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 includes a gypsum layer having a gypsum layer inner surface and a gypsum layer outer surface, a first sound damping layer disposed at the gypsum layer inner surface and having a first sound damping layer inner surface opposite the gypsum layer inner surface, a first encasing layer disposed at the gypsum layer outer surface, a second encasing layer disposed at the first sound damping layer inner surface, and a second sound damping layer disposed at the second encasing layer opposite the first sound damping layer inner surface.

A sheathing panel includes a barrier overlay secured to a panel; wherein the sheathing panel is bulk water resistant and has at least one of the following properties: a water vapor transmission rate of at least 7.0 grams per square meter per 24 hours (grams/m.sup.2/24 hours) as determined by ASTM E96-15 procedure A at 73° F. and 50% relative humidity (RH), a water vapor permeance of at least 1.3 perms as determined by ASTM E96-15 procedure A at 73° F. and 50% relative humidity (RH), or an air infiltration rate of less than 0.2 liters per second per square meter (L/s-m.sup.2) at 75 pascals (Pa) as determined by ASTM E2357-11.

A method to produce a veneer element, including defects and dense portions. The method includes providing a substrate, providing a sub-layer, including a binder and coloured filler particles, applying the sub-layer on a first surface of the substrate, applying a veneer layer on the sub-layer, and applying pressure, preferably heat and pressure, to the veneer layer and/or the substrate, thereby forming a veneer element wherein, after pressing, the sub-layer is visible through a defect of the veneer element such as crack, cavity, hole and/or knot of the veneer layer. Also, a veneer element.

The present disclosure relates to a method to produce a coating layer, including applying a coating composition on a surface of a carrier, curing the coating composition to a coating layer, and subsequently applying pressure to the coating layer. The disclosure further relates to a method to produce a building panel, and such a building panel, and to a method to produce a coated foil, and such a coated foil.

Gypsum panels and methods of making the same are provided. A method of making a gypsum panel includes forming a first gypsum slurry by combining stucco, water, a siliconate, and a phosphate salt or polymer, and setting the first gypsum slurry to form at least part of a core of the gypsum panel, wherein the gypsum panel displays a 2-hour water absorption test weight increase of at least 10 weight percent less than an otherwise identical comparative panel containing no phosphate salt or polymer in its core.

Gypsum panels and methods of making the same are provided. A method of making a gypsum panel includes forming a first gypsum slurry by combining stucco, water, a siliconate, and a phosphate salt or polymer, and setting the first gypsum slurry to form at least part of a core of the gypsum panel, wherein the gypsum panel displays a 2-hour water absorption test weight increase of at least 10 weight percent less than an otherwise identical comparative panel containing no phosphate salt or polymer in its core.

A method to produce a veneer element, including defects and dense portions. The method includes providing a substrate, providing a sub-layer, including a binder and colored filler particles, applying the sub-layer on a first surface of the substrate, applying a veneer layer on the sub-layer, and applying pressure, preferably heat and pressure, to the veneer layer and/or the substrate, thereby forming a veneer element wherein, after pressing, the sub-layer is visible through a defect of the veneer element such as crack, cavity, hole and/or knot of the veneer layer. Also, a veneer element.

A penetration part fireproof covering material used when a penetration part covered for fireproof is formed in a fireproof beam that is a fireproof constructional member that constitutes a wooden building, wherein the penetration part fireproof covering material is formed to have a tubular shape by stacking a plurality of gypsum board pieces (13a) formed from gypsum boards in a thickness direction and unitarily connecting the plurality of gypsum board pieces. The penetration part fireproof covering material is formed to have the tubular shape by stacking the plurality of gypsum board pieces that preferably have an annular shape and are cut out from commercially available gypsum boards having thicknesses of 9.5 mm to 25.5 mm while fixing the plurality of gypsum board pieces to each other preferably using metal fasteners such as staples, and unitarily connecting the plurality of gypsum board pieces.

A floor, wall or ceiling panel comprises a core and a decorative top layer provided on the core. The core comprises a magnesium oxide-based board material, and wherein the aforementioned panel, on at least two opposite edges, is provided with coupling means allowing that two of such panels can be interlocked at the respective edges.

An example plasterboard includes a layer of hardened plaster having a first surface and an opposed second surface, a layer of polymer material having particles of one or more cementitiously-active substances mixed therein, and a liner between the first surface of the layer of hardened plaster and the layer of polymer material. Another example is a method of forming such a plasterboard. The method includes loading an extruder with the polymer material having the particles of one or more cementitiously active substances mixed therein, extruding the polymer material through a die to form the layer of polymer material on a surface of the liner, contacting with a layer of wet plaster material, the liner having the polymer material applied thereon such that the surface of the liner faces away from the wet plaster material, and drying the layer of wet plaster material to form the layer of hardened plaster.