Hi I really need some advice please?, I am having my late Mums house done up,(three bed semi) the builder removed the downstairs structural wall between kitchen and dining room as agreed, we talked about the possibility of removing the same wall upstairs between box room and double room but i wanted to see building calculations first. Popped into the house today and he has removed the wall upstairs! he has messaged me saying that there are no calcs needed as it has nothing to support. I am rather worried that there is nothing supporting the roof apart from the outside walls. Should I be worried? This last year has been horrendous in so many ways for my family (as it has been for so many) so any advice to either put my mind at rest or to help stop making a bad situation worse would be so very much apricated!