1115 Vista Park Drive ● Suites C&D ● Forest, VA 24551-0289 ● 800.682.5698 ● 434.525.5252 ● www.nydreeflooring.com
H. It is extremely important to immediately remove excess adhesive while it is still fresh. Use mineral spirits (low odor, no residue) and a
clean, white, cotton cloth as the flooring is being installed or use Sentinel 922
Adhesive Remover Wipes. If solvents are used to facilitate
partially cured mastic removal (under 24 hours), they must be wiped off surface promptly when mastic softens. Approved solvents to remove
partially cured adhesive include Goof Off
®
, mineral spirits, or equivalent. Do not use acetone, ketones, ethyl acetate, methylene chloride, or
lacquer thinners to remove mastic as they will damage the flooring. A stiff plastic putty knife may be helpful to remove large globs of glue.
Many have found that a Mr. Clean
®
Magic Eraser
®
is helpful at removing partially cured or cured smudges. Cured adhesive (over 24 hours)
is almost impossible to remove. As a last resort, Oil Flo 141 available through Taylor Tools (www.taylortools.com) or a local
distributor has been found to effectively dissolve cured MRA1585 adhesive.
I. Roll floor with 150 pound (70kg) roller (100 pound plus 50 pound attachment) 30 minutes after spreading adhesive, but not later than 60
minutes. Be sure to roll in both directions (with plank grain and across grain). Make sure that the roller is clean and free of debris. Also
make sure all adhesive is cleaned from the flooring surface prior to rolling. If there are concerns that the flooring is not in complete contact
with the adhesive, weighting the floor while the adhesive cures is very effective.
PREPARATION – STAPLE DOWN METHOD
Note: Prior to stapling, it is mandatory to “dry lay” a portion of the initial course to verify proper layout and to visually inspect the flooring.
Verify that the flooring is the correct species, color, width, grain, finish (gloss level) and quality (fit) prior to installation. If there is any
doubt, do not install the flooring. Contact Nydree Flooring immediately. Nydree Flooring cannot be responsible for installation of the
wrong type of flooring or for installing obvious defects.
IMPORTANT: The installer is responsible for assuring that the pneumatic stapler is properly adjusted to the thickness of the Essentials flooring
and is properly functioning. Fastener(s) MUST NOT be over driven to cause damage to the board such as nail dimples, chipping,
broken or split tongues, peaking or create audible squeaks, crackling or popping sounds. Failure to properly seat fasteners can
interfere with drawing the board edges together. Confirm that all installation equipment is functioning properly prior to starting the
installation. Nydree is not responsible for damage due to incorrect use of fasteners or pneumatic nailers.
• Nydree recommends using the Bostich
®
EHF1838K, 18ga floor stapler when installing Essentials flooring in a nail down installation
method over wood subflooring. Bostich 18ga 7/32” narrow crown finish staples in lengths from 1 ¼” to 1 ½” are recommended when
affixing Essentials engineered wood flooring to wood subflooring with wood framing.
Bostich Staple Part Numbers:
SX50351-1/4G Leg Length: 1 ¼” SX50351-3/8G Leg Length: 1 ⅜” SX503511/2G Leg Length: 1 ½”
• 1” length Bostich SX50351G 18 ga 7/32” staple fasteners can be alternatively used when nailing Essentials flooring to a single wood
subflooring system attached to concrete. When performing this installation method using 1” fasteners, space the fasteners 1-2” (3-5 cm)
from each end and at 3-4” (8-10 cm) intervals.
• CD Exposure 1 plywood and OSB Exposure 1 subfloor panels are appropriate subfloor materials (grade stamped US PS1-95). Solid
board subfloors should be 1” x 6” (2.5 x 15 cm) nominal, Group 1 dense softwoods, #2 Common, Kiln-Dried. Minimum single layer panel
subfloor thickness is 5/8” (15.9mm) plywood or 23/32” (18.3mm) OSB on 16” (40.6 cm) on center joists (APA Sturd-I-Floor stamped). The
flooring must run perpendicular to the floor joists, or ½” (13mm) additional subfloor thickness is required. See NWFA Installation
Guidelines for information on other joist spacing and panel thickness requirements, engineered flooring systems, etc. Wood subfloor
moisture content should be less than 12%.
• Verify that the wood substrate is flat to within 3/16” in 10 ft. (5mm per 3m). Sand and/or fill as necessary. The substrate must be free from
peaked subfloor panel edges, protruding fasteners, holes, voids, ridges, projections and other defects impairing performance or
appearance.
INSTALLATION – STAPLE DOWN METHOD
A. Over the subfloor, install an approved vapor retarder. An acceptable vapor retarder is a vapor resistant material, membrane or covering
with a vapor permeance (perm rating) of greater than or equal to 0.1 and less than or equal to 10 when tested in accordance with ASTM E-
96 Method. Nydree recommends using Fortifiber Aquabar
®
“B” as the preferred vapor retarder. Follow the installation guidelines for the
manufacturer of the vapor retarder being used.
B. Strike a chalk line at plank width plus 1/2” (13mm). This provides for a required 1/2” (13mm) expansion space. Adjust line
accordingly if wall is not square and straight in relation to the rest of the area. Additionally, allow 1/2” (13mm) expansion space
around the perimeter of the room and at all vertical obstructions. For all courses of flooring stagger the end butt joint location at
least 6” (15 cm). End joints from one row should never line up with end joints from another row, unless a pattern is being laid.
C. Groove oriented to the wall, pre-drill and face nail ½” (13mm) from groove edge using 6d finish nails; 2” (5 cm) from the end and at
6” (15cm) intervals. Avoid using pneumatic nailers for face nailing as this may damage the factory finish and wood. Countersink
heads and fill hole with matching putty stick or cover with base molding.
D. Pre-drill and blind nail at a 45
o
angle directly above the tongue of the plank in the 1st and 2nd row, if necessary. (NOTE: The Bostich
EHF1838K Stapler is trigger activated and requires less space along walls when blind nailing as compared to mallet nailers. Always
blind nail when possible). Blind nail 1-2" (3-5 cm) from each end and at 4-6" (10-15 cm) intervals. Countersink nails so groove engages
properly with the next row.
E. For the balance, use Bostitch Stapler EHF1838K with staple recommended above.
F. Proper air pressure for correctly seating fasteners can vary from job to job and the installer must set air pressure, among other, to the
optimal psi for the installation. Typical air supply to the stapler is 70-90 psi, but should be adjusted as needed. Use a few sacrificial
planks to adjust the air so the crown of the fastener sets flush above the tongue of the engineered flooring. DO NOT over drive or under
drive the installation fasteners. Carefully inspect as you install the flooring in good lighting to assure the flooring remains free of nailing
damage including, but not limited to, nail dimples.
G. Install each plank with staples 1”-2” (3-5 cm) from each end and every 4 to 6 inches (10-15 cm) along the length. Failure to follow the
required fastening schedule can result in performance issues such as squeaks and gaps.
H. The last two rows will also need to be face nailed as described above.
I. Finished flooring must be protected from abuse by other trades. Use a recognized wood floor protective overlay such as Fortifiber
Fortiboard
TM
, or equivalent. Do not use plastic or poly. Make sure the floor has been cleaned thoroughly (swept, vacuumed and dust
mopped) prior to protecting, so that the flooring surface will not be scratched by debris. If the floor is covered, consider covering the
entire flooring installation, since some species are light-sensitive and uncovered areas may change color. When taping paper or
sheets together, tape them to each other, not to the floor. Some flooring material (attic stock) should be set aside in case future
repairs are needed.
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