Anyone run into Zonolite yet. I was doing some demo last year and found these empty bags of Zonolite in the attic and started doing some reading on it. Bad Stuff. It was sold from the 1920's to 1990 and I think I read that 30 million homes might have it. Turns out it has a high concentration of asbestos which becomes airborn easily. A little tap on the ceiling joist sends up a cloud. The best I could come up with is that the govt. is having a hard time releasing info on it because people would freak out. It was sold as more of a filler type poured in bag insulation and the advertisment shows it being poured around batts. (The guy in the picture pouring it was not wearing a mask). It is generally pink to brown about 3/8 to 1/2 in. and they say it is accordian shaped. Mine, however, was not accordian shaped. If your sending your fellows into the old attics you might want to check this out if you don't allready know about it. I talked to some demo and disposal people in my area and nobody had heard of it but I believe it could become an issue in the future. I'm not afraid of much of the stuff I run into in the old houses but mold and Zonolite are tops on my list to stay away from. RT