First Step™ Premium 3-in-1 Underlayment
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- Description
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- For use with all laminate and engineered hardwood floating floors
- Cushioning Styrofoam beads between plastic top and bottom layers for air circulation
- Corrects minor subfloor imperfections and reduces ambient noise
- Ideal in condos and multi-level dwellings
- Gold Guard antimicrobial protection and constant air movement inhibits mold growth and protects floors from moisture vapor
- Outstanding compression resistance over time for long lasting cushion
- Includes adhesive strip and 4″ overlap film for linking multiple rolls
- Ideal for radiant heated floors with R-Value 0.39
- For use with below, on and above grade subfloors
- Sound Transmission Lost Test (STC) rating of 67
- Impact Sound Transmission Test (IIC) rating of 68
Data Sheet
| 70-102-1 | 70-102-12 | |
| Coverage: | 630 sq ft per roll | 100 sq ft per roll |
| Width of Roll: | 40" | 40" |
| Length of Roll: | 189 ft. (2268") | 30 ft. (360") |
| Thickness: | 2 mm | 2 mm |
| Weight per Roll: | 21 lbs. 2 oz. | 3 lbs. 6 oz. |
| Diameter of Roll: | 15 - 1/2" | 8" |
| Sound Ratings: | IIC 68 / STC 67 / ∆ 20 / R-Value** 0.39 | IIC 68 / STC 67 / ∆ 20 / R-Value** 0.39 |
IIC and STC tests measure sound transference from an upper level room to a lower level room. The IIC measures sound such as moving furniture and walking, while the STC measures sound such as voices and television. Minimum sound rating required by most building codes and architects is 50. ∆ Delta Rating is the only true measurement of sound reduction from a product (not a floor assembly).
**Compression Test Results - In a standardized test using 1,320 lbs. of pressure, ROBERTS Airguard Underlayment retained 96% of its original thickness after seven days, compared to only 57% by a leading 2-in-1 foam product.
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