WhisperMat-CS Acoustic Underlayment for Stone & Tile Floors
QuietWalk 100 sq. ft. 3 ft. x 33.3 ft. x 3 mm Underlayment with Sound and Moisture Barrier for Laminate and Engineered Floors QW100B1LT - The Home Depot
FLOORLOT BlueStep Underlayment with Moisture Barrier for Laminate and Wood Floors, (200 sq.ft Roll) - Amazon.com
The Only Waterproof Underlayment with a Built-In 6 Mil Vapor Barrier
Moisture-Proof EVA Foam Underlay with Gold Aluminum Film - China Flooring Underlay, Moisture-Proof Foam | Made-in-China.com
FloorComfort 4-ft W x 25-ft L x 5 T Premium Foam Moisture Resistant Flooring Underlayment (100-sq ft / (Fan fold) in the Flooring Underlayment department at Lowes.com