
Delta 328-sq ft Standard 0.3125-in Flooring Underlayment
Premium Polypropylene Flooring Underlayment, 0.3125-in
Delta’s premium polypropylene underlayment creates a sealed vapor barrier and warm, dry subfloors. Ideal for basements and moisture-prone areas, this 0.3125-in roll installs fast and enhances sound absorption and comfort.
Key Features:
- Moisture Protection: Sealed vapor barrier helps prevent moisture rise for warmer, drier basements
- Easy Installation: Roll format designed for fast, straightforward setup
- Durable Material: High-density polyethylene construction with polypropylene design for long-term performance
- Sound Control: Adds sound absorption with rated IIC 20–25 performance
- Mold/Mildew Resistant: Resists mold and mildew growth and is non-allergenic
Specifications Table:
| Specification | Details |
|---|---|
| Collection Name | UNDERLAYMENT |
| Type | Roll |
| Thickness | 0.3125 in |
| Thickness Unit of Measure | Inches |
| Antimicrobial | Yes |
| Construction Type | Polypropylene |
| Cushioning | No |
| Enhancements | Made of high density polyethylene |
| Grade | Premium |
| IIC Rating | 20-25 |
| Moisture Resistant | Yes |
| Mold/Mildew Resistant | Yes |
| Package Quantity | 1 |
| R-Value per Inch | 1.92 |
| Sound Absorbing | Yes |
| STC Rating | Less than STC-30 |
| Vapor Barrier | Yes |
| CA Residents: Prop 65 Warning(s) | No |
| Warranty | 5-year limited |
| UNSPSC | 30161700 |
| Coverage Area | 328 sq ft |
Frequently Asked Questions (FAQ):
Q: Can this underlayment be used in basements?
A: Yes, it’s designed to create a sealed vapor barrier that helps keep basements warm and dry.
Q: What flooring types is it compatible with?
A: Suitable for use under laminate and similar floating floors; verify your specific floor manufacturer’s requirements.
Q: Does it provide sound reduction?
A: Yes, it offers sound absorption with an IIC rating of 20–25 and STC less than 30.
Q: Is it antimicrobial or mold resistant?
A: Yes, it is antimicrobial and mold/mildew resistant.
Q: What is the warranty?
A: It includes a 5-year limited warranty.
A Sleek, Smart Foundation for Dry, Quiet Floors
This underlayment introduces a refined, architectural texture beneath your surfaces, transforming chilly slabs into a warm, resilient base. Its vapor-sealing performance is the quiet hero, delivering a calmer acoustic profile and a cleaner, drier feel underfoot. Style it beneath wide-plank laminate to highlight airy, contemporary rooms while keeping moisture at bay. Consider it a discreet essential—luxury starts from the ground up.
Elevate your flooring with Delta’s moisture-sealing underlayment—add it to your cart to create a warmer, quieter, longer-lasting foundation.
Original: $164.03
-70%$164.03
$49.21Product Information
Product Information
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Description
Premium Polypropylene Flooring Underlayment, 0.3125-in
Delta’s premium polypropylene underlayment creates a sealed vapor barrier and warm, dry subfloors. Ideal for basements and moisture-prone areas, this 0.3125-in roll installs fast and enhances sound absorption and comfort.
Key Features:
- Moisture Protection: Sealed vapor barrier helps prevent moisture rise for warmer, drier basements
- Easy Installation: Roll format designed for fast, straightforward setup
- Durable Material: High-density polyethylene construction with polypropylene design for long-term performance
- Sound Control: Adds sound absorption with rated IIC 20–25 performance
- Mold/Mildew Resistant: Resists mold and mildew growth and is non-allergenic
Specifications Table:
| Specification | Details |
|---|---|
| Collection Name | UNDERLAYMENT |
| Type | Roll |
| Thickness | 0.3125 in |
| Thickness Unit of Measure | Inches |
| Antimicrobial | Yes |
| Construction Type | Polypropylene |
| Cushioning | No |
| Enhancements | Made of high density polyethylene |
| Grade | Premium |
| IIC Rating | 20-25 |
| Moisture Resistant | Yes |
| Mold/Mildew Resistant | Yes |
| Package Quantity | 1 |
| R-Value per Inch | 1.92 |
| Sound Absorbing | Yes |
| STC Rating | Less than STC-30 |
| Vapor Barrier | Yes |
| CA Residents: Prop 65 Warning(s) | No |
| Warranty | 5-year limited |
| UNSPSC | 30161700 |
| Coverage Area | 328 sq ft |
Frequently Asked Questions (FAQ):
Q: Can this underlayment be used in basements?
A: Yes, it’s designed to create a sealed vapor barrier that helps keep basements warm and dry.
Q: What flooring types is it compatible with?
A: Suitable for use under laminate and similar floating floors; verify your specific floor manufacturer’s requirements.
Q: Does it provide sound reduction?
A: Yes, it offers sound absorption with an IIC rating of 20–25 and STC less than 30.
Q: Is it antimicrobial or mold resistant?
A: Yes, it is antimicrobial and mold/mildew resistant.
Q: What is the warranty?
A: It includes a 5-year limited warranty.
A Sleek, Smart Foundation for Dry, Quiet Floors
This underlayment introduces a refined, architectural texture beneath your surfaces, transforming chilly slabs into a warm, resilient base. Its vapor-sealing performance is the quiet hero, delivering a calmer acoustic profile and a cleaner, drier feel underfoot. Style it beneath wide-plank laminate to highlight airy, contemporary rooms while keeping moisture at bay. Consider it a discreet essential—luxury starts from the ground up.
Elevate your flooring with Delta’s moisture-sealing underlayment—add it to your cart to create a warmer, quieter, longer-lasting foundation.


















