| 摘要 |
An insulated roof panel comprising a plurality of longitudinally extending spaced parallel web trusses secured to an inner sheathing and an outer sheathing. Each of the web trusses comprises at least one top cord, a bottom cord and a plurality of webs joining the cords together. A vapor barrier is sandwiched between the bottom cords of the web trusses and the inner sheathing. Insulation extends upwardly from the vapor barrier to a height less than the height of the insulated roof panel in order to allow air to flow over the insulation.
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