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Does the Quiet Walk underlayment plastic/vapor barrier face up or down when installing? - MP Global Products, LLC
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Subfloor Focus: Minimizing Moisture – Part 3: Vapor Barriers and Pads for Floating Floors - Hardwood Floors Magazine
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Project Source 3.83-ft W x 26.33-ft L x 6 T Premium Poly Film Moisture Resistant Flooring Underlayment (100-sq ft / (Roll) in the Flooring Underlayment department at Lowes.com
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FLOORLOT BlueStep Underlayment with Moisture Barrier for Laminate and Wood Floors, (200 sq.ft Roll) - Amazon.com
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subfloor - Should I put vapor barrier between sub floor and joists? - Home Improvement Stack Exchange
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