1. Coatings
 Single Component Products
 TT-P-1952E - Waterborne traffic paint
 A-A-2886A - Solvent traffic paint
 Relatively simple application
 Plural Component Products
 Epoxy Paint
 Methyl-Methacrylate paint
 More complicated application
 More durable than conventional paints

2. Coatings
TT-P-1952E (waterborne) is the
most commonly used coating in the
U.S. industry.

3. Coatings
Properties of TT-P-1952E
Waterborne paint was developed in response to the rising
demand for more environmentally friendly pavement marking
products.
 Low VOC (volatile organic compound).
 Durable when applied properly.
 Simple to clean up with water.
 Excellent glass bead retention.
 Highly visible colors.
 Type I – dries in 10-15 minutes under 85% humidity.
 Type II – fast dry (less than 5 minutes).
 Type III – is a high-build acrylic.
 Non-hazardous and non-flammable.

4. Coatings
General Precautions
 Waterborne paint cannot be used in
galvanized, brass, aluminum, or steel
equipment; stainless steel only.
 Paint must be prevented from freezing
and should be stored between 50-90 F.
 Paint should not be thinned.
 Clean equipment after each use.

5. Coatings
Application Conditions
 Application temperatures:
- Air temperature should be 45-50 F and rising.
- Surface temperature should be greater than 55 F, and
5 higher than the dew point.
- Relative humidity should be less than 85% (or expect
longer dry times.
- Heating or painting above 110 F is not recommended.
 Surface must be visually dry.
 Do not paint in windy conditions, unless windscreens
are used.
 Material coverage varies due to equipment speed,
surface porosity, and material viscosity.

6. Coatings
Common Problems
 Discoloration (iron staining) from iron present in
soil and/or pavement aggregate.
 Bleed through of asphalt into white paint makes the
paint appear brown. A primer coat (200-250 SF/gal)
seals the oils from the coating.
 Flaking and peeling of new coating due to insufficient
surface preparation.
 Paint bonds better to the asphalt than the asphalt does
to itself, causing premature pavement deterioration.

7. Coatings
Curing of Coatings
Markings are cured when all the chemical reactions stop.
That means all the water and solvents have evaporated. The
No-track condition usually comes sooner.
 Paint temperature – the higher the temp, the faster the cure.
 Pavement temperature – the higher the temp, the faster
the paint will cure.
 Humidity – the higher it is, the slower the cure.
 Wind speed – the higher the wind speed, the faster the
paint will cure.
 Paint thickness – the thicker the paint, the slower the cure.

8. Coatings
Intercoat Adhesion
Intercoat Adhesion of waterborne traffic paints can be
a problem if the application parameters and dry time
recommendations are not followed.
• For Fast Dry Waterborne paints, the minimum application
temperature is 50°F and rising.
• For Low Temperature Application Waterborne paints, the
minimum application temperature is 35°F and rising.
• For both paints, the temperature must be at least 5°F above
the dew point and be maintained during the dry through.
• First coat must be completely cured (24 hours) before
application of a second coat or new layer.

9. Coatings
Terminology of Marking Materials
 Solvents transport solid portions of the mixture (pigments,
resins, fillers) during manufacture and application.
 Pigments are used to provide color, UV stability, wear resistance,
and hiding. They are the most expensive ingredient in the paint.
 Fillers (or extenders) are relatively inexpensive, and are used
to give paint its bulk and increase durability.
 Additives are used to prevent ingredients from settling and
skinning in the container, as well as aid drying, disperse
pigments, prevent freezing, adhesion, etc.
 Shelf Life is the usable period when the integrity of the
paint is stable.

10. Coatings
Compatibility of Coatings
 New coating must be compatible with existing coating.