Abstract: An elongated integral truss brace to operatively engage opposite end portions of each of a plurality of lower truss tie bars of a corresponding plurality of roof trusses to retain the plurality of lower truss tie bars and corresponding roof trusses in space relationship relative to each other to reinforce the roof truss system formed by the plurality of roof trusses, the elongated integral truss brace comprising a pair of substantially parallel lower interrupted side panels held in fixed spaced relationship relative to each other by an upper elongated interconnecting member to cooperatively form a stiffener channel therebetween to receive and retain a plurality of rigid brace stiffeners therein and forming a tie bar slot between adjacent rigid brace stiffeners to receive end portions of the lower truss tie bars.