Rigid Board Insulation - NBS recommends that the rigid board insulation be installed in two layers, with the top layer being 1" thick, as shown above
Layered Insulation - This recommended layered method of insulation helps ensure that there are no gaps in the insulation. Gaps in the insulation can cause condensation problems.
Insulation - Insulation is not by Nucor
Roof Decking - Roof deck is fabricated in accordance with SDI specifications and tolerances. Nucor does not offer warranties on liner decking.
Panel Clips Fasteners - Panel clips fasteners must engage the Z-Bar member. Self-drilling fasteners without a washer are utilized.
Z-Bar Fasteners - Z-Bar fasteners must engage the deck. Self-drilling fasteners without a washer are utilized.
Vapor Barrier - A Vapor barrier is required in all Composite CFR applications to avoid condensation. Vapor barrier is not provided by Nucor.
UL90 Requirements - For UL90 requirements, please contact Nucor.
Z-Bar Spacing - Z-Bars (16 gauge minimum) are spaced 4'-0" apart to accommodate standard rigid board insulation widths.