Installation Instructions 3/4" Solid Hardwood Plank & Strip Products
for mechanically fastened, staple, nail or cleat applications

Installation Systems \ Hardwood\ Installation Instructions 3/4" Solid Hardwood Plank & Strip Products
for mechanically fastened, staple, nail or cleat applications
3/4" Solid Hardwood Installation PDF


Recommended Cleaner: Bruce Hardwood & Laminate Floor Cleaner


Recommended Cleaner: Armstrong Hardwood & Laminate Floor Cleaner

Robbins - Recommended Cleaner: Armstrong Hardwood & Laminate Floor Cleaner

I. GENERAL INFORMATION

Owner/Installer 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. When flooring is ordered, 5% must be added to the actual square footage needed for cutting and grading allowance (10% for diagonal installations).

II. PREPARATION

Storage and Handling
Solid hardwood flooring should be stored in the environment in which it is expected to perform. Deliver the materials to an environmentally controlled site. The wood subflooring must not exceed 13% moisture content. Using a reliable wood moisture meter, measure and document the moisture content of both subfloor and hardwood flooring to determine proper moisture content. The difference in moisture content of the wood subfloor and the hardwood flooring must not exceed 4% (3% for plank). Acclimate the hardwood flooring on or off the job, as necessary, to meet these requirements. 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 enclosed, with windows and doors in place and until cement work, plastering and other "wet" work is complete and dry. Concrete should be at least 60 days old.



Job-Site Conditions
Figure 1


Subfloor Conditions Subfloors with Radiant Heat
Note: Do not install this product over subfloors with Radiant Heat. Tools & Accessories Needed
NOTE: IT IS EXTREMELY IMPORTANT TO USE PROPER ADAPTERS, FACE PLATES, 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. III. SUBFLOOR/UNDERLAYMENT REQUIREMENTS

Note: Solid wood flooring can be fastened to most existing flooring materials providing they can be penetrated with the fastener and the subfloor/underlayment materials meet or exceed the recommended subfloor/underlayment requirements. Laminated rosin paper or #15 builders felt (tar paper) 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 the installation easier but DOES NOT serve any other purpose.

Wood Subfloors and Underlayment
General: The wood subflooring materials must not exceed 13% moisture content. Using a reliable wood moisture meter, measure moisture content of both subfloor and the hardwood flooring to determine proper moisture content. The difference between the moisture content of the wood flooring and the hardwood flooring must not exceed 4% for strip and 3% for plank flooring. When installing parallel to the floor joists it may be necessary to stiffen the subfloor system by installing an additional minimum of 3/8" (9.5 mm) approved wood underlayment. Applicable standards and recommendations of the construction and materials industries must be met or exceeded.

NOTE: As flooring manufacturers, we are unable to evaluate each engineered joist/subfloor system. Spacing and spans, as well as their engineered methods, are the responsibility of the builder, engineer, architect or consumer who is better able to evaluate the expected result based on site-related conditions and performance. The general information provided below describes common, non-engineered joist/subfloor systems. Engineered flooring joist/subfloor systems may allow for wider joist spacing and thinner subflooring materials.

Wood Structural Panel Subfloors and Underlayment
(Non-Engineered)
Structural panels/underlayment must be installed sealed side down. When used as a subfloor allow 1/8" (3.2 mm) expansion space between each panel. If spacing is inadequate, cut in with a circular saw. Do not cut expansion space on tongue and groove panels.
Solid Wood Subfloors
Concrete (Requires additional subfloor)
NOTE: We encourage the use of a plywood subfloor when installing solid over a concrete slab. Some adhesive manufacturers have had substantial success with direct glue applications (no plywood subfloor) using a variety of different adhesives and moisture retardant systems. Follow the adhesive manufacturer’s recommendations and check their warranty coverage. In a situation where you must direct glue to concrete please review the adhesive manufacturer’s recommendation for proper application, proper adhesive and correct trowel notch and spread rate. Solid hardwood flooring makes it impossible to always guarantee perfectly straight pieces as these characteristics are inherent to the product. This type of characteristic is not considered a defect therefore when installing using the glue down installation system this will require a higher waste factor (20%).

Concrete Moisture Tests
All concrete subfloors should be tested, and results documented, for moisture content. Visual checks may not be reliable. Test several areas, especially near exterior walls and walls containing plumbing. Acceptable test methods for subfloor moisture content include:

Tramex Concrete Moisture Encounter Meter (Figure 2)
Moisture readings should not exceed 4.5 on the upper scale.
(Figure 2 shows an unacceptable reading over 4.5)



Note: The following tests are required in commercial applications. Either or both tests are acceptable.
• Calcium Chloride Test (ASTM F 1869): The maximum moisture transfer must not exceed 3 lbs./1000 ft2 in 24 hrs.
with this test.

• RH Levels in Concrete Using In-situ Probes (ASTM F 2170-02) should not exceed 75%.

“DRY” CONCRETE, AS DEFINED BY THESE TESTS CAN BE WET AT OTHER TIMES OF THE YEAR. THESE TESTS DO
NOT GUARANTEE A DRY SLAB. ALL NEW CONSTRUCTION CONCRETE SLABS SHOULD HAVE A MINIMUM OF 10 MIL
POLY FILM MOISTURE BARRIER BETWEEN THE GROUND AND THE CONCRETE.

Wood/Concrete Subfloor Systems

Fastened to concrete:
Concrete must be of high compressive strength, 3000 PSI or better. Install a suitable moisture retardant followed by a plywood subfloor with a minimum thickness of 3/4" (19 mm). Allow 1/2" (13 mm) expansion space around all vertical objects and 1/8" (3 mm) between all flooring panels. In general, smaller panels [less than 4' x 8' (1.2 m x 2.4 m)] oriented at 45 degrees (preferred) offer better results. 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" (15 cm) and begin installation of flooring using 1 1/2" (4 cm) fasteners.

Floating subfloor :
Install a suitable moisture retardant followed by a plywood subfloor with a minimum thickness of 3/8" (9.5 mm) [1/2" (13 mm) preferred]. Allow 1/2" (13 mm) expansion space around all vertical objects and 1/8" (3 mm) between all flooring panels. Install a second layer of plywood, the same thickness, at a right angle to the previous panels, offsetting the joints 2' (61 cm). Staple together with staples that will not penetrate the first layer of subfloor. The staples should have a crown width of 3/8" (9.5 mm) or more. Install a moisture retardant barrier with joints lapped 6" (15 cm) and begin installation of flooring using 1-1/2" (4 cm) fasteners.

Screeds/sleepers:
Solid wood flooring exceeding 4" (10 cm) and above in width cannot be installed directly to screeds. Screeds should be installed 9" (23 cm) apart in rivers of adhesive, at right angles to the flooring to be installed. Do not begin installation until all adhesives are properly cured. Install moisture retardant over the screeds prior to installation of the flooring. IV. INSTALLING THE FLOOR

General Installation Tips General information for "Blind Fastening" Machines Set pressure at 70-75 PSI to begin with and adjust until proper fastener setting occurs.




NOTE: SPECIAL INSTRUCTIONS FOR PLANK FLOORING
Seasonal distortion (shrinkage/cupping) in wide width flooring [4" (10 cm) and over] may be reduced by gluing the
flooring to the subfloor, in addition to the use of mechanical fasteners. The installer should be reminded that adhesives
used for this purpose will not perform their function when used in conjunction with a moisture retardant. Glue-assisted
applications will not be satisfactory without direct contact with the subfloor. The glue should be a premium grade
urethane construction adhesive applied in a serpentine pattern to the back of the hardwood as noted in Figure 5.




STEP 1: Doorway and Wall Preparation


STEP 2: Establishing a Starting Point
STEP 3: Installing First & Second Rows - Starting from Wall


STEP 2 - 3 Alternative: Installing the First & Second Rows - Starting from Center of Room
STEP 4: Dry Lay (Racking) the Floor
  • Use these boards for starting and finishing rows after objectionable characteristics have been removed.



    STEP 5: Installing the Floor
    STEP 6: Complete the Installation

    V. Transitions and Wall Moldings

    Reducer Strip: A teardrop-shaped molding used around fireplaces, doorways, as a room divider, or as a transition between wood flooring and adjacent thinner floor coverings. Fasten down with adhesive, small nails or double-faced tape.

    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.

    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.

    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.

    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.

    T-Molding: A molding used as a transition piece from one rigid flooring to another of similar 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. Do not use this molding as a transition to carpet.



    INSTALLERS - ADVISE YOUR CUSTOMER OF THE FOLLOWING
    Seasons: Heating and Non-heating

    Recognizing that hardwood floor dimensions will be slightly affected by varying levels of humidity within your building, care should be taken to control humidity levels within the 35-55% range. To protect your investment and to assure that your floors provide lasting satisfaction, we have provided our recommendations below.
    NOTE: Final inspection by the end-user should occur from a standing position.

    FLOOR REPAIR
    Minor damage can be repaired with a Armstrong™, Bruce® or Robbins® touch-up kit or filler. Major damage
    will require board replacement, which can be done by a professional floor installer.


    3/4" Solid Hardwood Installation PDF