DELTA 0.104-sq ft Standard 0.005-in Flooring Underlayment

DELTA

From the DELTA hall The buying guide

DELTA 0.104-sq ft Standard 0.005-in Flooring Underlayment

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SKU model-58040

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Details

DELTA FL dimpled underlayment membrane

A high-density polyethylene air-gap underlayment for slab-on-grade floors that creates a capillary and vapor break to keep basements dry and warmer. Installed dimple-side down, it forms a ventilated space and offers rugged compressive strength for a stable subfloor under carpet, vinyl, hardwood, or laminate.

Key Features:

  • Moisture Protection: Air-gap design provides a reliable capillary break and vapor barrier over concrete slabs.
  • Warmer Floors: Creates a thermal break so finished floors feel warmer and more comfortable.
  • Tough & Impact-Resistant: HDPE membrane with outstanding compressive strength for a durable subfloor.
  • Easy Installation: Lightweight rolls; seams taped with DELTA-MOISTURE PROOF TAPE.
  • Versatile Finish Options: Works under plywood and a variety of floor coverings, including carpet, vinyl, hardwood, and laminate.

Please check the Product Data Sheet Here

Specifications Table:

Specification Details
Material High-Density Polyethylene (HDPE)
Design Air-gap dimpled membrane; installed dimple side down
Function Capillary break and vapor barrier; thermal break
Compressive Strength >4500 lb/sf
Thickness / Height Approximately 8 mm
Seam Treatment DELTA-MOISTURE PROOF TAPE
Installation Lightweight rolls; fast and easy for homeowners
Compatible Finish Flooring Carpet with underlay, vinyl, hardwood; laminate can be installed directly

Frequently Asked Questions (FAQ):

Q: Can this be installed directly over concrete?
A: Yes. Install dimple side down over the slab and tape seams with DELTA-MOISTURE PROOF TAPE.

Q: Do I need plywood on top?
A: For most finishes, place plywood over the membrane before installing flooring; laminate can be laid directly on the membrane.

Q: What is it made of?
A: A special high-density polyethylene (HDPE) for durability and impact resistance.

Q: Will it reduce ceiling height?
A: Minimal headroom loss; membrane thickness is approximately 8 mm.

Q: Where is it best used?
A: Basements and slab-on-grade floors where moisture control and a warmer floor surface are desired.

Elevate Your Basement with a Warm, Dry Foundation

This dimpled membrane quietly transforms cold concrete into a cozy, resilient base for refined flooring. I love its sculptural surface—functional yet chic—creating an air space that keeps interiors feeling fresh and warm. Top it with sleek plywood and a tailored finish, from oak planks to plush carpet, for a seamless, elevated look. It’s a smart, luxe essential for beautifully livable lower levels.

Create a warm, moisture-protected foundation—add DELTA FL underlayment to your project today.

Installation

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