This invention provides fall protection systems, in metal building construction, and methods of installing such systems. A given such system comprises a suspension fabric, supported by a grid-work of longitudinal and lateral support bands. The distance of the safety band from the rafter corresponds to about 40 percent to about 75 percent of the diameter of the bag. Thus for a 30-inch diameter bag, the distance between the edge of the rafter and the middle of the safety band is about 12 inches to about 23 inches. The safety band protects the suspension fabric from being cut by the near edge of the rafter when a falling object impacts the fall protection system near the edge of the rafter.

An insulated building structure, in particular an insulated roof structure or a wall structure of a building, comprises at least one thermal insulation layer. At least one moisture-variable protective layer for the thermal insulation layer is provided on an outer side of the thermal insulation layer and on an inner side of the thermal insulation layer facing a building interior of the building. The protective layers each have a water vapor diffusion equivalent air layer thickness S.sub.d. The water vapor diffusion equivalent air layer thicknesses S.sub.d of the two protective layers deviate from each other by less than 20%, preferably less than 10%, in the range of a relative humidity from 0% to 25% and/or in the range of a relative humidity from 80% to 100%.

According to one embodiment, a halogen free roof system is described. The roof system includes a structural deck that is positioned above joists or other support members. Polyisocyanurate foam insulation is positioned atop the structural deck. The polyisocyanurate foam insulation has an isocyanate index greater than 200 and includes a polyisocyanurate core having a halogen free fire retardant. A water proof membrane is positioned atop the polyisocyanurate foam insulation. The polyisocyanurate core is able to form a sufficiently stable char when exposed to flame conditions such that the polyisocyanurate core is able to pass the ASTM E-84 test.

This invention provides fall protection systems comprising a suspension fabric, supported by a grid-work of longitudinal and lateral bands, in metal building construction. The fall protection system uses the combination of relatively softer banding, a safety band spaced a particular distance from each rafter, and safety clips to attach the safety bands to the intermediate purlins, thus to distribute the force of impact of a load, falling close to a rafter, to better absorb and dissipate the force of the impact, including distributing the impact of the falling load over a greater area of the roof structure. The invention further provides methods of making elements of such systems, methods of installing elements of such systems, and buildings embodying such systems.

A roofing system includes a first group of hook fasteners, a second group of hook fasteners, and a roof covering. The first group of hook fasteners is configured to be attached to a first sloped plane of a roof, and the second group of hook fasteners is configured to be attached to a second sloped plane of the roof. The roof covering has a bottom surface, and the bottom surface of the roof covering includes a plurality of loop fasteners that are configured to engage with at least one of the first group of hook fasteners or the second group of hook fasteners. When the plurality of loop fasteners are engaged with the first group of hook fasteners, the roof covering is resisted from moving in a first direction and not resisted from moving in a second direction that is opposite the first direction. When the plurality of loop fasteners are engaged with the second group of hook fasteners, the roof covering is resisted from moving in the second direction and not resisted from moving in the first direction.

A radiant barrier has a layer of a flexible polymer, such as TPO, and a layer of metallic aluminum bonded thereto. A reinforcement layer, such as a fiberglass scrim, and a layer of adhesive, such as EVA, may be used to strengthen the barrier and prevent de-lamination. LDPE may be incorporated into the TPO to increase strength. The barrier may also be a moisture barrier. The layers may be laminated by a heated roll set and the aluminum applied by vapor deposition.

A sheet material is provided that includes a woven layer having a first side and an opposing second side, the woven layer formed from strand including a polyolefin polymer and a nucleating agent; a first polymeric coating disposed on the first side of the woven layer; and optionally a second polymeric coating disposed on the second side of the woven layer. The sheet material exhibits reduced thermal shrinkage.

An ultra violet stable polyester membrane with a polyacrylic coating on one side and a coated pressure sensitive adhesive coating on its other side capable of allowing water vapor to pass through it. The pressure sensitive adhesive is formed of a copolymer comprising a backbone of n-butyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate which is mixed with at least one surfactant and emulsified to produce air bubbles which form pores when the copolymer is set with about 80% to about 90% of the pore sizes ranging from about 200 microns to about 300 microns and being uniformly distributed to form a flow path through the pressure sensitive adhesive.

A roofing assembly, comprising: a membrane; a plurality of cords, attached in a spaced-apart configuration to the flexible membrane and extending in a first direction; a plurality of battens, attached in a spaced-apart configuration to the plurality of cords and extending in a second direction that is orthogonal or substantially orthogonal to the first direction, each of the battens being attached to at least one of the plurality of cords; wherein a first set of the battens is offset at least one end in the second direction from a second set of the battens.

An ice backing flashing layer for a roof including an upper portion attachable to an upper surface of the roof, a lower portion attachable to a fascia portion of the roof, and a bend between the upper and lower portions attachable over an edge of the roof. A roofing system including a first underlayment layer and the ice backing flashing layer adjacent to and above the first underlayment layer. The roof system optionally including at least one of a second underlayment layer adjacent to and above the upper portion of the ice backing flashing layer, a drip edge layer adjacent to and above the second underlayment layer, or a third underlayment layer adjacent to and above the drip edge.