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Subfloor Requirements
All subfloors should be inspected prior to installation. All subfloors must be smooth, clean, dry, structurally sound, and free of dust, dirt, oil, wax, paint or any other contaminant that would inhibit a good bond.
Use a quality Portland-Cement based patching compound to fill or smooth irregularities that could show through the new flooring.
Concrete on or above grade must be free of moisture or high alkalinity and be protected by a moisture barrier installed at the time of construction. A concrete slab shall be cured a minimum of 90 days before performing moisture tests prior to the installation of your new flooring. These time periods are absolute minimum and the concrete may require additional drying time dependant upon local environmental conditions.
Installation Over Other Flooring Surfaces
If you are installing EarthWerks flooring over one layer of existing non-cushioned floor covering, it should be well adhered to the subfloor, or scraped
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off before installing your new EarthWerks Vinyl Tile. The use of a good quality embossing leveler to fill in the surface texture of the existing floor is required. Otherwise, the profile of the existing floor will telegraph thru the new flooring and adhesive may not cure correctly.
When tiles are installed over concrete, wood, or pre-existing resilient floors, apply ST 100 Pressure Sensitive Adhesive using a 1/16” x 1/16” x 1/16” square-notched trowel. Allow adhesive open time so it can dry to the consistency of contact cement. Tack time will vary depending upon temperature and humidity, and you will also observe the color change from white to yellow. Observing this open time is very important to ensure proper bonding and to prevent possible bleed through. At that point, you can apply tiles.
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