I am designing an academic fab (we are moving to a new building). I am following the basic design of our present facility ... painted gypsum board (dry wall) walls, modular HEPAs in a T bar ceiling, and softwalls for air return (It's inexpensive and works: ours is class 100). However, I have a few questions: 1) What should the temperature and humidity control be in the lithography (Temp and delta T --- RH and delta RH) ? 2) What type of epoxy paint should I specify for the walls ? Any recommended suppliers ? 3)Any suggestions on the flooring ? We presently have 1' square vinyl tiles. I have seen references to rolled vinyl. Is there any recommened suppliers or types to look out for. Any help is appreciated. Ken Westra MicroFab at the University of Alberta PS Thanks to all the people in this mailing list who have answered my questions over the past year. They have been very useful.