Some bricks on my chimeny are covered with silvery patches. Under each
silvery patch is a black layer. Any idea what these are?
They seem to be wearing off.

The house is 15 years old but I bought it used, so I don't have complete
history of repair.

http://www.smugmug.com/gallery/6456116_BKWfr

On Nov 3, 4:44*pm, "james" wrote:
Some bricks on my chimeny are covered with silvery patches. Under each
silvery patch is a black layer. Any idea what these are?
They seem to be wearing off.

The house is 15 years old but I bought it used, so I don't have complete
history of repair.

http://www.smugmug.com/gallery/6456116_BKWfr

It looks to me like some type of plate or flashing was adhered to that
side of the chimney at one time. Looks like it was peeled off though.
Did you or the previous owner have the roof done lately?
I doubt it is anything to worry about.

james wrote:

Some bricks on my chimeny are covered with silvery patches. Under
each silvery patch is a black layer. Any idea what these are? They
seem to be wearing off.

The house is 15 years old but I bought it used, so I don't have
complete history of repair.

http://www.smugmug.com/gallery/6456116_BKWfr

Those are used brick. They could have been part of almost anything
before they went into your chimney, but I'd bet they were part of a
road. Had I been the mason, I'd have hidden that side. Perhaps the
mason thought they were quaint.

--
Steve Bell
New Life Home Improvement
Arlington, TX