I don't know if open cell preceded closed, I do know that closed cell was
available in 1997 and that open cell is as previously mentioned, a sponge
and useless for backer rod. And cause I've been there myself, sometimes you
gotta try to salvage or litigate sh*t.

Try calling Steve Raleigh @ Sonneborne +1 (917) 747-2907.

Eric Hammarberg
Associate Director of Preservation
Associate
LZA Technology
641 Avenue of the Americas
New York, NY 10011-2014
Telephone: 917.661.8176 (Direct)
Mobile: 917.439.3537
Fax: 917.661.8177 (Direct)
email:  [log in to unmask]


-----Original Message-----
From: Ralph Walter [mailto:[log in to unmask]]
Sent: Sunday, June 09, 2002 8:00 PM
To: [log in to unmask]
Subject: Re: Backer rod inquiry


Alright, I have another urgent technical question for everybody to ignore:

I am investigating leakage into an EIFS-clad building, constructed in 1997
in
the Northeast.  A key problem appears to be the use of what has been called
(by a source I consider highly reliable) open cell backer rod at the sealant
joints.

Can anybody direct me to (or give me anecdotal) info on backer rod,
specifically the difference between open and closed cell (it appears to me
that open cell looks like foam rubber and/or a sponge; whereas closed cell
looks like carpet padding); how long has closed cell been available (did
open
cell in fact precede closed?); are there legitimate uses for open cell or is
it all useless shit at this point (and if so, since when?).

Thanks ever so much.

Love and kisses,

Ralph

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To terminate puerile preservation prattling among pals and the
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