The first thing people see when they arrive at a place of business or somebody’s home is typically the driveway. A well-maintained driveway contributes significantly to the aesthetic appeal of the premises. Building owners and home residents protect their asphalt driveways by applying sealcoating. Driveway sealers provide a source of protection from vehicles and act as a preventative agent to prolong the life of a driveway. This helps prevent excessive wear and tear while keeping the base from forming cracks and holes.
We have all seen that black “goo” and, chances are, many of us have worked with it first-hand. We are familiar with the benefits and the results of a good sealcoating application, in terms of looks and maintenance.
But how does it work? What is asphalt sealcoating really made of that provides this level of protection?
Sealcoating “Ingredients”
Coal Tar
This is a byproduct of coke oven tar, a residue that is left after oil distillation.
Asphalt Emulsion
This is a water-soluable soap-like substance that consists of an ionic head and hydrocarbon tail. They surround the coal and give it an electrical charge which keeps them suspended in water.
Emulsion Additives
The sealant is mixed with sand, clay, or polymer additives to keep it durable and easy to apply on the surface.
Final word
Sealcoating your asphalt driveway, whether it is at your business or your home, is always a good idea! Your driveway will look better and last longer with a proper seal. As an added bonus, now we know what it is made of. Happy sealing!