Quote: So I've stayed away for the most part. We pass each other once or twice a day, and he comes home after I've gone to bed.
For a guy who clearly has quality time as one of his love languages, I'm betting that this is the wrong approach.
Your guy (like mine) craves quality time so much that he'd prefer to have you sit there and watch him remodel. So I'm betting you concentrating on your work all the time and going to bed before he gets home is leaving him feeling pretty lonely and unloved.
Not that I blame you, and I totally understand why HIS lack of meeting your needs is ticking YOU off - but just pointing out that i don't think this approach is likely to get you where you want to go.
Also - remember when he vents about his stress - don't take what he says so literally, even when it sounds like he's blaming you for everything. I bet the self-critical voice in his head is REALLY loud right now, and this is just a tiny bit of it spewing out onto you - imagine what he's getting!