Completing the Butt Joint where 2 of the Preformed Curved Drywall Panels come together is simple. In addition to fastening the panels to a stud, every 16", use some simple blocking to support the middle of the curve. Use a block a minimum of 6" Wide to straddle the span and insert a screw through each panel into the blocking. The block can be free floating and it is not necessary to tie back to the wall or ceiling framing. Install sufficient blocking to allow a fastener every 4" through the curve area. The seam can then be taped and finished.