QuietWalk Plus Acoustical Underlayment Review (2026)
By The DIYPicks Team · Updated July 2026
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- Laminate and engineered wood over concrete
- Upstairs rooms needing sound control
- Floors that do not have an attached pad
A premium recycled-felt underlayment with an attached moisture barrier and top-class IIC 71 sound rating. Ideal under laminate or engineered wood over concrete, especially in upstairs rooms where quiet matters.
Pros
- Dense recycled-fiber felt delivers excellent IIC 71 sound absorption for upstairs rooms
- Attached vapor barrier lets you install directly over concrete without a separate sheet
- GREENGUARD Gold certified with low VOC emissions for indoor air quality
Cons
- At 3 mm it is best for laminate and engineered wood, not thin click LVP that needs a firmer base
- Should not be stacked on flooring that already has an attached pad
- Costs more than plain foam underlayment at roughly 50 cents per square foot
Specifications
| Thickness | 3 mm recycled fiber felt |
|---|---|
| Roll Size | 3 ft x 33.4 ft (100 sq ft) or 6 ft x 60 ft (360 sq ft) |
| Sound Rating | IIC 71 / STC 66 |
| Moisture Barrier | Attached vapor barrier film |
| Compatible With | Laminate, engineered hardwood, some floating floors |
| Certification | GREENGUARD Gold, made in USA |