Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A sound damping wallboard for installation on an installed wallboard, a sound damping wallboard system, and a method of constructing a sound damping wallboard on a building structure are disclosed. The sound damping wallboard comprises a gypsum layer having a gypsum layer inner surface and a gypsum layer outer surface, a sound damping layer disposed at the gypsum layer inner surface for installation between the gypsum layer and an installed wallboard and having a sound damping layer inner surface, a first encasing layer disposed at the gypsum layer outer surface, and a second encasing layer disposed at the sound damping layer inner surface.

Abstract: A sound damping wallboard for installation on an installed wallboard, a sound damping wallboard system, and a method of constructing a sound damping wallboard on a building structure are disclosed. The sound damping wallboard comprises a gypsum layer having a gypsum layer inner surface and a gypsum layer outer surface, a sound damping layer disposed at the gypsum layer inner surface for installation between the gypsum layer and an installed wallboard and having a sound damping layer inner surface, a first encasing layer disposed at the gypsum layer outer surface, and a second encasing layer disposed at the sound damping layer inner surface.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard includes a gypsum layer having a first side with a first gypsum surface, a first encasing layer at least partially covering the first gypsum surface to form a first encasing layer portion, and a sound damping layer on the first side covering at least part of the first encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard includes a gypsum layer having a first side with a first gypsum surface, a first encasing layer at least partially covering the first gypsum surface to form a first encasing layer portion, and a sound damping layer on the first side covering at least part of the first encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard includes a gypsum layer having a first side with a first gypsum surface, a first encasing layer at least partially covering the first gypsum surface to form a first encasing layer portion, and a sound damping layer on the first side covering at least part of the first encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard includes a gypsum layer having a first side with a first gypsum surface, a first encasing layer at least partially covering the first gypsum surface to form a first encasing layer portion, and a sound damping layer on the first side covering at least part of the first encasing layer portion.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A sound damping wallboard for installation on an installed wallboard, a sound damping wallboard system, and a method of constructing a sound damping wallboard on a building structure are disclosed. The sound damping wallboard comprises a gypsum layer having a gypsum layer inner surface and a gypsum layer outer surface, a sound damping layer disposed at the gypsum layer inner surface for installation between the gypsum layer and an installed wallboard and having a sound damping layer inner surface, a first encasing layer disposed at the gypsum layer outer surface, and a second encasing layer disposed at the sound damping layer inner surface.

Abstract: A sound damping wallboard and methods of forming a sound damping wallboard are disclosed. The sound damping wallboard comprises a gypsum layer with a gypsum surface having an encasing layer. The encasing layer is partially removed to expose the gypsum surface and form a gypsum surface portion and a first encasing layer portion on the gypsum layer. A sound damping layer is applied to the gypsum layer to cover at least part of the gypsum surface portion and the encasing layer portion.

Abstract: A method of preparation and use of lightweight, high-strength gypsum wallboard, as well as a core composition suitable for use therein, are disclosed. The core composition includes a slurry of calcium sulfate hemihydrate (stucco), water, acid-modified starch, and a starch cross-linking agent, having a pH of about 9 to about 11. The composition and method provide a wallboard having a lower density than conventional wallboard, and with equivalent or better strength characteristics than conventional wallboard.

Abstract: A wallboard and stud unit formed of an elongate strip of foldable steel affixed to the wallboard back face, adapted to be folded outwardly away from the wallboard to function as a wall stud, in a hollow wall having a plurality of such units in back-to-back relationship.

Abstract: A secondary vertical stud or furniture channel for mounting against one side of a plurality of vertically spaced upwardly opening horizontal channels in a hollow partition wall framework, with slots in the secondary stud for engaging the upwardly extending flanges of the horizontal channels. The secondary studs are able to be freely located at any position along the length of the wall, for supporting wall furniture where desired, for locating a perpendicularly extending second partition wall wherever desired, or for receiving fasteners or adding stability to the wall framework wherever desired, by very simple installation procedures.