Was looking into info on contact cement and came across info on adhesives. Started out simple, describing different adhesives and their uses, then I looked deeper. A bit deeper than I really need. http://www.adhesives.org/adhesives-sealants/science-of-adhesion/wetting On this page, I found this tid bit, a bit interesting. I know glass is considered a liquid, but never saw an example like this. ......this demonstrates that some day, the glass tiles in your shower will eventually go down the drain.