A composite floor comprises a coextrusion layer compression moulded using a coextrusion process. The layer comprises a first stone-plastic layer, a stone-plastic foaming layer, and a second stone-plastic layer sequentially arranged from top to bottom. The stone-plastic foaming layer is used as the main material layer, which reduces a whole weight of the floor; and the first stone-plastic layer and the second stone-plastic layer are arranged at two sides of the stone-plastic foaming layer, respectively, so that the composite floor is more stable. It is more environmentally friendly and simple in manufacturing to use the coextrusion process for compression moulding by avoiding bonding using glue. Use of the coextrusion process makes various layers bond more compact, with little delamination and warpage due to effect of environmental changes. The composite floor has a low expansion rate and shrinkage rate, excellent in performance and long in service life.

A panel comprises a non-deformable first woven fabric and a non-deformable second woven fabric, and a linking structure comprising stays linking the first woven fabric to the second woven fabric, each stay having an at-rest length that is substantially equal to the mean of the at-rest lengths of the stays, the panel comprising a cement-based foam.

A construction board comprising a foam body having first and second planar surfaces, said foam body including a polyisocyanurate foam matrix defining a plurality of closed cells, said closed cells being at least substantially devoid of hydrocarbon blowing agents, and said foam body being characterized by a density, pursuant to ASTM C303, of at least 2.5 lbs/ft.sup.3; and a facer disposed on a planar surface of said foam body, said facer including a glass substrate having an internal planar surface proximate to said foam body and an external planar surface opposite said foam body, a first coating disposed on said external surface, and a second coating disposed on or proximate to said internal surface, where said first coating disposed on said external surface includes an inert filler, and where said second coating disposed on or proximate to said internal surface includes intumescent material.

A thermoplastic roofing membrane comprising a planar-shaped thermoplastic body, said planar body having opposed first and second external planar surfaces, where said first surface includes an ethylene-based olefinic block copolymer and a fatty acid amide, where the amount of fatty acid amide provides the surface with a coefficient of friction (ASTM D 1894) of less than 0.250.

In a floor panel (10) including a foamed cement board (1) having at least a foamed cement layer (3), a top plate (5a) attached to an upper surface of the foamed cement board (1), and a bottom plate (5b) attached to a lower surface of the foamed cement board (1). The foamed cement layer (3) is configured so that the layer (3) has a porous hardened cement phase and a fiber dispersed in the phase. Also, the layer (3) has a thickness within a range from 12 to 30 mm and a specific gravity within a range from 0.8 to 1.5. Thereby, the floor panel can be light in weight while desired strengths for the floor panel are established. The floor panel can be readily produced without any complicated processes.

Methods for making a gypsum board provided with a latex polymer coating layer having a sufficiently low glass transition temperature, a less dense gypsum core layer, and a relatively denser layer of gypsum between the less dense gypsum core layer and the latex polymer coating layer and a gypsum board made by the method.

An insulation panel comprising an outer shell formed of thermoplastic material and an inner space inside the outer shell, wherein the inner space is at least partially filled with a foamed inorganic material comprising at least one mineral binder and optionally at least one synthetic organic polymer, wherein the foamed inorganic material has a density of not more than 500 g/l. The invention is also directed to a method for producing an insulation panel.

Methods for making a gypsum board provided with a latex polymer coating layer having a sufficiently low glass transition temperature, a less dense gypsum core layer, and a relatively denser layer of gypsum between the less dense gypsum core layer and the latex polymer coating layer and a gypsum board made by the method.

Disclosed is a foam modifier, e.g., useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C.sub.6-C.sub.16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.

Disclosed is an improved facer mat for use as a cover sheet for gypsum board. Also disclosed are gypsum boards containing such mat facers on one or both major surfaces of the board (face and back sides when installed), a method of manufacturing such board, and a method of making the mat. The mat can comprise glass, thermoplastic, and/or thermoset fiber. In preferred embodiments, binder is included with the fiber. The mat has outer and inner surfaces. The mat comprises a first region adjacent to the outer surface defined along a horizontal plane of the mat, the first region having a first substantial thickness, and a second region adjacent to the inner surface defined along a horizontal plane of the mat, the second region having a second substantial thickness. The first region has (a) more hydrophilicity than the second region, (b) more wettability than the second region, and/or (c) less density than the second region.