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«ATTENTION! READ BEFORE INSTALLING! COLOR VARIATION This flooring is a natural product and color variations are to be expected. For best visual ...»

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Drop & Lock Glueless Floating Floor

Installation Instructions



This flooring is a natural product and color variations are to be expected. For best visual effect, shuffle planks from several

cartons and do not install boards varying greatly in color next to one another.


As relative humidity varies in different parts of the country, acclimation of the flooring prior to installation is the most important precaution to take in order to insure a successful installation. Proper acclimation is necessary to adapt the moisture content of the flooring to the conditions of your environment. Improper acclimation can cause the floor to buckle and/or the boards to shrink or cup after installation.


Subfloor must be level, dry and free of imperfections. An uneven subfloor will make the floor feel unstable and cause premature damage.

Drop & Lock Glueless Floating Floor Installation Instructions



FORTH BY THE NATIONAL WOOD FLOORING ASSOCIATION. If the following instructions leave any unanswered questions or if additional information is required, please call USFloors toll free at 800-404-2675 (706-733-6120).


Responsibility for the suitability of USFloors flooring and accompanying products for each individual installation cannot be assumed by USFloors, since USFloors has no control over the installer’s proper application. Should an individual plank be doubtful as to appearance or dimension the installer should not use this piece. USFloors will send replacement in a timely fashion.

NOTE: USFloors Drop & Lock flooring may be installed with a direct glue-down method on approved wooden (or) concrete substrates that are on (or) above grade only. Use only USFloors Wood and Bamboo Flooring Adhesive (or) comparable moisture cured urethane adhesives (i.e. Bostik’s Best). Please consult with adhesive manufacturer to determine if suitable for use with this material.


USFloors cannot be held responsible for site conditions.

Carefully examine the flooring prior to installation for grade, color, finish and quality. Ensure adequate lighting for proper inspection. If flooring is not acceptable, contact your supplier immediately and arrange for replacement. USFloors cannot accept responsibility for flooring installed with visible defects. Prior to installation of any flooring, the installer must ensure that the jobsite and subfloor meet the requirements of these instructions. USFloors is not responsible for flooring failure resulting from unsatisfactory jobsite and/or subfloor conditions.

Flooring should be one of the last items installed in any new construction or remodel project. All work involving water or 3580 Corporate Dr. | Dalton, GA 30720 USA Phone: 800-404-2675 | Fax: 706-733-8120 | www.usfloorsllc.com moisture should be completed before flooring installation. Water and wood do not mix. Installing flooring onto a wet subfloor will most likely cause cupping, tip & edge raising, telegraphing of core and subsequent gapping.

Crawl spaces must be a minimum of 18" (46 cm) from the ground to the underside of the joists. A ground cover of 6–20 mil black polyethylene film is essential as a vapor barrier with joints lapped 6" (15 cm) and sealed with moisture resistant tape. The crawl space should have perimeter venting equal to a minimum of 1.5% of the crawl space square footage.

These vents should be properly located to foster cross ventilation. Where necessary, local regulations prevail.

Room temperature and humidity of installation area should be consistent with normal, year-round living conditions for at least one week before installation of flooring. Optimum room temperature of 70° F and a humidity range of 30-50% is recommended during installation. Humidity levels below 30% will most likely cause movement in the flooring, including gapping between pieces and possible cupping and checking in the face.

Store the flooring in the installation area for 72 hours before installation to allow flooring to adjust to room temperature. Do not store the boxes of flooring directly on concrete. These floors need adequate acclimation for moisture equalization prior to installation and should not be installed from just-opened boxes. Shuffle the boards for best visual mix of lengths and color.


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• Dry and will remain dry: Subfloor must remain dry year-round. Moisture content of wood sub floors must not exceed 11%. Concrete must be tested for moisture content using the Andydrous Calcium Chloride test method, a noninvasive moisture meter, or a pin/probe moisture meter.

• Structurally sound

• Clean: Thoroughly swept and free of all debris

• Level: Flat to 3/16" per 10-foot radius Wood subfloors must be dry and well secured. Nail or screw every 6" along joists to avoid squeaking. If not level, sand down high spots and fill low spots with a Portland Based leveling patch.

Concrete subfloors must be fully cured, at least 60 days old, and should have minimum 6-mil polyfilm between concrete and ground. Subfloor should be flat and level within 3/16" per 10' radius. If necessary grind high spots down and level low spots with a Portland leveling compound.

All concrete should be tested for moisture prior to installation using the Andydrous Calcium Chloride test method, a noninvasive moisture meter, or a pin/probe meter. When using a Calcium Chloride Test, the result must not exceed 3 lbs per 1000 sq. ft. in a 24 hour period.

Ceramic Tile, resilient tile and sheet vinyl must be well-bonded to subfloor, in good condition, clean and level. Do not sand existing vinyl floors, as they may contain asbestos.

A moisture test must be performed to ensure that the concrete slab is dry. Remember, a concrete slab on/below grade that measures dry today may become moist in the future due to rising groundwater. Installing a moisture barrier now may be viewed as an insurance policy against concrete becoming wet in the future. USFloors is not responsible for site related moisture issues.

For additional protection, you may want to consider applying moisture barrier compound system.

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Acceptable subfloor types:

• CDX Underlayment Grade Plywood (at least ½" thick)

• Underlayment grade particleboard

• OSB (at least ¾" thick)

• Concrete slab

• Existing wood floor

• Ceramic tile

• Resilient tile & sheet vinyl


Make sure subfloor is tested for moisture first and is properly prepared.

Work from several open boxes of flooring and “dry lay” the floor before permanently laying the floor. This will allow you to select the varying grains & colors and to arrange them in a harmonious pattern. It also allows you the opportunity to select out very dark/light pieces for use in hidden areas in order to create a more uniform floor. Remember, it is the installers’ responsibility to determine the expectations of what the finished floor will look like with the end user first and then to cull out pieces that do not meet those expectations.

Begin installation next to an outside wall. This is usually the straightest and best reference for establishing a straight working line. Establish this line by measuring an equal distance from the wall at both ends and snapping a chalk line.

The distance you measure from the wall should be the width of a plank plus about 3/8" for expansion space. You may need to scribe cut the first row of planks to match the wall in order to make a straight working line if the wall is out of straight.

You may want to position a few rows before starting installation to confirm your layout decision and working line. When laying flooring, stagger end joints from row to row by at least 8". When cutting the last plank in a row to fit, you can use the cut-off end to begin the next row. If cut-off end is 8" in length or less, discard it and instead cut a new plank at a random length and use it to start the next row. Always begin each row from the same side of the room. When near a wall, you can use a pry bar to pry close the side and end joints.


Inspection: Prior to installation, inspect planks in daylight for visible faults/damage. Check if subfloor/site conditions comply with the specifications described in these instructions. If you are not satisfied do not install, and contact your supplier.

Moisture Protection: Lay the PE film, allowing for at least 20 cm (8") overlapping and tape. Turn the film upward 5 cm (2") along the walls. Trim after the skirting boards are fixed.

Drop & Lock Glueless Floating Floor Installation Instructions Page 3 of 6 Revised 8/12/14 Before Laying: Measure the room at right angle to the direction of the planks. For best visual effect, planks in the final row should be at least 2 inches wide (half width of plank minimum). For this purpose, planks in the first row can be cut to smaller size. Shuffle planks in order to obtain a pleasant blend of shades. Lay planks preferably following the direction of the main source of light. We recommend laying on wooden floors crossways to the existing floorboard. Planks must not be nailed or screwed to the subfloor. Base boards and molding must not be fixed in a way which restricts the movement of the floor.

Expansion Gaps: provide 3/8" (10 mm) expansion gaps to the walls and other fixed objects. Areas greater than 900 sq. ft (100 m²) or 30 feet (10 m) in either direction, transitions between rooms, and asymmetrical areas require extra expansion gaps utilizing a T-Mold.


1. Starting from the LEFT with the tongue facing the wall, carefully place the first board in place.

Use spacers along the wall allowing required expansion gap (3/8" or 10 mm). (Figure 1)

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4. Cut the final board piece to length allowing for the required expansion gap.

5. Place spacers against wall to restrain movement and maintain expansion gap.

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2. Position the first board in place by angling it up slightly, pushing forward and interlocking the side tongue. (Figure 3) Slide the board to the left as necessary to align the edges of the end joint.

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5. Restrain the movement of the board by inserting a spacer in the expansion gap at the end of the board.

6. Install the remaining boards and rows in the same manner. (Figures 3 & 4)

7. Cut the last board to size allowing for the required expansion gap. Place spacers against wall to restrain movement and maintain expansion gap. If necessary, complete the tight fit by tapping the Figure 4 board into place with a pull bar.

8. Whenever practical, use cut pieces from previous rows as the starter board to reduce waste.

9. Maintain 8” spacing between end joints after the first four rows for best appearance.

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1. The last row may need to be cut lengthwise (ripped).

2. Place the last row of planks to be fit no top of the last row of installed planks. Use a piece of plank as a scribe to trace the contour of the wall.

3. Mark where the board will be cut. If the fit of the wall is simple and straight, simply measure for the correct fit and cut.

4. After boards are cut, position planks and tighten the fit using the pull bar.


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3. After the groove ledge has been trimmed, place the board in place and tighten with a pull bar to test for fit. The installer must be sure that the required expansion gap has been maintained and the flooring is not pinched.

4. If fit is not correct, re-trim as necessary.

5. Place a bead of wood glue on the bottom lip of the groove.

6. Insert the tongue into the groom and tighten the fit with a pull bar. Hold the board in place with painters tape (3M Scotch-Blue™ 2080 Tape) until the glue is dry. Do not use masking tape or duct tape as they may damage the floors finish.

In-floor Radiant Heat:

Flooring can be installed using the floating or glue down method. When gluing floor, use only USFloors Wood and Bamboo Flooring Adhesive over manufacturer’s recommended substrate.

• Turn the heat off for 24 hours before, during and 24 hours after installation when installing over radiant heated subfloors

• Failure to turn the heat off may result in shortened working time of the adhesive.

• Floor temperature must not exceed 85°F (30°C).

• Failure to strictly follow adhesive manufacturer’s guidelines may result in failure and void warranty.

Warning: Heating mats work very well under carpet, tile and stone, however we do not recommend to have them placed directly underneath a wood, cork, or bamboo floor. It is best to install wood, cork, or bamboo flooring over embedded floor heating systems.

*This type of installation requires a specific construction of the plywood subfloor and the installer for such must be familiar with the NWFA recommendations.

NWFA (National Wood Flooring Association) can be reached at 800-422-4556 U.S, or 800-848-8824 Canada.


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