Seal coating normally takes about 24 hours or overnight to dry and cure to a driveable state but can accept foot traffic once visibly dry. It will continue to cure and harden over the following 30 days. It is normal to see slight cosmetic scuffing but these will blend in over time.
What causes asphalt pavement to fail?
Assuming that the initial asphalt pavement was designed and constructed properly, the primary cause of failure is the penetration of water into the asphalt base. This process begins with the oxidation of the pavement surface which causes the asphalt to dry and become brittle. This leads to the erosion of the top layer of fine particles and the appearance of larger stones and small cracks on the surface.
If left untreated, these cracks expand and eventually allow water to penetrate through to the base of the pavement. When this occurs, the base material moves and settles, leading to an “alligator hide” appearance. When the pavement reaches this state the only option is removal and replacement of the damaged asphalt.
This costly situation can virtually be avoided with the preventative maintenance of seal coating.
What are seal coats?
Seal coats generally consist of a mixture of emulsified asphalt, water, mineral fillers and various other admixtures. Practically odorless and non-irritating, they are applied directly to the surface of and asphalt pavement with a broom or mechanical spray unit.
Are all sealers the same?
No. You should use a seal coat material manufactured for commercial application. Manufacturers adhere to strict specifications to ensure a quality product which meets or exceeds standard specifications.
Will seal coating fill the cracks?
With the exception of fine, hairline cracks, seal coating material does not fill open cracks. Cracks that are 1/8” or larger should be filled with a rubberized material which is flexible to allow some movement.
When should seal coating be done?
New pavement should generally be given a few months to cure before seal coating. Small patches can be sealed over soon after they are finished. Once a surface is sealed it should be resealed every 3 – 5 years depending on original condition of asphalt, traffic and other factors.
Do I need to clean the asphalt before seal coating?
The cleaner the asphalt the better adherence of the seal coat material. If the asphalt is extremely dirty or mossy, pressure washing prior to seal coating is recommended prior to our work. Moss removal is more effective if it is sprayed a few days in advance with a bleach/water mixture to kill the roots. When we arrive to seal coat, we will thoroughly clean the asphalt with wire bristled power equipment, wire hand brooms, and blowers.
I’ve accepted the proposal, what’s next?
Once we have a tentative date, we will be in touch to confirm a day. We may plan several jobs in the same area to do at the same time. We make every effort to give you at least a few days’ notice and work within time constraints of when the asphalt area is available.