We have a project that has structural masonry walls, and interior steel studs. Appendix G requires 7.5 c.i. for our walls, so I have two questions:
1. Can the continuous insulation be located on the interior wall and can it be just spray foam and not continuous board insulation?
2. What is the rule for insulating between floors in this case? Do we have to spray foam in between the steel and CMU between floors?
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David Dowling
Mechanical DesignerWest Plains Engineering
2 thumbs up
July 19, 2011 - 3:27 pm
I don't recal Appendix G specificly requiring a c.i. It does indicate that Steel-framed above grade walls from section 5 are to be used for the baseline model, which allows either a maximum assebly U-value or minimum insulation R-value. I wouldn't worry so much about the c.i. as long as the model meets the assembly requirements.