Installation & Assembly

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GENERAL INFORMATION
These installation specifications are for fully adhered ADURA®Flex.
All recommendations are based on the most recent available
information. All instructions and recommendations must be
followed for a satisfactory installation.
Acclimate flooring and the room at a constant temperature
between 65°F and 85°F for 48 hrs. prior to and during installation.
Temperature of the room should not go below 55°F after 48 hours
after installation and anytime thereafter.
Install only after the jobsite has been cleaned and cleared of other
trade apparatus that may damage a finished installation.
Mix and install product from several different cartons to achieve
maximum variation.
All subfloor/underlayment patching must be done with a non-
shrinking, water-resistant, high-quality Portland cement patching
and leveler compound.
Never install ADURA®Flex products over residual asphalt-type (cut
back) adhesive. It can bleed through the new flooring. Residual
asphalt-type adhesive must be completely removed and covered
with underlayment plywood or high quality latex underlayment.
ADURA®Flex are adhered with Mannington MT-711. MT-711 is a
solvent-free, acrylic based, pressure-sensitive adhesive.
SUBFLOOR INFORMATION
Careful and correct preparation of the subfloor is a major part of a
satisfactory installation. Roughness or unevenness of the subfloor
may telegraph through the new floor covering, resulting in an
unsightly surface and excessive wear on high spots. Subfloor should
be flat within 3/16” in 10’.
CAUTION: Some types of nails, such as common steel nails, cement
coated or resin- or rosin-coated nails, may cause a discoloration of
the vinyl floor covering. Use only non-staining fasteners with
underlayment panels. The procedure of gluing and screwing
underlayment panels is not recommended. Solvent-based
construction adhesives are known to stain vinyl floor coverings. All
responsibility for discoloration problems caused by fastener staining
or the use of construction adhesive rests with the underlayment
installer.
Wood Subfloors
All wood floors must be suspended at least 18” above the ground.
Adequate cross-ventilation must be provided, and the ground
surface of a crawl space must be covered with a suitable vapor
barrier. Wood subfloors directly on concrete or installed over
sleeper construction are not satisfactory for installation. Wood
subfloors must be covered with a minimum 1/4” or heavier
underlayment rated panel to assure successful finished flooring
installation. All wood substrate should be smooth, flat,
structurally sound and free of deflection (meaning no up and
down movement).
Underlayment:
Many times, wood panel subfloors are damaged during the
construction process or are not of underlayment grade. These
panels must be covered with an approved underlayment.
Underlayment panels are intended to provide a smooth surface
on which to adhere the finished floor covering. It must be
understood that underlayment panels cannot correct structural
deficiencies. Particleboard, chipboard, construction-grade
plywood, any hardboard or flakeboard are not recommended for
underlayment. All have inadequate uniformity, poor dimensional
stability, and variable surface porosity. Mannington will not
accept responsibility for adhered installation over these subfloors.
In all cases, the underlayment manufacturer or underlayment
installer is responsible for all underlayment warranties. If the
surface of the wood subfloor is not smooth, a 1/4” underlayment
panel should be installed over the subfloor. Any panels selected as
an underlayment must meet the following criteria:
o Be dimensionally stable
o Have a smooth, fully sanded face so the graining or texturing
will not show through
o Be resistant to both static and impact indentation
o Be free of any surface components that may cause staining
such as plastic fillers, marking inks, sealers, etc.
o Be of uniform density, porosity and thickness
o Have a written warranty for suitability and performance from
the panel manufacturer or have a history of proven
performance
ADURA
®
Flex Installation Guidelines

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