For the health controversy on Zonolite, click here. Vermiculite produced after 1990 has no asbestos in it. Because of the bad reputation it got with Zonolite it is not generally sold as insulation, although it is an excellent insulation with good fire resistance and easy pourability. You can fi...
Note 2014 :
As you read below you will find a detailed history of Vermiculite insulation and problems it had starting in 1920. Just recently I have become aware of houses built around or before 1920, yes 100 year old houses, where it was discovered that there was about 2 inches of Vermiculite u...
