal roof. To remove powder and soluble rinse it with water properly. First and foremost remove any oil grease and dirt present on the rusted metal.

You don t want this to occur to your furnace especially along the heat exchangers. Talking about how i fixed it. Remove the flakes of the rust and paint using a wire brush. The great danger of rust to metal is that it eats away at the metal and eventually causes it to crumble and flake away.

It was serviced previously by his oil co. In sum corrosion and stains on and around metal chimneys include rust flue gas deposits and corrosive condensates though not primarily from oil dye as you suggest rust stains from contact between dissimilar metals occasionally sulfates the main component and even bacteria in oil fired systems. Rust is the result of oxidation that occurs when metal oxygen and water mix. If cracks occur in a heat exchanger because of the weakening.

After multi visits with riello and other consultants we changed the burner to a beckett af2 and my combustion parammeters were perfect. My chimney company say it s sulphur deposits.