A method of forming a glass fiber product, said method comprising: forming a wetted mixture including filiform glass fibers and a first portion of a fire-retarding solution, the wetted mixture having a solids content of the fire-retarding solution substantially uniformly and thoroughly dispersed therethrough, such that the fire retarding solution substantially coats each of the filiform glass fibers, the fire-retarding solution comprising one of a phosphorus compound, a chlorine compound, a fluorine compound, an antimony compound, a halogen compound, an inorganic hydrate, a bromine compound, magnesium hydroxide, hydromagnesite, antimony trioxide, a phosphonium salt, ammonium phosphate, diammonium phosphate, methyl bromide, methyl iodide, bromochlorodifluoromethane, dibromotetrafluoroethane, dibromodifluoromethane, carbon tetrachloride, urea-potassium bicarbonate, and combinations thereof; de-liquefying the wetted mixture to form the dry melt-resistant filiform glass fibers; adding a thickening agent to a second portion of the fire-retarding solution to form a first mixture, the thickening agent comprising guar gum or cornstarch; adding a hardening agent to the first mixture to form a second mixture, the hardening agent being characterized as a liquid product that remains in liquid form when contained, but hardens upon exposure to the atmosphere or environment; adding the dry melt-resistant filiform glass fibers to the second mixture to form a paste mixture; and varying an average length of the dry melt-resistant filiform glass fibers so as to vary a magnitude of viscosity of the paste mixture, the magnitude of viscosity of the paste mixture being directly proportional to the average fiber length. forming a wetted mixture including filiform glass fibers and a first portion of a fire-retarding solution, the wetted mixture having a solids content of the fire-retarding solution substantially uniformly and thoroughly dispersed therethrough, such that the fire retarding solution substantially coats each of the filiform glass fibers, the fire-retarding solution comprising one of a phosphorus compound, a chlorine compound, a fluorine compound, an antimony compound, a halogen compound, an inorganic hydrate, a bromine compound, magnesium hydroxide, hydromagnesite, antimony trioxide, a phosphonium salt, ammonium phosphate, diammonium phosphate, methyl bromide, methyl iodide, bromochlorodifluoromethane, dibromotetrafluoroethane, dibromodifluoromethane, carbon tetrachloride, urea-potassium bicarbonate, and combinations thereof; de-liquefying the wetted mixture to form the dry melt-resistant filiform glass fibers; adding a thickening agent to a second portion of the fire-retarding solution to form a first mixture, the thickening agent comprising guar gum or cornstarch; adding a hardening agent to the first mixture to form a second mixture, the hardening agent being characterized as a liquid product that remains in liquid form when contained, but hardens upon exposure to the atmosphere or environment; adding the dry melt-resistant filiform glass fibers to the second mixture to form a paste mixture; and varying an average length of the dry melt-resistant filiform glass fibers so as to vary a magnitude of viscosity of the paste mixture, the magnitude of viscosity of the paste mixture being directly proportional to the average fiber length.