Cork Underlayment - 1/4" (6mm) - 150 sq.ft. box

Rated 5 out of 5 based on 2 customer ratings

(2 customer reviews)

$0.89 per sq.ft. ~~$1.19~~ Save 25%$133.50 covers up to 150 sq.ft.

$133.50 per box ~~$178.50~~ · one box covers up to 150.00 sq. ft.

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6Mm Cork Underlayment Forna For Hardwood

6Mm Cork Underlayment Forna For Laminate

Cork Underlayment Forna 6Mm Sound Proofing

Key details

Made in: Portugal
Dimensions: 915mm (36 Inch) x 610mm (24 Inch)
Thickness: 6mm (1/4 Inch)
Construction: Cork

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Description

6mm Cork Underlayment Overview

Forna 6mm cork underlayment provides thermal insulation and sound control. Check compatibility with the finished floor and the required acoustic assembly.

Each sheet measures 2ft x 3ft (24” x 36”). A carton contains 25 sheets and covers approximately 150 square feet. See packing details for shipping weight.

Made from 100% agglomerated cork with water-based binders. Review the emissions and sourcing documentation for this Portugal-made product.

Performance & Benefits

Acoustic Insulation: Effectively reduces both airborne and impact noise thanks to cork’s unique cellular structure (40 million cells per cubic cm).
Elastic Support: Provides natural cushioning and resilience, protecting the surface floor and improving walking comfort.
Moisture Resistance: Suberin, cork’s natural wax, offers resistance to mold, mildew, and microbial growth, adding protection to flooring systems.
Thermal Barrier: Prevents cold transfer from the subfloor and retains room temperature, improving energy efficiency and enhancing underfloor heating performance.

This versatile underlayment is suitable beneath hardwood, engineered wood, bamboo, cork flooring, laminate, and tile. It not only supports your flooring structurally but also improves indoor comfort, well-being, and energy savings.

A Truly Sustainable Choice

Cork is harvested from cork oak bark. Published product background describes a tree lifespan of up to 200 years and around 15 harvests. Review the complete underlayment’s construction and project requirements.

Key Product Details

Material: 100% Agglomerated Cork
Thickness: 6mm (¼”)
Sheet Size: 24” x 36” (2ft x 3ft)
Density: 220kg/m³ ±10%
Coverage: 150 sq. ft. per carton (25 sheets)
See packing details for shipping weight.
Origin: Portugal
Certifications: MSDS, Resin Statement

Acoustical Ratings (Field Tested):

Warm Cork Underlay

Info & Guides

HOA approval? Download the HOA Flooring Approval Kit — per-thickness test statements, assembly ratings, certificates, and a cover-letter template your board can file.

Additional information

Board Thickness	6mm (1/4 Inch)
Board Length	915mm (36 Inch)
Board Width	610mm (24 Inch)
Core Type	Cork
Brand	Forna
Country of Origin	Portugal
Pieces in Package	25
Weight (packing)	49 lbs
Dimensions (packing)	37 × 25 × 7 in

Reviews (2)

2 reviews for Cork Underlayment - 1/4" (6mm) - 150 sq.ft. box

Rated 5 out of 5

Chelsea Zhang – April 14, 2016

Very nice material that easily cuts with a utility knife. Comes in sheets are easy to lay. You will need a vapor barrier in install in a basement. We got this because our base floors are concrete, we wanted laminate flooring and my wife wanted something a little softer and warm to walk on. This provided all we needed. It has nice cork smell when I opened box.
Rated 5 out of 5

Andrew KRIENING – October 12, 2016

Flooring to an up stairs floor where the sound was quite loud before application of this cork underlayment. Once it was layered I added 1/2 “ cork floating flooring which really made a difference of the noisy sound.

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Choose 6mm cork underlayment before buying

6mm cork underlayment is a 1/4 inch acoustic and thermal underlay for balanced acoustic support, finished floor height control, condos, bedrooms, offices, renovations, and everyday underlay projects. Compare thickness, subfloor needs, finished height, and room sound goals before ordering full boxes.

Confirm the full floor assembly before underlayment checkout

Check the finished floor’s approved underlayment, acoustic requirements, finished height and moisture limits before ordering.

Sample cork thickness and density first Check material density, thickness, finished height, and feel before choosing full underlayment boxes. Check underlayment compatibility Confirm hardwood, laminate, vinyl, tile, or cork flooring instructions allow the selected underlay layer. Acoustic target and finished height Match 3mm, 6mm, or 12mm cork to sound goals, door clearance, transitions, and subfloor conditions. Ask before buying underlayment Send floor type, subfloor, moisture concerns, height limits, acoustic target, and project timing for help.

Match 6mm cork underlayment to the finished floor

Under hardwood and engineered wood Confirm the finished floor manufacturer allows cork underlay, then match thickness to height, sound, and subfloor needs. Under laminate, vinyl, tile or cork Check installation instructions, adhesive or floating system rules, moisture limits, and finished height before ordering. Compare 3mm, 6mm and 12mm cork underlay Choose low-profile, balanced acoustic, or maximum impact-sound support before buying full boxes. Shop cork underlayment Compare 3mm, 6mm, and 12mm cork underlay by sound goal, floor type, and finished height. Order underlayment samples Check thickness, density, finished height, and project fit before buying full boxes. Ask an underlayment specialist Get help matching cork underlay to hardwood, laminate, vinyl, tile, cork, and acoustic requirements.

Product buying questions

What is 6mm cork underlayment best for?

6mm cork underlayment is an acoustic and thermal underlay for flooring projects where balanced acoustic support, finished floor height control, condos, bedrooms, offices, renovations, and everyday underlay projects matter under hardwood, laminate, vinyl, tile, or cork floors.

Should I choose 6mm cork underlayment for sound control?

Cork underlayment can help with impact sound and thermal comfort, but the right thickness depends on assembly, finished floor height, subfloor, building requirements, and the flooring manufacturer instructions.

Can 6mm cork underlayment go under hardwood, laminate, vinyl, tile, or cork?

Often yes, when the flooring manufacturer allows an underlay layer and the substrate, adhesive or floating-floor system, moisture limits, and finished height are confirmed before installation.

Should I order a 6mm cork underlayment sample first?

iCorkfloor recommends samples so buyers can compare thickness, density, finished height, feel, and project fit before ordering full underlayment boxes.