Bricks, Masonry, Asphalt and Concrete - Rust stains on my masonry chimney
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Noel
01-10-06, 11:15 AM
I have recently noctied rust stains running down the sides of my chimney. I heard that this could be a problem. Where might these stains be originating?
flopshot
01-10-06, 04:43 PM
do you have a steel cap on the chimney ? anything bolted to it ? even an old fastener left by a contractor may cause this. :thumbup:
md2lgyk
01-11-06, 10:36 AM
This happened to me in one of my houses that had a wood stove. Turned out it wasn't rust at all, but creosote. It was condensing on the underside of the steel cap and running down the sides of the chimney.