oh my gosh that is exactly the same thing my mums house is double brick and you can hear him in the kitchen from upstairs its bad and his been like this for bout 2 yrs now he needs this oxygen thing to help him breath at night due to he is also over weight and apparently it helps him stop... but its expensive and his also stubborn!!

maybe record him while his asleep and show him in the morning or maybe result to show him how bad it is and tell him he has to sleep in a seperate room till he fixes it thats what my mum did and still does lol
Have recorded his snoring before and EVERYONE tells him about it, it's getting worse, especially after soem drinks, 1 of his mates stayed at MIL's after they had been out for the night, he got up and caught a taxi home cos DP was so loud...
He just wont listen, we don't have a spare bed (it's at our old house for now) and ho be honest i'm used to it now, it's only a PITA to me when i get up to the girls and then have to try and go to sleep with him already snoring.