A recessed joint is formed when the long, un-cut edges of 2 drywall sheets are placed together (as shown above). These long edges are pre-formed at the factory to a "lesser thickness" than the rest of the sheet. For example, if you were to measure the factory edge of a piece of 1/2 inch drywall, it would only measure a little over 3/8 inch thick.
Tips on installing drywall #3: The "recess" that is formed provides a higher-strength joint for spanning the distance between framing members, and also allows for easier taping and finishing.
LAMINATE/LAMINATION: Drywall laminating means applying new drywall directly over an existing wall surface (drywall or plaster), as opposed to applying it directly to the original framing members.
FIELD: The "edge area" of each panel is a 6-inch margin around each panel that gets covered with compound during the taping and coating. The "field" area of a drywall panel is the entire remaining area.
JOINT GAP: Theres some controversy on this topic. You may read occasionally that "some" gap is required on drywall butt joints, however this is not a concern as long as the recommended fastener spacing is followed, and the butt joints are formed parallel-to and "directly on top of" the stud.
Tips on installing drywall #4: A joint-gap of zero is very common. Gaps that do occur are not a problem as long as theyre filled with compound in the taping stage. Avoid creating gaps that are over 1/4- inch wide on recessed joints and butt joints because it can affect the strength of the joint.