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
Concrete Subfloors
• Concrete subfloors should meet requirements prescribed in
ASTM F710 “Standard Practice for preparing concrete
floors to receive Resilient Flooring.”