80....... 4ft -300 lb cast stones 24inches across ...nice big stuff architect wants it to go down in mud on a flat parapet brick wall on a historic building I said fine He then said he wants them anchored I said they were never anchored as they worked in compression He said anchor them I said fine He said to lay the stones down in mortar ;but meanwhile he has the roofer to lay down plastic -fire and ice sheild flashing- all the way tru and across the setting substrate , anchor I can do ...... . ......but the -fire and ice sheild - I don't feel so fine about in a bed of mortar why mud it ? when I am going to have a cold joint ? Yes It needs a bed ,and yes it needs to adhere but mortar and sand aren't going to do much on a plastic substrate signed stucco by Py ************************************** Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop00030000000001) -- 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>