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INSTALLATION
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3/4"
Solid Plank & Strip Products - For Nail-Down Installation
ONLY
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INSTALLER/OWNER RESPONSIBILITY
Beautiful hardwood floors are a product of
nature and therefore, not perfect. Our wood floors are
manufactured in accordance with accepted industry standards,
which permit grading deficiencies not to exceed 5%.These grading
deficiencies may be of a manufacturing or natural type.
- The installer assumes all responsibility for
final inspection as to grade, manufacture and
factory finish. This inspection of all flooring
must be done before installation. Carefully
examine flooring for color, finish and quality
before installing it. The installer must use
reasonable selectivity and hold out or cut off
pieces with deficiencies, whatever the cause.
If material is not acceptable, do not install
it and contact the seller immediately.
- Prior to installation of any
hardwood-flooring product, the installer must
determine that the job-site environment and
the sub-surfaces involved meet or exceed all
applicable standards. Recommendations of the
construction and materials industries as well
as local codes must be followed. These instructions
recommend that the construction and subfloor
be dry, stiff and flat. The manufacturer declines
any responsibility for job failure resulting
from or associated with sub-surface, sub flooring
or job-site environmental deficiencies.
- Prior to installation, the installer/owner
has final inspection responsibility as to grade,
manufacture and factory finish. The installer
must use reasonable selectivity and hold out
or cut off pieces with deficiencies, whatever
the cause.
- Use of stain, filler or putty
stick for touch-up during installation should
be accepted as normal procedure.
- When flooring is ordered, 5%
must be added to the actual square footage needed
for cutting and grading allowance.
- Should an individual piece be
doubtful as to grade, manufacture or factory
finish, the installer should not use the piece.
- Use of appropriate products for correcting
subfloor voids should be accepted as a normal industry
practice.
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TOOLS & ACCESSORIES NEEDED
NOTE: IT IS EXTREMELY IMPORTANT TO USE THE PROPER
ADAPTERS AS WELL AS STAPLES OR CLEATS. IMPROPER
FASTENERS, MACHINES AND AIR PRESSURE CAN CAUSE SEVERE
DAMAGE. THE MANUFACTURER OF THIS FLOORING PRODUCT IS NOT
RESPONSIBLE FOR DAMAGE CAUSED BY USE OF IMPROPER TOOLS
OR MISUSE.
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- Broom
- Drill with 1/16"
drill bit
- Tape Measure
- Hammer
- Earplugs and safety glasses
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- Chalk line & chalk
- Recommended Hardwood
Flooring Cleaner
- Handsaw
- Nail Set
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- 6-7d screw-shank nails
- Moisture meter (wood,
concrete or both)
- 2" "Blind"
fastening machine
- Undercut or Jamb Saw
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PRE-INSTALLATION PROCEDURES FOR JOB SITE
INSPECTION
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- The building should be closed in with
all outside doors and windows in place.
All concrete, masonry, framing members,
drywall, paint and other "wet"
work should be thoroughly dry. The wall
coverings should be in place and the
painting completed except for the final
coat on the base molding. When possible,
delay installation of base molding until
flooring installation is complete. Basements
and crawl spaces must be dry and well
ventilated.
- Exterior grading should
be complete with surface drainage offering
a minimum drop of 3" in 10’to direct
flow of water away from the structure.
All gutters and downspouts should be
in place
- Solid wood flooring must
be installed on or above grade level.
Do not install in full bathrooms.
- Crawl spaces must be
a minimum of 24"(600 mm) from the
ground to underside of joists. A ground
cover of 6-8 mil black polyethylene
film is essential as a vapor barrier
with joints lapped six inches and taped.
The crawl space should have perimeter
venting equal to a minimum of 1.5% of
the crawl space square of footage. These
vents should be properly located to
foster cross ventilation (see figure
#1). Where necessary, local regulations
prevail.
- Subfloor must be checked
for moisture content using the appropriate
testing method.
- Permanent air conditioning and
heating systems should be in place and operational.
The installation site should have a consistent room
temperature of 60-75° F and humidity of 35-55% for
14 days prior, during and until occupied, to allow
for proper acclimation.
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STORAGE AND HANDLING
Solid wood flooring should be stored in the
environment in which it is expected to perform. Deliver the
materials to an environmentally controlled site. Materials
should be allowed to acclimate for 72 hours or as long as
necessary to meet minimum installation requirements for moisture
content. Acclimation within a closed carton may not be adequate
due to lack of air movement. Handle and unload with care. Store
in a dry place being sure to provide at least a four-inch air
space under cartons, which are stored upon "on-grade"
concrete floors. Flooring should not be delivered until the
building has been closed in with windows and doors in place and
until cement work, plastering and all other "wet" work
is completed and dry. Concrete should be at least 60 days old.
INSTALLATION APPLICATIONS
NOTE: MINOR OCCASIONAL NOISES IN MECHANICALLY
FASTENED FLOORS IS NOT ABNORMAL DUE TO STRUCTURAL MOVEMENT
CAUSED BY CHANGES IN ENVIRONMENTAL CONDITIONS. FOLLOWING THESE
INSTRUCTIONS CAN MINIMIZE THESE FACTORS BUT OFFER NO GUARANTEE
THAT THE FLOOR WILL NOT CREATE MINOR OCCASIONAL NOISES.
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General Information for Fastening
Machines:
Avoid striking the
edge of factory-finished products with
the fastener’s mallet. Edge crushing can
occur causing unsightly cracks and splinters.
Use a block to hammer against if necessary
(figure #2).
Faceplates should be covered with protective materials
to prevent damage to the surface of the flooring. Any
water damaged, swollen or delaminated sub flooring
materials will not hold staples properly and must be
repaired or replaced.
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General Information for Manual Fastening
Machines:
Improper adapter plate selection can cause
severe edge damage. Ascertain that the proper adapter has been
selected and properly installed for 3/4" flooring.
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General Information for Pneumatic
Fastening Machines:
Improper pressure settings and
failure to use proper adapters can cause severe damage
to the flooring. The correct adapter and air pressure
setting will properly set the fastener in the nail
pocket (figure #3). Low air pressures may fail to
properly set the staple and damage adjoining boards. Air
pressures set too high may cause damage to the tongue,
preventing installation of adjoining boards and cause
blisters on the face of the flooring. Make certain that
the compressor has a regulator in-line with the air hose
for proper adjustment. Set pressure at 70 PSI to begin
with and adjust until proper staple setting occurs.
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SUBFLOOR REQUIREMENTS MUST BE:
- CLEAN - Scrape, broom clean, and smooth. Free
of wax, paint, oil, sealers, adhesives, curing
agents and other debris.
- LEVEL/FLAT - Within 3/16"
in 10’and/or 1/8" in 6’. Sand high areas
or joints. Flatten low spots with layers of
15# builders felt, plywood or shims (not leveling
compounds).
NOTE: Laminated rosin paper or 15# builders
felt (tarpaper) acts as a moisture retarder
and may be used to reduce movement caused by
changes in subfloor moisture, thereby reducing
cupping and warping. (This is especially helpful
over crawl spaces and basements) In addition,
the use of these materials can give the flooring
a more solid feeling, reduce sound transfer,
prevent noise caused by minor irregularities
and debris, and make it easier to slide the
wood together across the surface of the subfloor.
Kraft paper may be used to make installation
easier but DOES NOT serve any other purpose.
- STRUCTURALLY SOUND - Nail or
screw any loose areas that squeak. Replace any
water-damaged, swollen or delaminated sub flooring
or underlayments. Avoid subfloors with excessive
vertical movement.
- DRY - Check moisture content of the subfloor
with the appropriate moisture meter.
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RECOMMENDED SUBFLOOR SURFACES
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- PREFERRED: 3/4" (19 mm) CDX grade
plywood 3/4"(23/32") OSB PS2
rated underlayment
MINIMUM: 5/8"CDX grade plywood
- Existing solid wood flooring
- Screeds
- T&G wood subflooring
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SUBFLOOR TYPES:
Note: Do not install solid wood plank or
strip over radiant heated subfloors or attempt to glue to a
subfloor of any type.
Wood Subfloors and Wood Structural Panel
Subfloors
Plywood:
Must be minimum APA grade rated sheathing or CDX
minimum. Oriented Strand Board (OSB):Must be PS2
rated installed sealed side down.
Do Not install over particleboard, waferboard, pressed wood or
fiberboard.
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Make sure existing floor or subfloor is
dry and well nailed or screwed down every 6" along
each joist to avoid squeaking or popping before the
floor is installed. The wood subfloor must not exceed
13% moisture content. Measure moisture content of both
subfloor and wood flooring to determine proper moisture
content with a reliable wood moisture meter (figure #4).
The difference between the moisture content of the wood
subfloor and the wood flooring must not exceed 4%.
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Optimum performance of hardwood floor covering
products occurs when there is little horizontal or vertical
movement of the subfloor. The MINIMUM subfloor recommendations
described above are for 19.2" O/C joist spacing with
minimum recommended spans. If the subfloor has excessive
vertical movement (deflection) before installation of the
flooring it is likely it will do so after installation of the
flooring is complete. Deflection may cause the floor to become
loose creating a noisy floor or cause premature finish wear.
Avoid installations over sub floors that do not meet this
minimum criterion. As flooring manufacturers we are unable to
evaluate each engineered system. Other spacing and spans as well
as their engineering methods are the responsibility of the
builder, engineer, architect or consumer who is better able to
evaluate the expected result based on site related performance.
All underlayment panels should be spaced
1/8" apart to insure adequate expansion space or have the
space cut around the perimeter using a circular saw. T&G
panels normally have built in expansion; DO NOT cut around their
perimeter. When installing over existing wood floors parallel
with the flooring, it may be necessary to install an additional
layer of plywood to stabilize the flooring or install the wood
floor at right angles. Applicable standards and recommendations
of the construction and materials industries must be met or
exceeded.
Concrete Slabs
Solid flooring can be installed
over concrete once the appropriate nailing surface
has been installed. The concrete must be of high
compressive strength. All concrete subfloors should
be tested for moisture content (Figure #5). Visual
checks are not reliable. NOTE: Test several areas,
especially near exterior walls and walls containing
plumbing.
NOTE: Test several areas, especially near exterior walls and
walls containing plumbing.

A "DRY" SLAB, AS DEFINED BY THESE
TESTS CAN BE WET AT OTHER TIMES OF THE YEAR. THESE TESTS DO NOT
GUARANTEE A DRY SLAB. ALL CONCRETE SLABS SHOULD HAVE A MINIMUM
OF 6 MIL POLY FILM MOISTURE BARRIER BETWEEN THE GROUND AND THE
CONCRETE.
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Subfloor Systems
Bonded:
Install suitable moisture retardant followed
by a plywood subfloor with a minimum thickness of 3/4".
Allow 1/2" expansion space around all vertical objects and
1/8" between all flooring panels. The panel must be
properly attached to the subfloor using a minimum of one
fastener per square foot and more if necessary. Use pneumatic or
powder actuated fasteners. Do not hand nail the subfloor with
concrete nails. Install a moisture retardant barrier with joints
lapped 6" and begin installation of flooring using 1
1/2" fasteners.
Floating:
Install a suitable moisture retardant
followed by a plywood subfloor with a minimum of 3/8".
Allow 1/2" expansion space around all vertical objects and
1/8" between all flooring panels. Install a second layer of
3/8" plywood at a right angle to the previous panels,
offsetting the joints 2’. Staple together with staples that
will not penetrate the first layer of subfloor with a crown
width of 3/8" or more. Install a moisture retardant barrier
with joints lapped 6" and begin installation of flooring.
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GENERAL
INSTALLATION TIPS
Floor should be installed
from several cartons at the same time to ensure good
color and shade mixture. Be attentive to staggering the
ends of boards at least 6", when possible, in
adjacent rows (figure #6). This will help ensure a more
favorable overall appearance of the floor. Large spans
in areas of high humidity may require the addition of
internal or field expansion. This can be accomplished by
using spacers, such as small washers, every 10-20 rows
inserted above the tongue and removed after several
adjoining rows have been fastened.
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STEP 1: DOORWAY AND
WALL PREPARATION
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Undercut door casings.
Remove any existing base, shoe mold or doorway
thresholds. These items can be replaced after
installation. All door casings should be notched out
(figure #7) or undercut to avoid difficult scribe cuts.
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STEP 2: ESTABLISH A STARTING POINT -
WALL-TO-WALL INSTALLATION
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- Installation parallel to the longest
wall is recommended for best visual
effects, however, the floor should be
installed perpendicular to the flooring
joists unless subfloor has been reinforced
to reduce subfloor sagging.
- Find appropriate subfloor
from "Subfloor Type" section
in this instruction manual. If a moisture
retardant material is to be used, such
as Laminated Rosin Paper (see NOTE,
Subfloor Requirements), install this
material before proceeding, lapping
joints 6" and stapling if necessary.
- Measure the width of
the product being installed. For random
or alternate width products, use the
widest plank for the first row.
- Add 1" to allow
for 3/4" expansion and the width
of the tongue.
- Using this measurement, in at least
two places, measure out equal distance from the
starting wall and 12" -18" from the
corners (figure #8) and snap a chalk line.
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STEP 3: INSTALLING FIRST ROWS - WALL-TO-WALL
INSTALLATION
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NOTE: Always end glue wide width (4" or more)
planks with a PVA wood glue.
- Use the longest, straightest boards
available for the first two rows.
- Align tongue of first
row on chalk line. The groove should
be facing the starting wall.
- Pre-drill the nail holes 1" from
back (groove) edge, 1"-2" from each end,
and at 6" intervals at a 45° angle down
through the nailing "pocket" on top of the
tongue (figure#9).
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- Face-nail the groove side where pre-drilled.
When complete, blind-nail at a 45° angle
through the tongue of the first row.
Fasten using 6 or 8d nails. Countersink
nails to ensure flush engagement of
groove. Avoid bruising the wood by using
a nail set to drive the nails the last
1/2" into the tongue.
- Continue blind nailing
using this method with following rows
until stapler or nailer can be used.
- End-joints of adjacent rows should be
staggered a minimum of 6" to ensure a more
favorable overall appearance.
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Beginning rows may be blind-nailed where
clearance allows using a pneumatic finish nailer with 15
gauge, 1 1/2" (minimum) nails in lieu of above.
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STEP 2 & 3: CENTER TO WALL INSTALLATION
- Snap a chalk line down the center of the room.
- Install a sacrificial row that
extends the entire length of the room on the
centerline.
- Install three rows of flooring.
- Remove the sacrificial row and
insert a slip tongue (spline) in the open groove.
- Always glue and nail the slip tongue in
place.
STEP 4: RACKING THE FLOOR
- "Dry" lay (rack) materials to cover
approximately 2/3 of the room. Begin dry laying
(racking) approximately 6" from the edge
of the previously installed rows. Avoid pulling
boards too tightly together on the sides, as
they must move freely when fastening begins.
- Mark the final board in each
row and cut to proper length allowing for expansion.
- Visually inspect flooring, setting
aside boards that need to have natural character
flaws cut out.
- Use these boards for starting and finishing
row after objectionable characteristics have been removed.
STEP 5: INSTALLING THE FLOOR
- Fasten a sacrificial board to the floor. Check
for surface damage, air pressure setting, tongue
damage, etc. before proceeding. Make all adjustments
and corrections before installation begins.
Once proper adjustments have been made, remove
and destroy the board.
- Begin installation with several
rows at a time, fastening each board with at
least two fasteners, 8-10" apart and 1-1
1/2" from the ends (to avoid splitting).
Tighten boards as necessary to reduce gaps before
fastening.
- End-joints of adjacent rows should
be staggered 6' when possible to ensure a more
favorable overall appearance.
- The last 1-2 rows will need to
be face-nailed where clearance does not permit
blind nailing with stapler or brad nailer. Pre-drill
and face-nail on the tongue side following the
nailing pattern used for the first row.
- Rip final row to fit and face-nail. If the
final row is less than 1" in width, it should first be
glued to the previous UNINSTALLED row and the two joined
units should be face nailed as one.
STEP 6: COMPLETE THE JOB
- Clean the floor with the recommended wood flooring
cleaner. (Dura-Luster No-Wax Cleaner)
- Re-install any transition pieces
that may be needed, such as Reducer Strips,
T-moldings, or Thresholds. These products are
available pre-finished to blend with your flooring.
- Re-install all base and/or quarter
round moldings. Nail moldings into the wall,
not the floor.
- Leave warranty and floor care
information with the owner. Advise them of the
product name and code number of the flooring
they purchased.
- To prevent surface damage avoid
rolling heavy appliances or furniture on the
floor.
- Use plywood, hardboard or appliance lifts if
necessary.
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MOLDINGS
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REDUCER STRIP: a teardrop shaped molding used around
fireplaces, doorways, as a room divider, or as a
transition between wood flooring and adjacent floor
coverings that are less thick. Fasten down with
adhesive, small nails or double-faced tape. |
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THRESHOLD: a molding undercut for use against sliding
door tracks, fireplaces, carpet, ceramic tile, or
existing thresholds to allow for expansion space and to
provide a smooth transition in height difference. Fasten
to subfloor with adhesive and/or nails through the heel.
Predrill nail holes to prevent splitting. |
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STAIR NOSING: a molding undercut for use as a stair
landings trim, elevated floor perimeters, and stair
steps. Fasten down firmly with adhesive and nails or
screws. Predrill nail holes to prevent splitting. |
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QUARTER ROUND: a molding used to cover expansion space
next to baseboards, case goods, and stair steps.
Predrill and nail to the vertical surface, not into the
floor. |
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COMBINATION BASE AND SHOE: a molding used when a base is
desired. Used to cover expansion space between the floor
and the wall. Predrill and nail into the wall, not the
floor. |
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T-MOLDING: a molding used as a transition piece from one
flooring to another of equal height or to gain expansion
spaces. Fasten at the heel in the center of the molding.
Additional support may need to be added to the heel of
the molding dependent upon the thickness of the goods
covered. |
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Other
HARTCO links:
Terms
and Definitions, Why
Hardwood?, Floor
Comparison Chart, Pattern
Plus Patterns, Overview
and History, Corporate
Fact Sheet
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