We were told we must empty our loft & remove the flooring. They delivery and put down the insulation. However we would then be unable to put our stuff back. In other words we do all the work. Whatever they did for a survey it was not, it was just an excuse to sell. They also asked to see utilities bills, which rings of potenial for identity theft. So IHaveNoOriginalName it would help us all, if you follow the advise of DragonCat.