Installation & Assembly
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Copyright © 2018 Mannington or its affiliates. All rights reserved.
2
ADURA
®
Flex
Installation Guidelines
Concrete Subfloors
• Concrete subfloors should meet requirements prescribed in ASTM
F710 “Standard Practice for preparing concrete floors to receive
Resilient Flooring.”
• Concrete subfloors must have a minimum compressive strength of
3000 psi and dry density of at least 100 pounds per cubic foot.
• Concrete subfloors must be dry, smooth, and free from dust,
solvent, paint, wax, grease, oil, asphalt sealing compounds and
other extraneous materials. The surface must be hard and dense,
and free from powder or flaking. Surface of the subfloor should be
flat within 3/16” in 10’.
• New concrete slabs must be thoroughly dry (at least six weeks)
and completely cured. Curing agents, surface hardeners and other
additives may cause adhesive bonding failure. These should be
removed by sanding or grinding.
• All concrete slabs must be checked for moisture before installing
material. Details for moisture testing can be found on our
website. The final responsibility for determining if the concrete is
dry enough for installation of the flooring lies with the floor
covering installer. ADURA®Flex must never be installed where
excessive moisture emissions may exist. Moisture emission from
subfloor cannot exceed 5 lbs. per 1,000 sq. ft. per 24 hours as
measured with the calcium chloride test in accordance with ASTM
F1869-04 or ASTM F2170 In Situ Relative Humidity not to exceed
80%. Mannington will not assume responsibility for floor covering
failure due to hydrostatic pressure or moisture vapor emission.
New concrete slabs must be thoroughly dry (at least six weeks)
and completely cured. Although the material is not susceptible to
damage from moisture, excessive subfloor moisture is an ideal
breeding ground for mold, mildew and fungus. All of which can
contribute to an unhealthy indoor environment. The Limited
Warranties do not cover discoloration from mold or from
flooding, leaking plumbing or appliances, water entering through
sliding glass doors or similar conditions.
• Holes, grooves, expansion joints and other depressions must be
filled with high-quality Portland based Patching & Leveling
Compound, troweled smooth, and feathered even with the
surrounding surface. Slab should be flat within 3/16” in 10’.
• Concrete floors with a hydroponic radiant heating system are
satisfactory, provided the temperature of the floor does not
exceed 85°F at any point. Before installing the flooring, the
heating system should be turned on to eliminate residual
moisture. Mannington does not recommend heated floor mats for
LVT products.
Existing Floor Coverings
To achieve maximum product performance, ADURA®Flex should not
be installed over existing resilient floor coverings.
• Ceramic tile should be made smooth by applying a cementitious
overlay such as patching or leveling compound.
• In the rare cases that the removal of the existing resilient floor
covering is not an option, the existing flooring must be covered
with a high quality cement based Embossing Leveler. Existing
sheet vinyl floors should not be heavily cushioned and consist of
only one layer.
Recommended Work Practices for Removal of Resilient
Floor
Coverings
WARNING: Do not sand, dry scrape, bead blast or mechanically
chip or pulverize existing resilient flooring, backing, lining felt,
asphaltic “cutback” adhesive or other adhesive. These products
may contain asbestos fibers and/or crystalline silica. Avoid
creating dust. Inhalation of such dust is a cancer and
respiratory tract hazard. Smoking by individuals exposed to
asbestos fibers greatly increases the risk of serious bodily harm.
Unless positively certain that the product is a non-asbestos-
containing material, you must presume it contains asbestos.
Regulations may require that the material be tested to
determine asbestos content. RFCI’s Recommended Work
Practices for Removal of Resilient Floor Coverings are a defined
set of instructions addressed to the task of removing all
resilient floor covering structures. These instructions should be
consulted with each installation. The link can be found on our
website. See mannington.com or go to rfci.com.