Abstract: An adjustable roof insulation system for metal buildings or the like in which beams serve as the support for a metal roof sheet comprising a series of parallel spaced support units secured to the beams, each comprising a longitudinally extending first member and a longitudinally extending second member, the first and the second members being longitudinally adjustable relative to each other, the first and the second members each having one end supported by the beams and their other ends in contact engagement, the first and the second members having substantially the same cross-sectional configuration and in mating contact engagement at the other ends, means for securing the other ends in adjustable relation, the means having a partial wrap-around configuration for securing the other ends against vertical displacement, means for connecting the beams to the first and the second members to prevent lateral displacement of the members on the beams, the first member having substantial length relative to the second m

Abstract: An insulation system for a roof structure which includes a semi-rigid insulation blanket overlying a support structure across roof purlins and having additional insulation material filling a U-shaped trough created by the blanket between adjacent purlins. The semi-rigid insulation blanket is notched by the manufacturer at predetermined points to enable the blanket to easily and securely fold over and around the support structure and roof purlins.

Abstract: A T-shaped batt of insulation with a U-shaped vapor barrier covering the lower surface of the batt. The vapor barrier, which extends beyond the ends of the batt is used to connect consecutive batts. The T-shaped batts are installed by rolling them between parallel structural members so that the horizontal flange sections of the T-shaped batts overlap atop the structural members.