Elastomeric Roof Coating Technology for the Next Generation of Roofs
As demand for energy-efficient “cool roofs” increases, elastomeric roof coatings can lead the charge. Dow Construction
Chemicals offers a variety of advanced materials for these coatings that are designed to meet the high thermal variability and
durability demands of roofs by providing excellent mechanical properties, substrate adhesion, dirt pickup resistance, tensile
strength, solar reflectivity, thermal emissivity and more.
That’s been our specialty since the 1970s, when we pioneered technology that enables elastomeric roof coatings to perform.
Together with key industry associations, government and other partners, Dow Construction Chemicals continues to take that
technology to new levels to drive value for our customers. For example, in cooperation with the U.S. Department of Energy,
we are pushing reflectivity boundaries even further to create an entirely new polymer technology for elastomeric roof coatings.
It’s all part of our deep commitment to drive innovation and market growth. When we’re not in the lab, we’re on a roof,
investigating how our technologies can help our customers’ products extend the life of a building’s most critical asset.
PRODUCTS IN THE SPOTLIGHT
RHOPLEX™ EC-3000 is a 100% acrylic polymer designed for use in white protective roof coatings to impart resistance to early rain
exposure. Coatings based on RHOPLEX™ EC-3000 polymers are an excellent choice for use over a variety of substrates, including
spray polyurethane foam (SPF), metal, concrete and aged built-up asphaltic surfaces.
APPLICATION
Coatings for a variety of roofing systems:
•Spray polyurethane foam
•Metal
•Concrete
•Aged built-up asphalt
Solids % Tg onset ˚C KEY FEATURES
55.0
-40
•Excellent protection for roofs
•Excellent resistance to rain
•Fast setting
•Excellent dirt pickup resistance
RHOPLEX™ EC-3100 is an all-acrylic polymer designed for use in pigmented elastomeric roof coating basecoats to provide adhesion
to weathered thermoplastic polyolefin (TPO) roofing membranes. When applied to a suitably cleaned, weathered TPO roof, and
topcoated with a durable acrylic elastomeric topcoat, a basecoat with RHOPLEX™ EC-3100 can extend the life of the existing roof.
APPLICATION
Pigmented elastomeric roof coating
basecoats over weathered TPO roofing
membrane
Solids % Tg onset ˚C KEY FEATURES
55.0
-35
•Very good adhesion
•Resistance to blistering
•Low-temperature flexibility
OTHER SPECIALTY ACRYLICS
PRODUCTS
APPLICATION
RHOPLEX™ EC-2885
•Acrylic polymer
Coatings for a variety of roofing substrates:
• Weathered modified bitumen
• Weathered smooth and granulated asphalt
• Metal
• Spray polyurethane foam
• EPDM
• Cured concrete
LIPACRYL™ MB-3640
•Acrylic polymer
Basecoats for a variety of roofing substrates:
• Asphalt
• Modified bitumen
Not recommended for use over spray polyurethane foam
Solids %
55.0
Tg onset ˚C
-35
55.0
-15
Solids %
Tg onset ˚C
KEY FEATURES
• Versatile and robust 100% acrylic
• Excellent adhesion
• Excellent low-temp flexibility and dirt
pickup resistance
• Superior mechanical properties when
compared to all-purpose products
• Excellent dry and wet adhesion to new
and modified bitumen substrates
• Superior ponding resistance on
asphaltic roofs
ALL PURPOSE ACRYLICS
PRODUCTS
APPLICATION
RHOPLEX™ EC-1791
•Acrylic polymer
Coatings for a variety of roofing substrates:
• Weathered modified bitumen
• Weathered smooth and granulated asphalt
• Metal
• Spray polyurethane foam
• EPDM
• Cured concrete
RHOPLEX™ EC-2540
•Acrylic polymer
Coatings for a variety of roofing substrates:
• Asphalt
• Modified bitumen
• Metal
Not recommended for use over spray polyurethane foam
KEY FEATURES
-40
• Versatile and robust 100% acrylic
• Excellent adhesion
• Excellent low-temp flexibility and dirt
pickup resistance
55.0
-15
• Good balance of flexibility and dirt
pickup resistance
• Excellent choice for moderate climates
Solids %
Tg onset ˚C
55.0
STYRENE ACRYLICS
PRODUCTS
APPLICATION
RHOPLEX™ 2019RX
•Styrene acrylic
polymer
Coatings for a variety of roofing substrates:
• Weathered modified bitumen
• Weathered asphalt
• Metal
• Concrete
Not recommended for use over spray polyurethane foam
KEY FEATURES
General purpose, value-engineered
binder
55.0
-15
PRIMERS AND BASECOATS
PRODUCTS
APPLICATION
RHOPLEX™ CS-4000
•Acrylic polymer
• Clear or pigmented coatings and cure membranes
• Primers/sealers for concrete
RHOPLEX™ EI-6000
•Acrylic polymer
Low VOC primer for low/no slope concrete roofs
RHOPLEX™ EC-2540
•Acrylic polymer
Basecoats for a variety of roofing substrates:
• Asphalt
• Modified bitumen
• Metal
Not recommended for use over polyurethane foam
LIPACRYL™ MB-3640
•Acrylic polymer
AVANSE™ MV-100
• Acrylic resin
Solids %
Tg onset ˚C
48.0
32
45.5
25
Basecoats for a variety of roofing substrates:
• Asphalt
• Modified bitumen
Not recommended for use over spray polyurethane foam
55.0
55.0
• Water-based coatings and industrial maintenance
primers for metallic substrates
50.0
High gloss and durability
Lower VOCs and resistant to water blush
• Good balance of flexibility and dirt
pickup resistance
• Excellent choice for moderate climates
• Reduces asphalt bleed
-15
• Excellent dry and wet adhesion to new
and modified bitumen substrates
• Good for ponds
• Reduces asphalt bleed
18
• Excellent durability, corrosion
resistance and chemical resistance
• Excellent dirt pickup resistance
• Excellent adhesion to a variety of
substrates, including metals and other
coatings
• Low coalescent demand
• Low VOC formulation (<100 g/L)
• Free of APEO-containing surfactants
• Meets regulatory standards of
compliance
20
• Excellent adhesion to metals, including
aluminum and galvanized steel
• Good corrosion resistance and reactive
pigment stability
Primers, coatings, topcoats and direct-to-metal finishes
50.5
MAINCOTE™ PR-71
• Aqueous acrylic
emulsion
-15
KEY FEATURES
RINSEABLE PRIMERS
PRODUCTS
APPLICATION
KEY FEATURES
Rinseable Primer RP-1
• High-pH low
viscosity primer
Pretreatment of EPDM or TPO membrane roofs prior to
application of elastomeric roof coatings
Recommended for use with:
• RHOPLEX™ EC-1791
• Significantly improves adhesion of elastomeric roof coatings to
EPDM and TPO membrane
• Low viscosity, sprayable liquid
• RHOPLEX™ EC-3000
• RHOPLEX™ EC-3100
Rinseable Primer RP-2
• Neutral pH low
viscosity primer
Pretreatment/cleaning of EPDM or TPO membrane roofs prior to
application of elastomeric roof coatings
Recommended for use with:
• RHOPLEX™ EC-1791
• RHOPLEX™ EC-3000
• RHOPLEX™ EC-3100
• Excellent durability, corrosion resistance and chemical resistance
• Excellent dirt pickup resistance
• Excellent adhesion to a variety of substrates, including metals and
other coatings
• Low coalescent demand
• Low VOC formulation (<100 g/L)
• Free of APEO-containing surfactants
• Meets regulatory standards of compliance
Thickeners and rheology modifiers
PRODUCTS
APPLICATION
2% AQUEOUS VISCOCITY (cP)
KEY FEATURES
CELLOSIZE™ QP 4400H
•Hydroxyethyl cellulose
Waterborne coatings and building
and construction products
~6,000
• Delayed solubility
• Medium thickening efficiency
CELLOSIZE™ QP 15000H
•Hydroxyethyl cellulose
Waterborne coatings and building
and construction products
~15,000
• Delayed solubility
• Medium-high thickening efficiency
CELLOSIZE™ QP 30000H
•Hydroxyethyl cellulose
Waterborne coatings and building
and construction products
~30,000
• Delayed solubility
• High thickening efficiency
CELLOSIZE™ QP 52000H
•Hydroxyethyl cellulose
Waterborne coatings and building
and construction products
~52,000
• Delayed solubility
• Very high thickening efficiency
Walocel™ MT 6000 PV
•Hydroxyethyl methylcellulose
Waterborne coatings and building
and construction products
5,500 – 7,500
• Delayed solubility
• Medium thickening efficiency
Walocel™ MT 30000 PV
•Hydroxyethyl methylcellulose,
modified
Waterborne coatings and building
and construction products
28,000 – 35,000
Walocel™ MT 40000 PV
•Hydroxyethyl methylcellulose
Waterborne coatings and building
and construction products
35,000 – 45,000
• Delayed solubility
• Very high thickening efficiency
Walocel™ XM 40000 PV
•Hydroxyethyl methylcellulose
Recommended thickener for LIPACRYL™-based
elastomeric roof coating
39,000 – 45,000
• Delayed solubility
• Very high thickening efficiency
• Delayed solubility
• Very high thickening efficiency
DISPERSANTS
HYDROPHOBIC COPOLYMERS
PRODUCTS
APPLICATION
SOLIDS
BENEFITS
TAMOL™ 165A
High performance. For flat through gloss.
Maximizes water resistance.
21%
Excellent early blister resistance and wet adhesion.
Good color acceptance. Good gloss development and
corrosion resistance.
TAMOL™ 731A
Extremely versatile. For acrylic, butadiene/
styrene and vinyl acrylic latex paints.
25%
Excellent overall compatibility. Good pigment wetting.
Highly efficient performance.
TAMOL™ 681
High performance pigment dispersant for
interior and exterior latex paints.
35%
Maximizes gloss potential. Good stability in paints
containing ZnO and other reactive pigments. Good
corrosion resistance.
TAMOL™ 2002
Waterborne coatings and building
and construction products.
42%
Delayed solubility. Very high thickening efficiency.
POLYACID DISPERSANTS
PRODUCTS
APPLICATION
TAMOL™ 851
Economical dispersant for flat through
semi-gloss latex paints.
30%
Highly efficient with low-foam generation. Excellent
stability in paints containing ZnO and other reactive
pigments.
TAMOL™ 901
Designed for traffic paint applications.
30%
Low-foam generator, excellent stability. Ammonia version
of TAMOL 851.
™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow
®
SOLIDS
BENEFITS
Form No. 832-0213-0911 BBI