A temporary holding of wallboard against studs with adhesive therebetween, while the adhesive sets, involving an elongate semirigid rod removably affixed at one end to the stud, the other end projecting out from between the edges of two adjacent wallboards, and a retainer plate engaging the flexible rod and pressing the wallboards against the stud, the engagement of the plate with the rod being such that the rod prevents the plate from moving away from the wallboard until removal is desired.