A method of forming a fire resistant cellulose fiber-based board product, said method comprising: processing cellulose fibers into a deconstructed fiber mixture; forming a wetted mixture from the deconstructed fiber mixture and a fire-retarding solution by substantially saturating the deconstructed fiber mixture with the fire-retarding solution, the fire-retarding solution having a first concentration of a solids content, including manipulating the wetted mixture such that the solids content of the fire-retarding solution is substantially uniformly and thoroughly dispersed therethrough, and maintaining the wetted mixture for at least a predetermined time, so as to allow the fire-retarding solution to be at least partially absorbed by the cellulose fibers in the deconstructed fiber mixture; de-liquefying the wetted mixture to form a dry fire-retarding deconstructed fiber mixture having a moisture content of between 0% and about 3%; forming a cohesive mixture from a binding agent and the dry fire-retarding deconstructed fiber mixture; forming the cohesive mixture into a formed cellulose product by compressing the cohesive mixture to form a densified cellulose product; evaluating an internal bond strength of the formed cellulose product using a tensile strength testing device; comparing the evaluated internal bond strength to an acceptable internal bond strength for the formed cellulose product; and increasing an amount of the binding agent used to form the cohesive mixture, if the evaluated internal bond strength is less than the acceptable internal bond strength; or diluting the fire-retarding solution used to form the wetted mixture such that the fire-retarding solution includes a second concentration of the solids content, the second concentration being less than the first concentration of the solids content, if the evaluated internal bond strength is less than the acceptable internal bond strength. processing cellulose fibers into a deconstructed fiber mixture; forming a wetted mixture from the deconstructed fiber mixture and a fire-retarding solution by substantially saturating the deconstructed fiber mixture with the fire-retarding solution, the fire-retarding solution having a first concentration of a solids content, including manipulating the wetted mixture such that the solids content of the fire-retarding solution is substantially uniformly and thoroughly dispersed therethrough, and maintaining the wetted mixture for at least a predetermined time, so as to allow the fire-retarding solution to be at least partially absorbed by the cellulose fibers in the deconstructed fiber mixture; de-liquefying the wetted mixture to form a dry fire-retarding deconstructed fiber mixture having a moisture content of between 0% and about 3%; forming a cohesive mixture from a binding agent and the dry fire-retarding deconstructed fiber mixture; forming the cohesive mixture into a formed cellulose product by compressing the cohesive mixture to form a densified cellulose product; evaluating an internal bond strength of the formed cellulose product using a tensile strength testing device; comparing the evaluated internal bond strength to an acceptable internal bond strength for the formed cellulose product; and increasing an amount of the binding agent used to form the cohesive mixture, if the evaluated internal bond strength is less than the acceptable internal bond strength; or diluting the fire-retarding solution used to form the wetted mixture such that the fire-retarding solution includes a second concentration of the solids content, the second concentration being less than the first concentration of the solids content, if the evaluated internal bond strength is less than the acceptable internal bond strength.