One of the major fiberglass insulation manufacturers (the color in the lead photo gives away which one I'm talking about) is getting serious about the installation quality of fiberglass batt insulation. They've put out a video (embedded below) and a document showing how to achieve RESNET Grade 1 installation quality with fiberglass batts. Have you seen these things yet?
spray foam Archives - Hansen Buildings
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Fiberglass Insulation Manufacturer Tackles Installation Quality - GreenBuildingAdvisor
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Install Insulation – Build A Green RV
Install Insulation – Build A Green RV
vapor barrier Archives - Hansen Buildings