Whisper Step Premium Hard Surface Underlayment

Whisper Step® 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.

Benefits:

• For use over in-floor heating and is recommended by the Radiant Professionals Alliance as an excellent choice
• Can be used over most substrates – on, above, or below grade
• Fresh Dimension® antimicrobial inhibits the growth of mold, mildew, and odor-causing bacteria

Applications:

• Luxury vinyl tile/plank
• Rigid composite
• WPC
• Laminate
• Engineered wood
• Solid hardwood

 Specifications:

• Impact Insulation Class (IIC): 66*** ASTM E492 / E989
• ∆ IIC: 22 ASTM E2179
• Sound Transmission Class (STC): 63*** ASTM E90 / E413
• Composition: Made of High-Density Synthetic Rubber
• Density: 62 lbs/ft3 or 42 oz/yd2
• Shore A Hardness: 70 ASTM D2240
• IFD @ 25%/65%: 677.2 lbs/5,000+ lbs
• Thickness: 0.056” (1.42 mm)
• Color: Green
• R-Value: 0.02
• Moisture Barrier: Block-Out® Moisture Guard
• Permeance*: 1.151 ASTM E96
• Water Vapor Emission 0.252 lbs/1000 ft2 /24 hr ASTM E96
• Castor Durability Test: Passes 25,000 Cycles**
• Product Codes: BM0042 BM0040
• Dimensions: 36” x 33.33’/54” x 44’
• Ft2 /Roll: 100 200
• Yd2 /Roll: 11.11/22.22
• Roll Weight: 29 lbs/58 lbs

Technical

Product Data Sheet | Installation Instructions | Acoustic Comparison | Warranty