DC Query/a possible solution

[Richard Brekne]

Hi Bob... thanks for the reply, and thanks to the others who supplied such
interesting info. I was wondering just how you configure the mylar underneath the
grand since you say it does not cover the entire underside. Just where do you
allow for openings. And, since there must be openings as you say, could not these
be such that the mylar (or what ever is used, can be left open at the spot where
the dehumdifier is so that it can be serviced without removal of the enclosing
material ? How about the humidistat and the dehumidifyer.

I was thinking about trying a thin textile instead of plastic,  secured by velcro
for easy removal and re-placement. I am handy with a sewing machine so it wouldnt
be a big problem to make such a thing. My thinking was that a relatively thin
layer of of linen or the like would be just enough enclosure to stabilize the
system, while being able to let the sound breath though easily enough. Comments
??

RptBob1@AOL.COM wrote:

> In a message dated 3/6/00 12:53:38 AM Eastern Standard Time,
> KENNETH.GERLER@prodigy.net writes:
>
> << particular
>  > level tho as the hygrometers just show the present, high, and low levels
>  > each time I check them.
>  >
>  > The guy who runs the import of these in Norway suggests that I cover the
>  > bottom of the grand with a thin plastic film, enclosing thus the whole
>  > system and underside of the gr >>
> Richard:
>
> I have installed sheets of mylar (available from Damppchaser) under several
> Grands to ward off heavy air movement towards a cold-air return next to these
> pianos.  The installation does not cover 100% of the bottom of the Grand
> since there has to be room around the De-humidifier for it to work properly.
> This is, therefore, not an "airtight" installation and the piano area under
> the soundboard does not suffer from excessive moisture buildup.  I have
> noticed no adverse effects from this installation technique and it
> immediately brought me the results I was shooting for: the system was now
> working very well without interference from air blowing across the piano
> bottom. Incidentally, I used large headed tacks (like the ones furnished by
> DC for new installations).  There is the inconvenience of having to remove
> the mylar each time you clean the Humidifier tank.
>
> Bob Bergantino,RPT
> Willoughby Hills, Ohio

--
Richard Brekne
Associate PTG, N.P.T.F.
Bergen, Norway