We are gutting a basement bathroom that has had boards and drywall glued to
the concrete foundation. We plan on redoing the walls with furring strips,
insulation etc but on removing the old boards we are finding a brown powdery
substance on the surface of the concrete, in some places in lines and
clumps but not all over. It is kind of fibourous looking in nature when
clumped together. Touched it with bleached with no reaction and also doesn't
look like mold, also brushes off. But don't know what it could be. Maybe a
silly question but could it be dirt leaching throught the concrete walls?
Done searches on mold and doesn't seem to apply to this stuff. The house is
38 years old and the old drywall could of been up for years.
firstname.lastname@example.org (DebbieOney) wrote in message
Could this be remanents of glue / adhesive?
The arrangement seems it might be.
I doubt it is "dirt leaching through the concrete walls".
Is there some feature of the wall that consistently matches the
location of the brown stuff?
Thanks for the interest and suggestions. On talking to the people that were
in the house before, they apparently had a red ant problem in the bathroom.
Starting to think this is the remants of an ant nest because of the sponge
appearance of it. Having taken some pics but don't think you can attach
pictures on the newsgroup.
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