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Flooring 101 Home Flooring Adhesive TDS Exmore EX3 Pro Technical Data

Exmore EX3 Pro Technical Data


Hardwood Flooring Adhesive


EXMORE EX3 Pro hardwood flooring adhesive has been specifically designed to bond domestic and exotic hardwood flooring to approved substrates. EXMORE EX3 Pro's unique formulation provides the additional bond strength and adhesive affinity to exotic wood species that can be extremely dense, virtually non-porous and have high oil content. EXMORE EX3 Pro is easy to trowel and has excellent trowel ridge hold-out to ensure proper bonding.


  • Easy application and quick cure
  • Superior bond strength and elasticity


  • For installing domestic and exotic solid hardwood and engineered wood flooring


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


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 when the moisture vapor emission rating (MVER) exceeds 5 lbs. per 1,000 sq. ft. (2,27 kg per 92,9 m 2 ) per 24 hours, according to ASTM F1869. Do not install when the relative humidity (RH) of the concrete slab exceeds 80%, according to ASTM F2170. Concrete slabs exceeding 5 lbs. (2,27 kg) MVER or 80% RH should be treated with a moisture vapor reduction product. 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%.


All substrates must be structurally sound, dry, solid and stable. The substrate 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-ft. span (4,5 mm in a 3,05-m 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 instructions thoroughly prior to use. Wear all appropriate personal safety equipment during use. Refer to the Safety Data Sheet for more information.

1.    Select the appropriately notched trowel (see the "Trowel Recommendation and Approximate Coverage" section) for the wood-floor thickness to be installed.

2.    Spread the adhesive evenly over the subfloor, keeping the trowel at a 45 angle to the subfloor, in a 1 -to-2-ft. (0,30-to-0,61-m) wide strip for easy plank placement.

3.    Only apply as much adhesive as can be installed within 45 to 60 minutes.

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

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

6.    Clean tools while the adhesive is still fresh/wet using mineral spirits.

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


  • 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*





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 before the installation of floor covering.

** Working Time: The maximum amount of time 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% RH)

Polymer type


Percent solids



37 g per 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)

Trowel Recommendation and Approximate Coverage*

Flooring Type

Recommended Trowel

Coverage per 4 U.S. gals. (15,1 L)

Cork underlayment

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

125 to 185 sq. ft. per U.S. gal. (3,06 to 4,53 m 2 per L)

Finger block parquet, solid and engineered wood flooring < 1/2" (12 mm) thick

1/8" x 1/8" x 1/8" (3 x 3 x 3 mm) 

35 to 45 sq. ft. per U.S. gal. (0,86 to 1,10 m 2 per L)

Solid and engineered wood flooring > 1/2" (12 mm) and < 3/4" (19 mm) thick

1/4" x 1/4" x 1/4" (6 x 6 x 6 mm) 

30 to 40 sq. ft. per U.S. gal. (0,73 to 0,98 m 2 per L)

1 Trowel dimensions are depth/width/space. Coverages shown are for estimating purposes only. Actual jobsite coverages may vary according to substrate conditions, type of trowel used and setting practices.

Lumber Liquidators Services, LLC

3000 John Deere Rd | Toano, VA 23168


Edition Date: 11-17-2014


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.

Flooring 101 Home Flooring Adhesive TDS Exmore EX3 Pro Technical Data