Whisper Step®
Whisper Step® luxury vinyl 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.
Applications
- MLF/LVT/Rigid Core with attached back
- Laminate
- Sheet Vinyl
- Engineered hardwood
- Solid hardwood
Benefits
- Noise Guard
Reduces impact and airborne noise in-room and between floors. Reduces up to 10 decibels of in-room noise and an overall improvement between floors of 25%. - 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. - Comfort
Makes hard-surface flooring more enjoyable. - Support
The class leading extreme density not only resists compression but will perform for the life of the floor. - Easy Installation
Lays flat and helps mask minor subfloor irregularities; can be used above and below grade.
Specifications
| Composition: | Made of High-Density Synthetic Rubber |
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| Density: | 62 lbs/ft³ or 42 oz/yd² |
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| Shore A Hardness: | 70 ASTM D2240 |
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| IFD @ 25%/65%: | 677.2 lbs/5,000+ lbs |
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| Thickness: | 0.056" (1.42 mm) |
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| R-value: | 0.02 |
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| Color: | Green |
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| Moisture Barrier: | Block-Out® Moisture Guard |
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| Permeance: | 1.151 ASTM E96 * |
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| Water Vapor Emission: | 0.252 lbs/1000 ft2/24 hr ASTM E96 |
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| Castor Durability Test: | Passes 25,000 Cycles** |
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Acoustical Properties
| Impact Insulation Class (IIC): | 66*** ASTM E492 / E989 |
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| ΔIIC: | 22 ASTM E2179 |
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| Sound Transmission Class (STC): | 63*** ASTM E90 / E413 |
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Protection
| Indoor Air Quality: | Passes California Section 01350 for low VOC emissions |
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| Antimicrobial: | Yes |
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| Warranty: | Life-of-the-Floor |
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- * Conduct moisture tests in accordance with flooring manufacturer installation guidelines and requirements
- ** Passes Castor Durability Test for 25,000 cycles when tested under minimum of 3 mm double-glued luxury vinyl plank and minimum 3.2 mm floating-click
- *** When tested with floor-ceiling assembly (6” concrete slab)
- Shore A Hardness: ASTM D2240
- IFD: ASTM D3574
- Permeance: ASTM E96
- IIC: ASTM E492-09 / ASTM E989-06
- Δ IIC: ASTM E2179-03
- STC: ASTM E90 / ASTM E413-10
