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Scotchgard Guardian

Whisper Step® acoustical underlayment features unmatched, high-density support under luxury vinyl flooring. Whisper Step® provides a significant reduction in impact noise and can be used over most substrates.


  • MLF/LVT/Rigid Core with attached back
  • Laminate
  • Sheet Vinyl
  • Engineered hardwood
  • Solid hardwood


Noise Guard

Reduces impact and airborne noise in-room and between floors.

Block-out® Moisture Guard

Prevents spills from getting into subfloor and allows moisture vapor to escape from beneath.

Mold & Mildew Guard

Fresh Dimension® antimicrobial works to inhibit the growth of mold, mildew, and odor-causing bacteria.


Makes hard-surface flooring more enjoyable.


Provides long-term support

Easy Installation

Lays flat and helps mask minor subfloor irregularities; can be used above and below grade.


Composition Made of High-Performance Synthetic Fiber
Thickness 0.080” (2 mm)
R-value 0.269
Color Gray
Moisture Barrier Block-Out® Moisture Guard
Dimensions 36" x 33.33' / 72" x 60'
Sq Ft per Roll 100 / 360
Sq Yd per Roll 11.11 / 40
Roll Weight 9 lbs. / 32 lbs.