[CAUT] Re: Temperature/Humidity

[Chris Solliday]

Thank you Jim Ellis.
Chris Solliday
----- Original Message ----- 
From: "James Ellis" <claviers@nxs.net>
To: <caut@ptg.org>
Sent: Sunday, January 22, 2006 11:09 AM
Subject: [CAUT] Re: Temperature/Humidity


> Chris,
>
> It's a problem that just won't go away.  Summer and winter present
opposite
> problems, depending upon the climate where you live.  The basic thing to
> remember is:  Warm air holds more moisture than cold air, and it's
relative
> (not absolute) humidity we are concerned about.  I HATE putting stuff in,
> or under, pianos - heaters, water buckets, wicks, etc.  But then there are
> times when it is the lesser of the evils.  I much prefer controlling the
> piano's environment.
>
> But then, Don makes a good point too.  Vapor barriers in walls aren't the
> last word either, and condensation inside the walls can be a big problem.
> Moisture just goes right through a wall if there is no barrier.  But if
> there is a barrier in the wall, it and the insulation must be done just
> right, or else the moisture will condense inside the wall and cause rot
and
> mold.
>
> Your data logger is to be believed over your client's windows that
"sweat".
>  What his windoes do depends not only upon what the inside relative
> humidity is, but upon what the outside temperature is, what type windows
he
> has, and what temperature the inside surface of the glass is - vs - the
> temperature of the inside air.  He probably has the right idea, but the
> wrong answer.
>
> I think Don is right.  As much as I hate to put foreign objects into or
> under pianos, this might be a case where your client needs a complete
> system installed in his piano.
>
> Jim Ellis
>
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