an insulation panel includes a first surface , a second surface opposite the first surface , a first side , a second side , a third side opposite the first side , and a fourth side opposite the second side . the first , second , third , and fourth sides define a perimeter of the panel . the insulation panel also includes a first conduit and a second conduit internal with respect to the first and second surfaces and extending between the first and third sides . the insulation panel further includes a third conduit and a fourth conduit internal with respect to the first and second surfaces and extending between the second and fourth sides . the conduits remove moisture that accumulates underneath the panel . moreover , the insulation panel includes a slit extending from the perimeter to the first , second , third , and fourth conduits for discharging water accumulated within the insulation panel .