We don't have much money, but at least we 'have a roof over our heads'. [=at least we have somewhere to live]
You'll do what I say as long as you're living 'under my roof'. [=as long as you are living in my house]
We hope to have sales and service 'under one roof' [=at the same location] in the near future.
(..) Let's go! Work! And that's how it came to pass... ...that on the second-to-last day of the job... ...the convict crew that tarred the factory roof in the spring of '... ...wound up sitting in a row at in the morning... ...drinking icy-cold beer, courtesy of the hardest screw... (..)1994 The Shawshank Redemption
(..) if things had gone on that way... ...this place would have got the best of him. But then, in the spring of ... ...the powers that be decided: The roof of the license-plate factory needs resurfacing. I need a dozen volunteers for a week's work. As you know... ...special detail carries with it (..)1994 The Shawshank Redemption