VIP roofing insulation

摘要

An insulating composite panel (ICP) 100, has an initial thermal resistance (R value) greater than about 50 ft2·° F.·h/Btu (8.8 K·m2/W) at a thickness less than 2.0 in (51 mm). The ICP is preassembled with a vacuum insulation panel (VIP) 102 protected by a lower rigid cover board 104 adhered to a lower surface of the VIP by a lower grid of adhesive ribbons 108, and by an upper rigid cover board 106 adhered to an upper surface of the VIP by an upper grid of adhesive ribbons 110. Each of the adhesive grids 108, 110 is augmented by a respective continuous ribbon of adhesive 112, 114 along the entire perimeter of each respective interface between the VIP 102 and each respective cover board 104, 106. The ICP has high resistance to wind uplift, mold, and fire, and low mass per unit area.

主权项

1. An insulating composite panel (ICP) for use on building roofs, comprising:
a prefabricated assembly having a thickness less than 3.0 inches (76 mm) and an initial thermal resistance (R value) greater than 30 degrees Fahrenheit-square foot-hour per Btu (30° F.·ft2·h/Btu) (5.3 K·m2/W), wherein the prefabricated assembly includes:
a vacuum insulation panel (VIP) comprising:
a) a substantially evacuated and hermetically sealed enclosure, with walls made of a high gas barrier material, in an approximately rectangular prismatic shape with low thickness/width and thickness/length ratios, andb) an internal rigid or semi-rigid core for keeping enclosure walls from collapsing while evacuated;a lower rigid cover board adhered to a lower surface of the VIP, andan upper rigid cover board adhered to an upper surface of the VIP; and wherein:
the prefabricated assembly is adapted for maintaining its integrity at a wind uplift pressure of at least 120 pounds-force per square foot (5.75 KPa) according to ANSI/FM 4474 Appendix B: Simulated Wind Uplift Pull Test Procedure, by means comprising a continuous ribbon of adhesive along the entire length-width perimeter of each of the two interfaces between VIP and rigid cover board.