How Do I Repair Cracks in the Drywall Seams?. Part of the series: Drywall Repair & Maintenance. The seam is the point at which two drywall boards meet. Repair cracks in the drywall seams with help from a construction professional with over 25 years of experience in this free video clip. Read more: http://www.ehow.com/video_12239376_re...