QUESTIONS & ANSWERS
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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.