Installation Guide

For Pergo Outlast+ Only
Revised: 3-Jan-2018
c. High areas, such as peaked joints in the subfloor or other
ridges in the wood subfloor must be sanded or planed
and low areas repaired or filled with a Portland cement
and latex based leveling compound or covered with a
rigid underlayment. When using a leveling compound, be
sure to follow the manufacturer’s recommendations, and
allow the compound to dry completely before starting to
install the Pergo Outlast+ Flooring. See Subfloor
Requirements/ General, section 7, paragraph a.
d. Pergo Moisturbloc
™
or equivalent polyethylene film is not
required on the top of a wooden floor or wood subfloor.
These products are only required on concrete subfloors.
e. When the subfloor is wooden, Pergo Outlast+ laminate
flooring can be installed over parquet, planks or other wood
flooring or wood based flooring installed on the wood
subfloor.
f. If you have questions or doubts about how to proceed in
your situation, call us at 1-800-33-PERGO (1-800-337-
3746).
IMPORTANT NOTE: During a dry season, you may find that you
get an acceptable moisture reading even if other job site
conditions are not acceptable. Before installing Pergo Outlast+
floors, you must be sure that your job site conditions as well as
your moisture readings are acceptable.
g. Should excessive moisture be present or if the job site
conditions are not correct consult a waterproofing or flooring
contractor for further moisture testing or abatement before
installing a Pergo Outlast+ floor.
9. CONCRETE AND T E RRAZZO SUBFLOOR
REQUIREMENTS - When installing Pergo Outlast+ flooring,
the maximum acceptable moisture levels must be
considered. When using a calcium chloride moisture test for
concrete subfloors (ASTM 1869), values must be ≤ 5
lbs/1000ft2/24-hr or <80% RH with an in situ probe (ASTM
F2170).
a. Concrete and terrazzo release moisture long after it is
poured and can transfer dampness from wet soil and the air,
i.e., elevated concrete floors in apartment and office
buildings. New concrete must cure for 60 days before any
flooring is installed.
b. Check the floor for flatness. If the concrete or terrazzo
subfloor has excessive voids or variations, a leveling
compound can be used to bring it up to specifications. (See
Subfloor Requirements/General.) Low areas greater than
3
⁄16"
in a 10' radius should be filled in using a Portland cement
and latex-based floor leveler. Follow the manufacturer’s
directions for mixing the filler, and be sure to allow it to dry
completely. High spots or ridges above
3
⁄16" within a 10'
radius (or
1
⁄16 of an inch within a 3 foot radius) must be
ground down.
c. When installing Pergo Outlast+ over a concrete or
terrazzo subfloor you must use a 6-mil. (.15mm) non-
recycled (100% virgin) resin polyethylene film such as
Pergo Moisturbloc
TM
to form a vapor barrier. Pergo
Outlast+ has attached underlayment foam, so use only a
vapor barrier with this product when installing over a
concrete subfloor. The edges of the vapor barrier must
overlap by at least 8 inches (200mm) or when using an
equivalent, non-recycled, polyethylene film, follow the
manufacturer’s direction for installation. Vapor barrier
underlayments are required over all subfloors containing
concrete, even if the concrete is covered by vinyl,
linoleum VCT (resilient tile), terrazzo or ceramic tile.
d. Evaluation of moisture conditions for concrete or terrazzo
subfloors. (Also see Job Site Evaluation–exterior and
interior moisture conditions–section 6.) If there is excessive
moisture in the concrete or the job site conditions are not
correct then Pergo Outlast+ flooring cannot be installed.
e. When a resilient tile is installed over concrete subfloors and
there are visible salt deposits at any of the joints of the tile
there is reason to believe that excessive moisture is present.
f. A precise moisture reading can be obtained using the
calcium chloride test. Three tests must be used for the first
1000 sq. ft. and one additional test for each 1000 sq. ft. or
fraction thereof (ASTM 1869-03). The results of the test
must not exceed 5 lbs/1000ft2/24-hr (not to exceed five
pounds of water vapor being emitted from 1000 square
feet of flooring over a period of 24 hours).
g. Alternatively, acceptable concrete moisture readings include
<80% RH with an in situ probe (ASTM F2170).
h. Do not install Pergo Outlast+ flooring in a room with a floor
drain.
i. Do not install Pergo Outlast+ flooring over a floor with a
sump pump. Pergo Outlast+ flooring must not be installed
over any floor that has a sump pump, i.e. should there be
a floor at a below grade or an on-grade level concrete slab
in the home and a sump pump is located in that below-
grade level flooring or in the on-grade level slab, then
Pergo Outlast+ flooring cannot be installed anywhere on that
floor.
IMPORTANT NOTE: During a dry season, you may find that you
get an acceptable moisture reading even if other job site
conditions are not acceptable. Before installing Pergo Outlast+
floors, you must be sure that your job site conditions as well as
your moisture readings are acceptable.
j. Should excessive moisture be present or the job site
conditions are not correct, consult a waterproofing or
flooring contractor for further moisture testing or abatement
before installing a Pergo Outlast+ floor.
10. OTHER SUBFLOOR R E QUIREM E N T S
a. Vinyl sheet goods, linoleum and resilient (VCT) tiles: Old
vinyl and linoleum tiles or sheet goods normally do not
need to be removed. Some older vinyl sheet goods and tile
contain asbestos. Should you choose to remove these
older floor coverings, consult a floor covering retailer or the
manufacturer of the vinyl floor covering regarding the
contents. Should it contain asbestos special precautions
must be taken for your safety.
b. When Pergo Outlast+ flooring is installed over vinyl,
linoleum sheet goods, over resilient tiles or ceramic tiles
and the subfloor is concrete, a vapor barrier is always
required.
c. Ceramic tiles and terrazzo: Old ceramic tiles normally
don’t need to be removed. Usually, Pergo Outlast+
flooring can be installed directly over ceramic tiles and