Four solid methods to preserve our roadways

Mayor Peter Carlisle joined the Department of Facility Maintenance and the Hawaii Asphalt Pavement Industry (HAPI) June 27 to demonstrate several pavement preservation methods the city will evaluate as part of its effort to improve road conditions.

More than 120 guests from city, state and federal government agencies, as well as contractors and consulting firms, attended the demonstration to observe the application of each of the four treatments.


The goal of pavement preservation is to treat a road that is in good condition to extend the life of the asphalt pavement. Mayor Carlisle would like to “protect our roadways to help stop potholes and other problems before they even start.”

Thefour methods demonstrated are as follows:

Crack fill

Crack filling is the most basic of the four treatments that were demonstrated. The mayor himself demonstrated the filling of a crack with CrackMaster PL hot-applied crack sealant. Once moisture penetrates the asphalt, it will deteriorate the underlying layers, eventually causing failure. SealMaster Hawaii provides coldand hot-pour materials that can be used as a first defense against pavement deterioration and moisture seeping in.

Fog seal

A fog seal is a light application of emulsion sprayed onto an existing asphalt surface. Plasti-Pave Rejuvenator is an acrylic reinforced asphalt emulsion. It is used to penetrate old asphalt surfaces that have become dry and to seal very small cracks and surface voids. It also coats aggregate particles at the surface. This product was applied by the City and County.

Seal coat


A seal coat is an application of asphalt emulsion that is usually mixed with coarse angular sand and applied to an existing asphalt surface. In addition to providing a protective barrier to stop water penetration, MasterSeal Ready-To-Use or OptiPave Plus sealers will also protect against oxidation, oils and gases, and will beautify your asphalt by providing a uniform black color on the surface. This product was applied by Walker-Moody Construction.

Slurry seal

A slurry seal is a mixture of aggregate, emulsified asphalt (cationic quick-set emulsion, CQS-1h), fillers, additives and water. Like a fog seal and seal coat, it is a surface treatment for older pavements. It will fill the surface cracks, stop raveling and improve skid resistance. Additionally, it will waterproof the surface and reduce oxidation deterioration. This product was provided and applied by Alakona Corp., which is currently using the slurry method in Mililani Mauka.

All products used in the demonstration are available at SealMaster Hawaii. These pavement-maintenance techniques have been used in the private sector for a number of years and SealMaster is happy to provide its products to the city, county and state.

For more than 40 years, quality-driven contractors have relied on SealMaster, the most recognizable name in pavement maintenance in the world. With everything under one roof, contractors save valuable time and money on products, tools and equipment needed to do the job right.


Pavement maintenance is simple with the help of SealMaster Hawaii. Call 839-2781 to talk with one of the company’s trained professionals or visit the showroom at 2927 Mokumoa St. in Honolulu.

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