Please, please, please don't fall into the "scare story"
syndrome. There will be some here that will quickly jump into
I deal with these issues professionally and I am fairly well read
on the issues. Please do not take my word for it, and don't take
the word of alarmists. There are many sources for good technical
information, but this one is especially good and comes from a
fairly believable source:
Please read the entire article.
Mold has always existed.
Mold will continue to exist.
It is in the air all around you and on everything you touch.
Maybe the boy ( A John Travolta movie) that lived in the special
bio tent was free of mold, but the rest of aren't.
Mold can become a problem for humans when it is actively growing.
Black stains on exterior wood exposed to the sun is exactly that -
black stains. It may be rust from nails, some may have been
caused by mold, or other discoloration.
Bleach kills mold and there are commercial mildewcides/biocides.
It is not typically considered productive to kill mold. Any mold
that you kill with bleach, etc will be replaced by new mold. Mold
can only grow if it has food, water, proper temperature, and dark
(hidden from UV). If you remove any of these, especially the
water/humidity source, the mold can't grow. It is still there in
a dormant condition, but not actively growing.
The builder was telling you that the way wafer board and other
man-made sheathings are made is to saturate the chips, dust, by
product or whatever with resin and press and cook them into
sheets. Is it 100% mold free?, probably not. There are some
newer exterior sheets and drywall that are impregnated with
borates and/or other mildewcides or biocides.
If this thing is exposed to the sun and the walls are dried out, I
wouldn't pull it off. If you would feel better spraying
everything down with bleach or other biocide, do so. Please read
the EPA or other technical source information and make intelligent
decisions. Don't knee jerk to scare mongers.
A live Singing Valentine quartet,
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