it could be DS2 "challenging" DS1 as he enters his adolescent years
this I feel is the reason things have escalated. ds2 has become quite bolshy since he started senior school. he attends a grammar school and appears to love it, and he thrives on working hard and playing hard (actively enjoys rugby, lacrosse and hockey, but rugby is his first love he plays 3-4 times a week for school and a team), but I think the pressure already is sometimes a bit hard on him, also he has become a lot more challenging and far too ready with the back chat. I have had several harsh words with him about the way he speaks to me, and his family and that it wont be accepted. Nothing has changed in the rules that means that he can be argumentative and sullen without consequence.
separate rooms isn't an option as the only rooms separate downstairs are the lounge and the conservatory. the dining room, study/playroom and kitchen are all open plan through arches and not separated and you need to walk through the lounge to get elsewhere. the conservatory is freezing s no heating in there. I did say that if ds1 wanted to live at his dads, he could and would be welcome with me anytime. I thought he might want that as xh lives much closer to the college ds1 attends, but ds1 said no. xh and I have an amicable relationship, we don't argue or bicker and there is no one-upmanship competing for the childrens love etc.
I have noticed the physical changes in ds2 in the last few months as well, such as yet another growth spurt, hair under the arms and his top lip, became a bit smelly, so anti per spirant became better acquainted with.
I never got on with my sister who I used to share a room with, so I do understand the frustration at sharing a room and especially when personalities are so different. Ds1 is a total slob and will happily lie there in unmade bed, surrounded by sweet wrappers, crisp packets and trainers strewn around the room along with last weeks pants and socks, whereas ds2 has a bit more pride and likes things to be tidy. I do make ds1 tidy up daily and put washing in wash basket etc.
the mould thing is because, when we first moved in to this house, my mattress was on the floor, waiting delivery of new bed frame and I was told to be careful that it would go mouldy due to the non circulation of air and the mattress getting damp from sweat during sleep etc is this not true then?