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6Mm Cork Underlayment Forna For Hardwood

6Mm Cork Underlayment Forna For Laminate

Cork Underlayment Forna 6Mm Sound Proofing

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

Made in PortugalCork Underlayment6mm (1/4 Inch)

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.

Half price with a flooring order of 100 sq ft or more, free from 300 sq ft.

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Description

6mm Cork Underlayment Overview

Forna’s 6mm cork underlayment provides both comfort and performance by reflecting natural body heat, keeping floors pleasantly warm underfoot. As a mid-range option in thickness, this product strikes the perfect balance between thermal insulation and sound control.

Each sheet is supplied in its natural cork form, pre-cut to 2ft x 3ft (24” x 36”), and conveniently packaged 25 sheets per carton. One box covers approximately 150 square feet and weighs about 44 lbs.

Crafted from 100% agglomerated cork, it is free of toxins and formaldehyde. Even the binders used are water-based, ensuring a healthier, eco-conscious product. From responsible bark harvesting in Portugal to final production, every step is designed to minimize environmental impact while delivering long-lasting quality.

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 a renewable material harvested without harming the cork oak tree. Each tree can live up to 200 years and provide around 15 harvests in its lifetime. Using cork supports healthy forests while delivering a greener, smarter alternative to synthetic underlayments.

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)
Weight: 44 lbs per carton
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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Details

Product details

Best use

Kitchen, Bedroom, Living room, Basement. Keep cork out of standing-water conditions and use mats at exterior doors and heavy splash zones.

Box specs

Install: Project dependent
Coverage: 150 sq. ft. per box
Pieces: 25

Install and care

Acclimate cartons, inspect planks, leave expansion space, and follow the click-lock installation guide.

Sweep or vacuum grit, damp mop with cork-safe cleaner, and protect chair legs with felt pads.

Warranty details are listed in the product specifications.

Shipping and returns

Most in-stock orders ship within two business days. Shipping cost and delivery options are calculated during checkout.

Returns are coordinated through the service team, with return shipping handled under the published policy.

Shipping help Return policy

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

Direct underlayment shoppers need the finished floor approval, sample feel, acoustic target, finished height, moisture limits, and project support checked before they order boxes.

Sample cork thickness and density first Check material density, thickness, finished height, and feel before choosing full underlayment boxes. Finished floor approval path 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.