Installation Instructions

3
AD-62 Wet Set Adhesive
subFLoors anD PreParation
For detailed information on suboors and preparation,
please refer to supporting document Suitable Substrates
at www.congoleum.com. Certain requirements may apply
in order to prepare these substrates for resilient ooring.
Substrates covered with existing ooring may also be
acceptable for residential and light commercial applications.
Ensure that concrete suboors are suciently dry by
conducting moisture and pH tests. The suboor, regard-
less of the type must be at, smooth, clean, dry, structurally
sound and free of paint, old adhesive residue, wax, grease,
oil, solvent, curing and parting compounds and other
substances that could interfere with adhesion or the
performance of the ooring. Never use liquid adhesive
remover or solvent cleaners for removing old adhesive
residue or other substances on the suboor. These sub-
stances must be mechanically removed. Conduct bond
tests to conrm suitable adhesion to the substrate. The
atness of the suboor is particularly important for keep-
ing joints tight and in alignment when installing large format
tiles. Deviations in the suboor should not exceed 3/16”
in 10’ or 1/16” in 1’. Suboor deection should not exceed
1/360th of the span.
suitabLe substrates
anD surFaCe materiaLs
• Fully cured, dry concrete on all grade levels (Moisture
vapor emissions should not exceed 5 pounds (ASTM
F1869) or 80% RH (ASTM F2170) with a pH range
between 5 and 9.
• Approved suspended wood oors and underlayments.
• Cement-based self-levelling underlayments and
patching compounds.
• Prepared ceramic tile, marble and cement terrazzo
• Aluminum, steel and stainless steel.
• Radiant-heated suboors where the maximum surface
temperature of the oor does not exceed 85F (29ºC)
in any area.
The following existing oors may be suitable for residential
and light commercial applications only.
• Existing qualifying resilient sheet ooring-single layer, fully
adhered and well bonded.
• Existing vinyl composition tile (VCT) - single layer, well
bonded over on or above grade level only.
Note: Some previously manufactured vinyl oor covering
and asphalt “cutback” adhesive contain asbestos. For
preparation or removal of these products, refer to the
Resilient Floor Covering Institutes publication “Recom-
mended Work Practices for the Removal of Resilient Floor
Covering. These work practices must be followed. For a
copy of the recommended work practices, please contact:
Resilient Floor Covering Institute (RFCI) 401 East Jeerson
Street, Suite 102, Rockville MD 20850.
Warning: Do not sand, dry sweep, dry scrape, drill, saw,
beadblast or mechanically chip or pulverize existing resilient
ooring, backing, lining felt, asphaltic “cutback” adhesive
or other adhesive. These products may contain asbestos
bers or crystalline silica. Avoid creating dust. Inhalation of
such dust is a cancer and respiratory tract hazard. Smoking
by individuals exposed to asbestos bers 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 and
may govern the removal and disposal of the material. If you
must remove old ooring material contact the Resilient Floor
Covering Institute to obtain a copy of the Recommended
Work Practices for the Removal of Resilient Floor Covering.
Job site ConDitions
• Resilient ooring installation should be scheduled after
all other trades have completed their work.
• The HVAC systems must be in operation for at least
10 days prior to ooring installation and thereafter to
maintain a constant temperature. Portable heaters may
not provide adequate heat. Never use kerosene heaters.
• Proper acclimation of the room, suboor, ooring material,
adhesive and all installation accessory products is critical
to the success of the adhesive and ooring performance.
Installation over cold suboors will delay adhesive ash
time and dry time, eect the size of the oor and increase
the potential for indentation and or adhesive displacement.
The suboor temperature must be between 65F and 85ºF
(18ºC and 29ºC) at the time of installation.
• Acclimate the room(s) ooring and adhesive at a constant
temperature between 65ºF and 85ºF (18ºC and 29ºC) for
48 hours before, during and 72 hours after installation.
There after the room temperature should not exceed
90ºF (32º C) or fall below 55ºF (13ºC).
• Unopen cartons of ooring should be neatly stacked in
the room where they will be installed during the
acclimation period. Open cartons just prior to installation.
sPeCiaL instaLLation requirements
• All plank products should be installed with end joints
randomly staggered at least 8” apart. Avoid using pieces
less than 6” long at the end of the row.
• Planks and tiles can be combined on custom installations
• 18”x 36” tiles can be installed in an ashlar layout with a
9”, 12” or 18” drop pattern, depending on the desired
appearance. A square layout with all 4 corners lined up
is not recommended.
• 18”x 18” and 18”x 36” tiles have directional arrows printed
on the back. Turn tiles randomly in alternating directions
to achieve the best visual appearance.
• When installing ooring in a wet-set application with
AD-62, the ooring must be rolled with a 100 pound three
section roller immediately after completing each section
and while adhesive is still wet and again 1 hour later.
• Proper adhesive selection and application will ensure
good adhesion, tighter joints and reduce the potential
for indentation from rolling and static loads.