FIG. 1 is a front perspective view of one embodiment of the insulating building panel in accordance with my design;

FIG. 2 is a front elevation view of the insulating building panel of FIG. 1;

FIG. 3 is a first side view of the insulating building panel of FIG. 1;

FIG. 4 is a back elevation view of the insulating building panel of FIG. 1;

FIG. 5 is a second side view of the insulating building panel of FIG. 1;

FIG. 6 is a top end view of the insulating building panel of FIG. 1;

FIG. 7 is a bottom end view of the insulating building panel of FIG. 1;

FIG. 8 is a front perspective view of a second embodiment of the insulating building panel in accordance with my design;

FIG. 9 is a front elevation view of the insulating building panel of FIG. 8;

FIG. 10 is a first side view of the insulating building panel of FIG. 8;

FIG. 11 is a back elevation view of the insulating building panel of FIG. 8;

FIG. 12 is a second side view of the insulating building panel of FIG. 8;

FIG. 13 is a top end view of the insulating building panel of FIG. 8;

FIG. 14 is a bottom end view of the insulating building panel of FIG. 8;

FIG. 15 is a front perspective view of a third embodiment of the insulating building panel in accordance with my design;

FIG. 16 is a front elevation view of the insulating building panel of FIG. 15;

FIG. 17 is a first side view of the insulating building panel of FIG. 15;

FIG. 18 is a back elevation view of the insulating building panel of FIG. 15;

FIG. 19 is a second side view of the insulating building panel of FIG. 15;

FIG. 20 is a top end view of the insulating building panel of FIG. 15;

FIG. 21 is a bottom end view of the insulating building panel of FIG. 15;

FIG. 22 is a front perspective view of a fourth embodiment of the insulating building panel in accordance with my design;

FIG. 23 is a front elevation view of the insulating building panel of FIG. 22;

FIG. 24 is a first side view of the insulating building panel of FIG. 22;

FIG. 25 is a back elevation view of the insulating building panel of FIG. 22;

FIG. 26 is a second side view of the insulating building panel of FIG. 22;

FIG. 27 is a top end view of the insulating building panel of FIG. 22; and,

FIG. 28 is a bottom end view of the insulating building panel of FIG. 22.

Wherein the broken lines in FIGS. 1, 2, 4, 22, 23, and 25 are demarcations on the surface of the insulating building panel.