
This is SketchUp image with everything but the wall graphic (that would add even more confusion) I almost never try to process the complete SketchUp scene at once, unless it is a simple, concise scene..

First rendering result with everything run together; take a look at the HVAC (ceiling equipment) in this rendering, and compare to the same when processed by itself below. Similar with the front tables and benches.

Another result run together; also take a look at the HVAC in this rendering, and compare to the same processed by itself, below. Same with the front tables and benches.

HVAC results when processed separately; now they are metal with some shine, and closer to what the actual equipment looks like. Don't worry about the rest of the scene, that won't be showing in the composite.

Another result for HVAC, when processed separately.

Result with front tables run separately.

Another result with front tables and benches run separately.

Detail of rendering once assembled (with a wall graphic layer added as well.)
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