How do we determine traffic paint durability
It is impossible to predict the useful life one can anticipate from any applied traffic paint. This is because the normal durability of any traffic paint will be determined by a wide variety of exposure conditions, including: the amount (volume) and the type (weight, kinds of tires, etc.) of vehicular traffic driving over the traffic paint; the amount of Ultraviolet light (“UV”) exposure, and whether direct or indirect; the actual weather conditions (rain, ice, sleet, snow, sunshine, clouds, etc.); chemical exposure (e.g. gasoline, motor oil, ethylene glycol, antifreeze or engine coolant fluid, acid rain, calcium chloride, sodium chloride, other salts or salt air); wind-blown sand, grit, etc.
Tropical environments are the most severe that paints must endure, including strong sunshine and ultraviolet light, high humidity, salt air, high temperatures, heavy rains, strong winds, thermal shock from daytime showers, etc. Some U. S. Federal Government performance specifications require traffic paints to last three times longer (18 months) in the latitude of Washington, D.C., as in the latitude of Miami, Florida (6 months). Therefore, one should always use the most durable paint formulation one can buy for any traffic striping job in a tropical climate area.
The cost of any paint normally reflects its quality and its durability. When one understands the effective durability of different resin-based traffic paints, then one can make a more intelligent decision on the kind of traffic paint one can employ in different use or exposure situations.
For example, if traffic driving over an applied traffic paint causing wear to the paint is of primary concern, such as pedestrian crosswalk paint lines at a major vehicular traffic intersection in a major city, then one would NOT use a vinyl-acrylic-resin based paint. Instead, one would use tougher, longer-wearing resin-based traffic paint, such as alkyd-resin (oil-based) traffic paint, or even synthetic-rubber-based resin traffic paint. Yes, the paint will cost more per gallon, but the longer wearing, tougher resin will allow the traffic line to last longer, thus the cost on a per square foot per days (or months) of useful life should be less, thus saving the purchaser money over the longer duration of the paint’s useful life.
Likewise, if the traffic paint is going to be applied in a parking garage or shopping center parking area, and there will be only an occasional vehicle driving over the paint lines, because the vehicles will park between the paint lines, so the paint does NOT have to endure the same kind of traffic wear as it would on a highway, then one could chose to use a vinyl-acrylic-latex-resin based traffic paint. We have seen these lines in parking lots in southern Florida last six (6) years and even longer and the same paint probably wouldn’t last six (6) weeks were it used to paint pedestrian crosswalk lines at a major intersection that had heavy automobile and trucks driving across the lines at the rate of hundreds of vehicles per hour!