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Flooring 101 Home Flooring Adhesive TDS Exmore Max Technical Data

Exmore Max Technical Data


Ultimate wood-flooring adhesive


EXMORE MAX ULTIMATE WOOD-FLOORING ADHESIVE is a one-component, 100%-solids, moisture-cure polyurethane adhesive that has been specifically developed to provide maximum bond for all types of wood and bamboo flooring; to reduce sound transmissions in multi-unit housing installations; and to provide a moisture barrier that will protect your wood-floor investment from damage caused by moisture vapor coming through a concrete subfloor.


  • Superior bond strength and elasticity
  • Superior moisture vapor protection
  • Superior sound reduction
  • Lifetime warranty protection


  • For installing all types of solid and wood flooring


Concrete and properly prepared cement terrazzo; primed gypsum underlayments; existing and properly prepared ceramic tile; exteriorrated, cement-based self-leveling underlayments and patching compounds; epoxy-based moisture-reduction barriers; radiant-heat systems; and APA or CANPLY Group 1 exterior-rated plywood and other approved wood underlayments.


Do not install over any substrates containing asbestos. For interior installations only. Not recommended for flooring designed for nail-down installations only. Do not install in areas with known hydrostatic water-pressure issues. Use only when the substrate temperature is between 50F and 90F (10C and 32C), and when the ambient relative humidity is between 20% and 80%. Do not install if standing water is present. This adhesive will not reduce the effect of moisture/ water exposure from the surface, sides or ends of the wood flooring. Do not install over extremely smooth concrete. Concrete must have a texture similar to a broom finish for proper bonding.


All substrates must be structurally sound, dry to the touch, solid and stable with no visible standing water. Substrates should be clean and free of dust, dirt, oil, grease, paint, curing agents, concrete sealers, loosely bonded toppings, loose particles, old adhesive residues, and any other substance or condition that may prevent or reduce adhesion. Substrates must be flat to 3/16" in a 10-foot span (4,5 mm in a 3,05-meter span). Refer to the wood-flooring manufacturer's guidelines. Concrete and cement-based underlayments and patches must be fully cured and free of any hydrostatic and/or moisture problems. Use a moisture meter to check the RH of the wood flooring, surface of the substrate, and general jobsite area. Follow the flooring manufacturer's guidelines.


Read all installation instructions thoroughly prior to installation. Wear all appropriate personal safety equipment during use. Refer to the Safety Data Sheet for more information.

1.    Remove the special clips found inside the bucket, select the correct clip per flooring thickness (see coverage chart below) and attach to a standard 11" (28 cm) trowel.

2.    Using the flat side of the trowel, key the adhesive into the subfloor to create a smooth, void-free surface.

3.    Once the adhesive has been keyed in, immediately spread the adhesive using the special clip-on trowel attachment. Trowel ridge lines should be perpendicular to the wood-flooring installation's direction. Hold the trowel at a 60 to 90 angle to the subfloor, making sure that the subfloor is covered 100% with adhesive and that no void spots appear other than the "valley bottoms" created by the trowel. These areas will fill in as the wood is installed.

4.    Only apply as much as can be installed within 45 minutes.

5.    Install wood flooring in strict accordance with the flooring manufacturer's written instructions.

6.    Install flooring immediately, pressing it firmly into the adhesive bed to ensure that all ridges are compressed into a monolithic layer.

7.    Make every effort to prevent adhesive from getting onto the flooring surface. Remove adhesive smudges immediately using mineral spirits and a white cotton cloth. Change the cleanup rags often.

8.    Clean tools while the adhesive is still fresh/wet with mineral spirits.

NOTE: Do not stand or kneel on freshly installed wood flooring, as adhesive can ooze up between joints and flooring can slip out of alignment.

NOTE: Use a fresh clip-on trowel attachment for each bucket of EXMORE MAX. DO NOT REUSE TROWEL. Proper coverage is paramount for warranty coverage.


  • Protect from light traffic for at least 12 hours. Protect from heavy traffic for at least 24 hours.
  • Building owners should be advised of the wood-flooring manufacturer's guidelines for climate control settings (temperature and humidity). These conditions must be monitored and kept constant in order to ensure the overall performance and long-term success of the installation.


Application Characteristics over Porous and Non-Porous Substrates

Flash Time*

Working Time**

Adjustability Time***

At 73F (23C) and 50% humidity

0 minutes

45 to 60 minutes

2 to 3 hours

* Flash Time: Amount of time recommended for the adhesive to remain exposed to the air following application and before the installation of floor covering.

** Working Time: The maximum amount of time that an adhesive can remain exposed to the air and still effectively bond to the floor covering.

*** Adjustability Time: The window of time when adjustments can still be made to the position of the floor covering without compromising the bond of the adhesive.

NOTE: Working time and adjustment times vary based on temperature, humidity, substrate porosity, trowel size and jobsite conditions.

Product characteristics
at 73F (23C) and 50% relative humidity

Polymer Type


Percent Solids



< 20 g/L



Shelf Life

1 year when stored in original packaging at 73F (23C)

Storage Conditions

50F to 90F (10C to 32C)

Flash Point (Tag)

> 200F (93C)


Flooring Type

Recommended Trowel

Coverage per 4 U.S. gals. (15,1 L)

Wood flooring > 3/8" (10 mm) thick

3/8" x 3/16" x 3/8" x 1/16" (10 x 4,5 x 10 x 1,5 mm)

30 to 40 sq. ft./U.S. gal. (0,73 to 0,98 m2/L)

120 to 160 sq. ft. (11,1 to 14,9 m2)

Wood flooring < 3/8" (10 mm) thick

1/8" x 1/8" x 1/8" x 1/16" (3 x 3 x 3 x 1,5 mm)

30 to 40 sq. ft./U.S. gal. (0,73 to 0,98 m2/L)

120 to 160 sq. ft. (11,1 to 14,9 m2)

ASTM Standards for Sound Reduction; Lumber Liquidators certifies that the following sound tests were conducted and results supplied by NGC Testing Services, Buffalo, NY.

Sound-Reduction Ratings - Bellawood Engineered Red Oak Wood 1 1/2" (12 mm) Thick Over 6" (15 cm) Concrete Slab 2

ASTM Test Method

No Suspended Ceiling

Suspended Gypsum Ceiling

ASTM E90-04/ E413-10 (STC) -Airborne sound

49 (NGC Test No: 5014112)

66 (NGC Test No: 5014111)

ASTM E492-09/ E989-06 (IIC) -Impact sound

49 (NGC Test No: 7014152)

72 (NGC Test No: 7014151)

ASTM E2179-03 (Delta IIC) -Impact sound

20 (NGC Test No: 7014153)


For Lumber Liquidators EXMORE EX3 Max wood-flooring adhesive applied with clip-on trowel attachment

1    1 layer of 1/2" x 5" (12 mm x 12,7 cm) random-length, red oak, engineered, pre finished hardwood flooring

2    6" (15 cm) thick reinforced concrete slab; weight is 75 psf (366,15 kg/m 2 )


Lumber Liquidators Services, LLC

3000 John Deere Rd | Toano, VA 23168


Before using, user shall determine the suitability of the product for its intended use and user alone assumes all risks and liability whatsoever in connection therewith. ANY CLAIM SHALL BE DEEMED WAIVED UNLESS MADE IN WRITING TO US WITHIN FIFTEEN (15) DAYS FROM DATE IT WAS, OR REASONABLY SHOULD HAVE BEEN, DISCOVERED.

Edition Date: 9-15-2014

Flooring 101 Home Flooring Adhesive TDS Exmore Max Technical Data