House in my name but we 'bought it together' 3 years ago although turned out as I was selling my house to buy something with him jointly that he had no deposit and couldn't get a mortgage because of credit card debt 

So, house in my name, mortgage in my name. We have paid half each every month since buying it for 3 years. I put a 40% deposit down and I agreed verbally for him to buy into the remaining 60% half each as we went. If we split up I said I'd freeze his contribution till the house was sold when I want to sell it - it's mine and my kids house.
Annnyway. He drinks to much, is selfish and largely unsupportive, earns upward of 100k a year and I see none of it. All ploughing into himself, his debts, his kids who are non resident and god knows what else. Won't even buy bloody food half the time.
I want him to go I'm sick of it. He is a classic narc.
How do I get him to move out. He is refusing and wants his money. I feel really angry and a bit scared 