Is it blueboard or taped drywall?

Taped drywall with a smooth Level 4 finish on this wall.

IMO, it's a hack job. You should not have the drywall end at the window opening, it should at least go 6 - 8" into the opening. The upper doesn't look bad - but the lower one does.

I'm with your drywaller. Those seams aren't going anywhere.

Technically, you are right; the drywall manufacturers prohibit butt joints as done here, but since the joints will probably be covered in casing, I'm not seeing a problem if they fail.

Here is a link that might be useful: Joints

Technically, you are right; the drywall manufacturers prohibit butt joints as done here, but since the joints will probably be covered in casing, I'm not seeing a problem if they fail.

Here is a link that might be useful: Joints

If we use three inch wide casing four inches of drywall will still be exposed. This is a presentation window and cracks at the corners of the window are unacceptable to me.

We had a lot of serious issues in our home due to ghetto construction by the original builder 30 years ago and subsequent contractors. I spent the better part of the last year reframing and planning the walls to make them plumb and flat and used 18 gauge metal studs to level and flatten the ceiling. I made it clear I wanted full sheets used along with a Level 5 smooth finish. We paid 4,000.00 for this work.

Looks like my wife and I will have to rent a truck to pick up two sheets of 5/8â 54â wide drywall and redo the wall. I will ask that their tape & finish person completes the work. He has to come back anyway since he forgot to sand many areas.

If you specified that you wanted full sheets and a Level 5 smooth finish, and those specs are what the $4000 is based on, then that's what you should have gotten.

You should not be renting a truck, picking up drywall and installing it. Have the contractor do it.