High-Performance Fog Seal
Contract-Ready Construction Specification Guidelines
Download GuidelinesLearn about the benefits of High-Performance Fog Seal Treatments
Just like cheese keeps toppings from falling off of a pizza, eFog HP, a high-performance fog seal, keeps aggregate in place following new chip seal applications. eFog comprises a polymer modified, diluted asphalt emulsion coating applied to a road via distributor truck following a chip seal application, helping to further lock down aggregate and extend service life of new chip seals. This high-performance fog seal can also be applied as an alternative to conventional fog seal on dense-graded hot mix surfaces, preventing raveling and delaying the aging process.
A high-performance fog seal is a cost-effective solution that can extend the life of a roadway by 2-4 years.
eFog HP is also trackless, allowing for a cleaner jobsite, and is time-efficient. Its trackless properties help reduce the time construction crews spend on the site, and its polymer content allows for a quick return to traffic.
eFog HP is Ergon Asphalt & Emulsions’ high-performance fog seal treatment.
Best Practices
- Dilute at a 1:1 ratio with warm water at the emulsion plant.
- After dilution, the seal should be applied to the roadway as soon as possible.
- The surface that will receive the seal should be cleaned and prepared.
- Seal cracks ¼” or greater prior to or after application.
- Always allow a full cure before allowing traffic to return to prevent tracking.
Pavement Preservation Success
Success Story: High-Performance Fog Seal
DownloadThe finished appearance of pavement as seen with hot mix asphalt (HMA) has become associated with a well-maintained road. While chip-sealed roads perform to similarly high standards as HMA roads, they often generate a perception of being old and deteriorating due to their lightened color, leaving agencies appearing negligent in their efforts. The practice of fog sealing a chip seal has aided in the aesthetic battle and in extending the life of chip-sealed roads. However, the dark surface coloring created by the fog seal typically fades with traffic after a few months. To satisfy public perception and extend the life of chip seals, a longer-lasting, high-performance fog seal containing polymer modification is needed.