The present invention discloses a beam cap incorporated into a patio extrusion assembly and which includes an elongated body exhibiting, in cross section, a width extending middle portion terminating at opposite ends in engaging tabs. The body is affixed to an exposed profile associated with a component of the extrusion assembly. Additional features include the middle portion exhibiting an arcuate configuration, with the engaging tabs further including a first pair of inner tabs each exhibiting an outwardly angled detent deflected and reseated in a resistive snap-fit fashion with aligning end channels associated with the exposed profile. The engaging tabs further include a second pair of outer tabs within which the end channels seat. Other features include the beam cap exhibiting a specified shape and size and being constructed of an extruded aluminum or least one of vinyl or PVC.