EXPERT ADVICE
Continued from page 31
Evaluate the Risk
Low temperatures often cause the parti-
cles in pavement coating emulsions to stiff-
en, preventing the particles from flowing
together as necessary for proper adhesion
when applied to the asphalt surface. As a
rule, temperatures must remain at 50 de-
grees Fahrenheit or higher throughout
the application and entire drying process.
Professionals who do not follow weather
guidelines risk project failure. Knowing this
in advance, pavement maintenance profes-
sionals can appropriately watch the weather
forecast before finalizing the schedule of
any sealcoating job.
Optimize Exposure to Sunlight
Temperatures often fluctuate during the
autumn months and finding a time period
that’s warm enough to execute the entire
sealcoating process may be challenging.
Luckily, exposure to direct sunlight can
speed up the drying and curing process,
allowing professionals to apply treatment
before the outside air becomes too chilly.
On the flip side, shorter fall days provide
fewer opportunities for light exposure, so
it is especially important to maximize what
sunlight is available. In addition, the angle
of the sun often creates shade on the north-
ern sides of buildings during the autumn,
increasing the drying time needed in these
particular areas. It’s important to consider
how sun patterns may shift across the pave-
ment property throughout the day when
planning the best course of action.
Expedite Drying Time
When clouds, buildings and other obsta-
cles limit direct sunlight on a job site, con-
tractors can rely on other methods for fa-
cilitating faster drying times. Lowering the
dilution rate of mix design can expedite the
process. Drying agents can also be added.
This is especially beneficial for sealcoating
jobs on properties that must be reopened to
traffic quickly. For larger projects, it’s best
to complete work in sections to allow each
area an ample amount of time to dry and
cure prior to reopening the lot.
Keeping the above risk factors and ap-
plication tips in mind can help pavement
maintenance professionals make informed
decisions regarding late-season sealcoating.
When evaluating the situation, remaining
transparent with customers every step along
the way will build trust and avoid potential
frustrations if there is no choice but to delay
a project. Through transparency, property
owners will also quickly come to trust and
respect the contractor’s final decision on
sealcoating timing, as these recommenda-
tions often lead to a better final result.
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