A sound-deadening product for a flooring system with a subfloor may be installed by a single installer. The sound-deadening product has a sound-deadening upper portion with a bottom surface and a subfloor contacting layer affixed to the bottom surface of the sound-deadening upper portion. The subfloor contacting layer may include a film or be a laminate. The laminate may includes a nonwoven sheet and a film. The nonwoven sheet is generally co-extensive with the sound-deadening upper portion. The nonwoven sheet is adhered to the bottom surface of the sound-deadening upper portion. The film is generally co-extensive with the nonwoven sheet. The film is a polymer film with a thickness ≤3 mils. An upper surface of the film is adhered to a bottom surface of the nonwoven sheet, and a bottom surface of the film is in contact with the subflooring. A method for single installer installation of the sound-deadening product is also disclosed.