Among other things, there is shown embodiments of an enclosure such as a portable building with features focusing on overall improvement in energy usage. Wall, roof and floor configurations are disclosed that provide significant energy savings. Methods are also disclosed for preparing such features and/or refitting existing portable buildings for such energy savings.

Compositions comprising highly reflective microcrystalline/amorphous materials are provided. In some instances, the highly reflective materials are microcrystalline or amorphous carbonate materials, which may include calcium and/or magnesium carbonate. In some instances, the materials are CO.sub.2 sequestering materials. Also provided are methods of making and using the compositions, e.g., to increase the albedo of a surface, to mitigate urban heat island effects, etc.

An insulation support system preferably includes an edge-folded ceiling liner sheet, an encapsulated package and a plurality of compressible thermal spacers. The edge-folded ceiling liner sheet includes opposed folded-up edges. The folded-up edges have sufficient length to clear pinch points along structural beams. Opposing folded-up edges of the edge-folded ceiling liner sheet are creased on the fold to fit in the encapsulated package. The edge-folded ceiling liner sheet is fan-folded for retention in the encapsulated package. A sheet slot is formed through at least one lengthwise sidewall of the encapsulated package. A removable edge seal strip is applied over the sheet slot. A compressible thermal spacer includes a snap clip and a compressible insulation material. A bottom of the compressible insulation material is bonded to a top of the snap clip. The snap clip is attached to a top flange of a purlin eliminating the need for exposed roof insulation.

The panel includes a water resistant barrier layer secured atop its outward facing surface. The water resistant barrier layer includes a skid resistant surface. The panels are made of lignocellulosic material. The water resistant and skid resistant surface may include indicia for aligning strips of tape or for aligning fasteners. A method for manufacturing the water resistant building panels is also disclosed and includes the steps of feeding paper onto a forming belt, depositing lignocellulosic material and the binding agent onto the forming belt so as to form a lignocellulosic mat, applying heat and pressure so as to impart the skid resistant surface on the paper, and cutting panels to predetermined sizes.

A roof system and related methods for installing the roof system. The roof system includes a roof diaphragm including a nail board and an insulating panel connected to the nail board, wherein the insulating panel is adapted to be positioned between the nail board and a roof frame so that the insulating panel engages the roof frame. In several exemplary embodiments, the nail board comprises one or both of: oriented strand board (OSB) and plywood. In several exemplary embodiments, the insulating panel comprises one or both of: a closed-cell rigid polyisocyanurate (polyiso) foam core and a polystyrene foam core. In several exemplary embodiments, the roof system further includes a plurality of nail board fasteners connecting the roof diaphragm to the roof frame, the nail board fasteners each extending through the nail board, through the insulating panel, and into the roof frame to a depth.

A framing assembly has at least one rafter vent assembly having a connecting member with a plurality of vent tubes for providing supplemental ventilation and additional structural support to a frame of a building structure. The at least one rafter vent assembly may be an interior rafter vent assembly or an exterior rafter vent assembly. The interior rafter vent assembly has at least one brace member and a connecting member, with the connecting member having a connecting plate, two end plates, and the plurality of vent tubes. The exterior rafter vent assembly has the connecting member that has a connecting plate and the plurality of vent tubes. The framing assembly also preferably has a plurality of modified structural insulated panels (SIPs) and modified rafter splines.

The panel includes a water resistant barrier layer secured atop its outward facing surface. The water resistant barrier layer includes a skid resistant surface. The panels are made of lignocellulosic material. The water resistant and skid resistant surface may include indicia for aligning strips of tape or for aligning fasteners. A method for manufacturing the water resistant building panels is also disclosed and includes the steps of feeding paper onto a forming belt, depositing lignocellulosic material and the binding agent onto the forming belt so as to form a lignocellulosic mat, applying heat and pressure so as to impart the skid resistant surface on the paper, and cutting panels to predetermined sizes.

A roof system and related methods for installing the roof system. The roof system includes a roof diaphragm including a nail board and an insulating panel connected to the nail board, wherein the insulating panel is adapted to be positioned between the nail board and a roof frame so that the insulating panel engages the roof frame. In several exemplary embodiments, the nail board comprises one or both of: oriented strand board (OSB) and plywood. In several exemplary embodiments, the insulating panel comprises one or both of: a closed-cell rigid polyisocyanurate (polyiso) foam core and a polystyrene foam core. In several exemplary embodiments, the roof system further includes a plurality of nail board fasteners connecting the roof diaphragm to the roof frame, the nail board fasteners each extending through the nail board, through the insulating panel, and into the roof frame to a depth.

A compressible foam closure for roof panels includes a core having an elongate body defining a longitudinal axis. The elongate body has at least two opposing sides and defines a thickness. A plurality of slits are formed in the core, into the thickness, extending from the at least two opposing sides toward the longitudinal axis. A thin, flexible, water impermeable skin covers the core. The slits can be formed fully through the core to form slices of the core that are stacked together.

Support members for a roof system are provided to allow for positioning panels of a roof apart from building members so that building components, such as insulation may be placed between the roof panels and the building members. The support members may be utilized in new buildings or to retrofit existing buildings. Each of the support members may comprise a single support member that has a base portion operatively coupled to an offset portion that is operatively coupled to an upper portion. One or more channels may be provided in the base portion, offset portion, and/or the upper portion to provide structural support and to allow the support members to be operatively coupled to each other and other building members without the need for additional components.