Hear, hear. Edison Coatings, Inc. Michael P. Edison President 3 Northwest Drive Plainville, CT 06062 Phone: (860) 747-2220 or (800)341-6621 Fax: (860)747-2280 Internet: www.edisoncoatings.com www.rosendalecement.net E-Mail: [log in to unmask] ---------- Original Message ----------- From: John Walsh <[log in to unmask]> To: [log in to unmask] Sent: Wed, 8 Apr 2009 18:24:47 -0400 Subject: Re: [BP] Grace's Dry-Block > Just saw this one... > Ilene, this product is designed for concrete masonry units to minimize > moisture absorption. Usually, there is a separate block admixture > that is added at the precast plant and then the contractor is supposed > to add the product you mention to the mortar. We've tested for its > presence but have never done any sort of perm testing. However, given > its intended application I would steer clear away from this one. > > In my opinion, Type N mortar is already dense enough and in some cases > too dense. The glazed surface of the terra cotta may be "impervious" > but the interior is not. I don't think it would be a good idea to > seal the interior masonry on all five sides unless you could guarantee > that no moisture would ever get into the masonry from behind or along cracks....EVER. > > John > > -----Original Message----- > From: The listserv where the buildings do the talking > [mailto:[log in to unmask]] On Behalf Of Ilene R. Tyler > Sent: Wednesday, April 08, 2009 12:35 PM > To: [log in to unmask] > Subject: [BP] Grace's Dry-Block > > New thread: does anyone know this product - Grace's Dry-Block II > Mortar Admixture? Can it be used as a mortar additive to Type N mix > for pointing glazed terra cotta to improve water repellency of the mortar? > I'm concerned about trapping moisture in the assembly, and causing more > damage than already occurs with the failed mortar. > > Thought I'd throw it out there for you all to chomp on...many thanks. > > QUINN EVANS | ARCHITECTS > Ilene R. Tyler, FAIA, FAPT, LEED AP > v 734.663.5888 > > -- > To terminate puerile preservation prattling among pals and the > uncoffee-ed, or to change your settings, go to: > <http://listserv.icors.org/archives/bullamanka-pinheads.html> > > *Please vote for ICORS every 24 hours* > <http://www.lsoft.com/news/choicevote.asp> > > -- > To terminate puerile preservation prattling among pals and the > uncoffee-ed, or to change your settings, go to: > <http://listserv.icors.org/archives/bullamanka-pinheads.html> > > *Please vote for ICORS every 24 hours* <http://www.lsoft.com/news/choicevote.asp> ------- End of Original Message ------- -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html> *Please vote for ICORS every 24 hours* <http://www.lsoft.com/news/choicevote.asp>