SilentStep™ Ultra
Features
Superior performance acoustical flooring underlayment with unsurpassed sound absorption properties for use with laminate and hardwood floating flooring.
- High density 100% closed cell polyolefin foam core
- Attached 4 mil polyethylene moisture barrier for superior subfloor moisture resistance
- Engineered for ideal thickness – .08" (2mm)
- Seam overlap protection with peel and stick adhesive strip eliminating the need to tape seams when installing over concrete
- Stable, will not crumble or deteriorate under flooring
- Excellent resilience and resistance to tears and punctures
- Does not absorb or trap and hold subfloor moisture
- Mold and mildew resistant: Will not support fungal or bacterial growth
- Non-allergenic
- May be used over concrete or wood substrates on all grades of approved subflooring
Specifications
| Style |
LCSSU |
| Roll size |
100 Sq Ft |
| Thickness |
0.08" (2mm) |
| Tear Strength |
4.9 lbs |
| Density |
6 lbs./cu. ft. |
| Compression set. |
48.2% |
| Compression Resistance (lbs. @25%/65%) |
39.3/101.8 |
| Composition |
4 mil Polyethylene |
| Attached Film Core |
Polyolefin Foam |
| Cell Structure |
100% Closed |
| R Value |
0.34 |
Performance + Testing
| Impact Insulation Class (IIC) rating |
50-70 dB* |
| Sound Transmission Class (STC) rating |
50-70 dB* |
Impact Insulation Class (IIC) rating (ASTM E492-09/E989-06) When paired with the appropriate wood flooring, results typically range from 50 –70, depending on subfloor assembly and wood product. For specific results, please contact your account manager.
(STC) rating (ASTM E90/E413) STC (Sound Transmission Class) is a measure of airborne sound transmission loss in an adjacent room. Floor-covering affects sound generated in the room above and below. Floor-covering does not affect STC, but floor assembly construction and amount of insulation in a ceiling.
Acoustical performance achieved when tested with wood products based on approved installation instructions.