Flooring | Underlayment - Forbo | Underlayment

Forbo | Underlayment

Regular price $72.75
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Foam Underlayment. Double Poly Acoustic Self Seal with built-in vapor barrier.

Sold per 100 sq/ft roll

Gauge 1/8" (3.18mm)

Size 4'x25'

IMPORTANT: A vapor barrier must be used for all installations of Marmoleum Click over concrete or radiant heat.


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  • Good day, I'm using Marmoleum click over concrete. What is the proper underlayment for this application ? Please describe how the recommended underlayment is installed. Thanks, Mike

    The proper underlayment is the Foam Underlayment Double Poly Acoustic Self Seal with built-in vapor barrier 3.18mm(1/8") Gauge

    Marmoleum Installation

    Tools and Materials Required: Hammer, straight back hand saw, keyhole saw or jigsaw, tape measure, pencil, fitting
    wedges, 3/8” spacers, angle or adjustable bevel, and foam underlayment or a moisture barrier (for concrete subfloors).

    The ambient room temperature should be at least 68° F (20° C) and the ambient relative humidity between 50% - 60%.

    To maintain the long term value of Marmoleum® Click, we recommend the use of a humidifier to avoid extreme drying
    out during the heating season.

    All Marmoleum® Click panels and squares should be inspected for manufacturing defects and damage prior to installation.

    Marmoleum® Click can be installed on any clean, dry, structurally sound subfloor. The subfloor must be flat to within
    3/32” in 6’ (2.0mm in 2 meters).

    For concrete subfloors, internal relative humidity should not exceed 75% (tested in accordance with the latest version of ASTM F 2170) and moisture vapor emissions must not exceed 3 pounds per 1,000 square feet in 24 hours (tested in accordance with the latest version of ASTM F 1869).

    When installing over a concrete subfloor or any subfloor with underfloor heating, always cover the subfloor with a vapor
    barrier. The edges of the vapor barrier should extend up the walls at least 2” with a minimum overlap of 8” at the seams.

    IMPORTANT: Please note that a minimum gap of 3/8” (10mm) is required for expansion on all sides between the
    floor construction and the wall. This distance must also be provided at all columns, heating pipes, steel door
    frames, etc.