Do you have one of those greyish brown textured ceilings in a home unit or office area that you feel appears drab and grey? Many home units with concrete slab ceilings had these concrete slab ceilings finished in vermiculite which helped camouflage unevenness in the form work that would have been very obvious had sealing been simply just painted.
It is possible to freshen a vermiculite celling by painting and here are a few tips which may help paint a vermiculite ceiling.