Ceiling or wall panel as well as methods for covering a ceiling or wall portion

Ceiling or wall panel as well as methods for covering a ceiling or sloping wall portion, wherein the respective panel (1, 1a) having an elongated panel body (A), on whose one longitudinal edge a groove is arranged and opposed to a groove longitudinal edge formed a spring is. Hereby, the panel body (A) with at least one further identical panel body (B) to form a tongue and groove coupled. In the region of the groove and the spring are arranged together engageable latching means by which the panel body (A, B) are fixed to each other in the coupled state. According to the invention the latching means in the coupled state of the panel bodies (A, B) are spaced apart and form a parting plane therebetween from. By pivoting at least one of the coupled panel bodies (A, B) around the longitudinal direction (X) of the tongue and groove are around the latching means can be brought at least partially engaged.