In a message dated 12/9/05 12:55:52 PM Eastern Standard Time, [log in to unmask] writes: every one of those terraces and flat roofs, without exception, will leak Ralph: Now, now. Not every architect designs like Frank Gehry. Steve Stokowski Stone Products Consultants Building Products Microscopy 10 Clark St., Ste. A Ashland, Mass. 01721-2145 508-881-6364 (ph. & fax) http://members.aol.com/crushstone/petro.htm