Water infiltration may weaken the bond or cause a failure due to freeze-thaw, especially if the guastivino was used for a porch or other outdoor space. Thinking of The Mother Church in Boston, where I observed this condition. Ilene R. Tyler, FAIA, FAPT, LEED AP Principal and Director of Preservation o 734-663-5888 m 734-417-3730 > On May 11, 2014, at 12:02 PM, Derek Trelstad <[log in to unmask]> wrote: > > -- **Please remember to trim posts, as requested in the Terms of Service** 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>