I gave my husband 3 sons. He gave me crown molding. Installation of crown molding is way more painful than childbirth.
When we built our Pax hack last winter
We have one long run (24') and since crown comes in 16' sections we were going to have a seam no matter what we did. We didn't want to end up with this like we have in our family room (I have no idea why our ceiling looks like the moon...I blame the camera). Ironically that crown molding install was one of the few things we paid the pros to do. If you want something done right...
Visible seams happen when crown molding isn't properly secured to a stud (the nails pull away from the drywall). To ensure we wouldn't have a visable seam here he secured a triangular piece of wood to the studs behind the molding where the seams would meet and then secured the molding to that. Beauty and brains that guy.
He installed on Saturday and I caulked, putty'ed and painted on Sunday. What a difference!
I still have some touch up wall and ceiling painting to do.
We also finally added the trim to the floor. Our entire house is out of square and the floors are all over the place (hence the reason crown molding is so miserable to install). We had stopped noticing this:
While we had the nail gun out the husband stalled a piece of trim along the bottom of the cabinetry to fill most of the gap.
And because I promised I'd put this in writing: I promise to never make my husband install crown molding ever again.