Sto does. Perm "rate" is important! You need to decide, how permeable?


Eric Hammarberg
Director of Preservation
Sr. Associate
LZA Technology
641 Avenue of the Americas
New York, NY 10011-2014
Telephone: 917.661.8160 (Direct)
Mobile: 917.439.3537
Fax: 917.661.8161 (Direct)
email:  [log in to unmask]



-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Thursday, April 08, 2004 2:33 PM
To: [log in to unmask]
Subject: [BP] RFI re: availability of vapor-permeable sheet membrane


Anybody know of (and/or used) a vapor-permeable sheet membrane that would be
suitable for use in waterproofing backup masonry, which would keep rain out
and allow indoor moisture to migrate outwards and into a cavity wall?

I am told that Henry makes a schmear-on product (which covers all of 18.6
SF/gallon!!!) which claims to do the job, but I would much prefer to rely on
a manufacturer's sheet product to form a continuous surface than on some
laborer with a brush load of this...tar.

Thanks.

Ralph


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