Specification

Roberts
®
R1509 is a 100% solids moisture cure urethane adhesive
formulated for the installation of solid, engineered and parquet wood
flooring. Also recommended for bamboo flooring.
Features:
• Recommended for solid and engineered wood
• Superb flexibility to expand and contract with wood
• Contains no water
Enviro Friendly:
• Solvent free • VOC: 0 g/L and 0% by weight
Roberts R1509 is a solvent free adhesive and meets the strict
requirements of the South Coast Air Quality Management District and
may contribute one LEED point for “Low-Emitting Material–Adhesive
and Sealant” (IEQ Credit 4.1). This product may also contribute one
to two LEED points for MR Credit 5 if product is manufactured within
500 miles of the project site. Visit usgbc.org for additional details.
Uses: For bonding solid wood plank, bamboo, flat milled shorts,
finger/block parquet (plain back), engineered and acrylic impregnated
flooring recommended for glue-down applications, cork underlayment
and plywood.
Substrates: Concrete, APA or PS1-95 rated plywood, oriented
strand board (lightly sanded), vinyl composition
tile (well bonded, free of wax, residential
engineered wood flooring only),
acoustic cork underlayment, primed
gypsum underlayment, terrazzo and
radiant heated flooring systems. Consult
the wood flooring manufacturer’s
installation instructions for their specific
underlayment recommendations.
Surface Preparation: Subfloors must
be structurally sound, dry, smooth, flat
and free of excess moisture/alkali and
all substances (oil, wax, grease, paint,
oil based sealers, adhesive residue,
etc.) that might interfere with the bond
of the adhesive.
All substrate cracks, holes, high spots
and irregularities must be adequately
repaired. Patching compounds must
be suitable for the use application,
polymer-modified and applied according
to the manufacturer’s instructions. Expansion or other moving
joints must not be filled or covered with flooring. Refer to ASTM 710
Standard Practice for Preparing Concrete Floors.
Concrete must be flat (≤ 1/8 inch in 10 ft.) with a minimum 3,000 psi.
Burnished or steel troweled concrete must be roughened using a
minimum 30-grit abrasive. Irregular substrates will lead to “hollow
spots” or “popping.” It is very important to have a smooth level surface.
Wood – Subflooring, such as APA underlayment grade plywood,
hardwood, oriented strand board (lightly sanded), or other materials,
must be flooring/underlayment grade, recommended for the
specific flooring being installed and installed to the manufacturer’s
specifications with adequate ventilation and moisture protection.
Ensure wood substrates have a minimum 18 in. crawl space with
adequate ventilation and moisture barrier protection. Cracks, chips
and joints must be properly patched or repaired. Wood substrates
must not have more than 12% moisture content. Ensure moisture
content of wood subfloor is within acceptable moisture range of wood
flooring prior to installation.
Gypsum – Gypsum based underlayments must be appropriately cured,
dry, on or above grade, with a compressive strength of >2,500 psi
for solid wood and >2,000 psi for engineered wood flooring. Consult
flooring manufacturer for their specific
recommendations for gypsum based
underlayments.
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Wood and Bamboo
Flooring Adhesive
SUPERIOR
Roberts Consolidated Industries, Inc. • Boca Raton, FL 33487 • [phone] • www.robertsconsolidated.com 1
R1509
Solvent
Free
The amount of time in which the
adhesive cures will vary with
temperature and humidity. The
higher the temperature and the
higher the humidity the faster
the adhesive will cure. Lift a
board periodically to ensure 100%
coverage of adhesive to the flooring
backing and the substrate.
Clean Up: Fresh adhesive – Use
R5505 Urethane/ Multipurpose
Adhesive Remover or mineral spirits
sparingly with a clean, white cotton cloth.
DO NOT POUR CLEANER DIRECTLY ONTO FLOORING.
Dried adhesive – If adhesive dries on floor finish carefully scrape
excess adhesive with plastic putty knife and use R5505 (see label
instructions for proper clean up of dried adhesive). Avoid damaging the
finish. Touch up any scratched finish with wood flooring manufacturer’s
repair finish.
Refer to material safety data sheet, www.robertsconsolidated.com
and industry standards prior to installation for additional information.
For installation questions that are not covered in this document please
contact our Technical Services Department at [phone].
Limited Warranty: Buyer assumes all risk of use, handling and storage
of product not in strict accordance with the label, printed literature and
industry standards. This limited warranty excludes all other express
or implied warranties including the warranties of merchantability or
fitness for a particular use or purpose. Any implied warranties arising
by operation of law are limited to one year. Roberts will not be liable
for any incidental or consequential damages. Some states do not allow
these limitations or exclusions, therefore they may not apply. This
warranty gives you specific legal rights and you may also have other
rights which vary from state to state.
Available Sizes:
General:
Ensure HVAC is fully operational and is set to the temperature
that will be maintained during the life of the flooring installation.
Ensure substrate, flooring material and adhesive are fully acclimated
prior to installation at the same temperature and humidity level
expected during normal use (between 65–95°F) with a relative humidity
(RH) of no greater than 65%. Refer to flooring manufacturer’s specific
recommendations and industry standards. Ensure moisture content
of wood flooring and substrates are within the wood manufacturer’s
specified range.
Materials, substrate and area temperature must be between 65–95°F
with a maximum RH of 65% for 48 hours before and during installation as
well as for 72 hours afterward. Large temperature or humidity increases
or decreases can affect the flooring and performance of the installation.
Ensure radiant heated floors have been in operation and that all excess
residual moisture is removed (evaporated) from the system and the
concrete slab is fully cured. Turn the heating system off to ensure that
the adhesive does not dry to fast.
Ensure adequate ventilation during flooring installation.
Refer to NWFA.org for additional information as well as wood
manufacturer’s installation guidelines.
Physical Characteristics (70°F, RH 50%):
Note: Open, working and curing times for Roberts R1509 will vary with
temperature and humidity.
Open Time: Up to 80 minutes
Working Time: Up to 120 minutes
Cure Time: 8–10 hours
Shelf Life: One year in unopened container
Freeze-thaw stable
Application and Installation: Do not install solid wood flooring or
bamboo below grade. Clean any adhesive from surface flooring
immediately with Roberts R5505 adhesive remover. Roberts R1509 is a
chemical curing adhesive and once dry will form a chemical bond with
the flooring surface. It is very important to remove this adhesive while
it is still fresh and before it has completely cured.
Wet-Lay Method
– Apply adhesive to substrate with appropriate trowel.
Immediately install flooring into wet adhesive.
Walk-on Method
– Apply adhesive to substrate with appropriate trowel
and allow it to develop tack. Install flooring into adhesive. After your
“walk-on” set of boards have been installed; secure them with the
appropriate surface tape to prevent boards from sliding or separating.
Roll flooring installation with the manufacturer’s recommended roller to
ensure proper contact.
The trowel notches referenced are those typically recommended for the type of flooring being installed. They
are normally the minimum size recommended. Surface conditions (roughness and porosity of substrate), type
of flooring and backing will ultimately determine the required trowel notch size and coverage.
Always check with the specific flooring manufacturer’s recommendations for their specific trowel
requirements. Ensure 100% transfer of adhesive to the substrate and the flooring backing.
FLOORING TYPE TROWEL SIZE ROBERTS ITEM # COVERAGE
> 1/2 in. Engineered Wood
or
≤ 3/4 in. Solid Wood and
Bamboo Flooring
30–40 sq. ft.
per gallon
1/4 in. x 1/4 in. x 1/4 in.
1/4 in. x 1/4 in. x 1/4 in.
1/8 in. x 1/8 in. x 1/8 in.
70–80 sq. ft.
per gallon
≤ 1/2 in. Engineered Wood
45–55 sq. ft.
per gallon
Finger Block Parquet
49732 / 10123-12
49739 / 10142-12
n/a