Delta 328-sq ft Standard 0.3125-in Flooring Underlayment

Delta 328-sq ft Standard 0.3125-in Flooring Underlayment

Regular price $164.03

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Shipping calculated at checkout.

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.

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