LAS-320™ Non-Toxic Asphalt Sealer and Preservative
Sealing your driveway with LAS-320™ is a great way to protect it from the elements that over time destroys it. Your asphalt driveway is an asset that’s worth protecting and a little investment into sealing it can extend the life of your blacktop many years, improve the curb appeal, and increase the value of your property.
LAS-320™ VS Coal Tar Asphalt Sealers
LAS-320™ is a non-toxic eco-friendly fuel resistant asphalt sealer developed for military airports to protect asphalt against damages from fuel spills and is classified by the FAA as a Fuel Resistant Sealer. It makes a molecular bond with the oxidized surface that penetrates and seals cracks. LAS-320™ makes the surface impervious to water, fuels, oils, chemicals, Ultra Violet damage, and helps prevent freeze-thaw damage.
Coal tar sealant is a thick, black goop applied to driveways, asphalt parking lots and playgrounds, primarily in the eastern United States. The sealcoat contains high levels of toxic chemicals that can cause cancer and environmental harm. But the shiny, black sealant contains toxic compounds known as polycyclic aromatic hydrocarbons, or PAHs, which can seep into the environment. As a result, several cities have banned the sale and use of the product, and some localities are suing coal tar sealant manufacturers to get them to pay for the costly environmental cleanups.
Further information on Coal Tar based sealers can be found by visiting Consumer Notice, a consumer advocacy organization that informs the public about the health and safety risks associated with defective products, environmental dangers and other hazards and presents legal options to those who have been injured through the fault of another person or entity. Click on the below tag to connect with their website to learn more about the dangers of PAH’s. 
Asphalt pavements do not last forever because external factors destroy the oils that bind it all together. Heat & Sunlight accelerates the deterioration process; salt and other chemicals will also act as a catalyst. When oxygen and water contact this binder, a chemical change takes place. At first, this process is necessary for the pavement to become hard and firm. After time if this process is not stopped, complete deterioration will take place making the asphalt brittle and eventually reduce the pavement to a layer of loose stone.
Using LAS-320™ will help prevent water intrusion which leads to base failure, cracking, and potholes. As the climate changes, LAS-320™ expands and contracts with changing temperatures unlike conventional sealcoating products, LAS-320™ will not crack or fade and can remain effective for ten years or more.
The easiest way to apply LAS-320™ is by pouring it directly on the surface and spreading it out with a broom. LAS-320™ can be sprayed with an airless paint sprayer or with asphalt spraying equipment. Most driveways will have at least a few cracks which should be repaired first because even small cracks will grow wider and longer over time. Cracks that are ¾” or less can be filled with coarse sand immediately before application by pouring sand on the cracks making sure they are filled completely. Small hairline cracks can be sealed with only the LAS-320™. Typical application rates range from 60 to 120 square feet per gallon depending on the surface texture, porosity, application method, and other factors.
LAS-320™ Packaging
- 5-Gallon pails – Order Online
- 55-Gallon drums – Contact us to Order
- 275-Gallon Totes – Contact us to Order
The toxic dust from coal tar-based sealcoat doesn’t stay put. It seeps into water, evaporates into air and gets tracked into people’s homes.
LAS-320™ asphalt sealer being applied to an airport on the Caribbean Island of St. Kitts.
LAS-320™ dries fast, will not track, and protects against Oil, Chemical, and UV damage.
Just one application can extend the life cycle of your asphalt surface ten years or more.
1,400 square feet Residential driveway
Application of LAS-320™ by hand provides instant curb appeal in less than two hours
350,000 square feet applied by Alaska Sureseal at Kenai Municipal Airport, Kenai, Alaska. This area was previously treated TEN years ago and we are extending the life of the asphalt by 20 years or more
400,000 square feet applied by Sealcoat USA to the Long Island Rail Road Maintenance facility in New York City
5,000 square Feet Residential Driveway
LAS-320™ spray applied with a 12-volt pump and Garden Hose sprayer in less than two Hours
20-Acre Industrial site
LAS-320™ spray applied with conventional asphalt sprayer
Easy Crack Repair
Filling cracks with sand and LAS-320™ to prevent damage to asphalt
Commercial Application
LAS-320™ applied with custom built spray equipment. Application rate is over 300 square feet per minute
Made in USA, click for details