Hi, I am after some advice, moved into new home the weekend, went up into the loft yesterday to check it out and found it has vermiculite insualtion, I would like to board it just for storing and things like that. Is it best if a) remove all vermiculite (how would i do this ?) and replace with rock wool then board it b) place rock wool on top of the vemiculite and board it. C) Leave it and board it, I have never seen this stuff before and was a bot worried about it, has anyone got any suggestions please or advice !