A method of manufacturing a mineral fibre thermal insulation product comprises the sequential steps of: Forming mineral fibres from a molten mineral mixture; Spraying a substantially formaldehyde free binder solution on to the mineral fibres, the binder solution comprising: a reducing sugar, an acid precursor derivable from an inorganic salt and a source of nitrogen; Collecting the mineral fibres to which the binder solution has been applied to form a batt of mineral fibres; and Curing the batt comprising the mineral fibres and the binder which is in contact with the mineral fibres by passing the batt through a curing oven so as to provide a batt of mineral fibres held together by a substantially water insoluble cured binder.

A method of manufacturing a mineral fibre thermal insulation product comprises the sequential steps of: Forming mineral fibres from a molten mineral mixture; Spraying a substantially formaldehyde free binder solution on to the mineral fibres, the binder solution comprising: a reducing sugar, an acid precursor derivable from an inorganic salt and a source of nitrogen; Collecting the mineral fibres to which the binder solution has been applied to form a batt of mineral fibres; and Curing the batt comprising the mineral fibres and the binder which is in contact with the mineral fibres by passing the batt through a curing oven so as to provide a batt of mineral fibres held together by a substantially water insoluble cured binder.

Described herein is a wall assembly for use in walls of energy efficient residential or commercial buildings which can provide improved thermal resistance, moisture resistance and structural capacity. The wall assembly includes a frame assembly, an outer fiberboard, and a closed cell foam layer. The fiberboard is laminated with a lamination such as a non-perforated, non-woven polyolefin permeable membrane. The closed cell foam layer couples the frame assembly and the outer fiberboard. Also described herein is a method of manufacturing the wall assembly.

A construction board comprising (a) a foam core having a first planar surface and a second planar surface; (b) a facer, having first and second planar surfaces, including an inorganic fabric and a coating; and (c) an interfacial region between the foam core and said facer.

An un-reacted substantially formaldehyde free curable binder solution for binding loose matter consists essentially of a solution obtainable by dissolving a reducing sugar, an ammonium salt acid precursor, optionally a carboxylic acid or a precursor thereof and optionally ammonia in water.

Wall structures and methods of manufacturing wall structures are described in this specification. The wall structures include a frame, a first foam panel attached to the frame, a second foam panel disposed in a cavity defined by the frame, and a foam layer.

An insulation system includes roof sheathing panels, spaced apart structural members, a first insulation material, and a second insulation material. The first insulation material is disposed between pairs of the spaced apart structural members. The second insulation material is disposed across the spaced apart structural members and the first insulation material, such that both the spaced apart structural members and the first insulation material are covered by the second insulation material.

An insulation dam is provided that facilitates placement and retention of loosefill insulation over a duct. Additionally, a depth indicator is provided that facilitates placement of a proper depth of the loosefill insulation over the duct.

An insulation system includes roof sheathing panels, spaced apart structural members, a plurality of pins, insulation support material, and insulation. The plurality of pins are secured to the roof sheathing panels, the structural members, or both. The insulation support material is connected to the pins to form an insulation cavity below the roof sheathing panels and below the structural members. Insulation is disposed on the insulation support material, between the spaced apart structural members and directly under the bottommost surfaces of the structural members.

An exterior insulation structure includes a first board member, first supporting members, a first thermal insulator, second supporting members disposed on the exterior side of the first supporting members, a second thermal insulator disposed on the exterior side of the first thermal insulator and between the second supporting members, securing members fixed to the exterior side of the second supporting members, and exterior wall members attached to the securing members. The adjacent exterior wall members are joined together without leaving a gap therebetween. Each securing member is long enough, in the second direction, to be fixable to at least two second supporting members and shorter, in the second direction, than each exterior wall member. A first gap is left between the securing members adjacent in the second direction. At least part of each second supporting member is made of a material having a thermal conductivity lower than that of steel.