Minnesota Department of Transportation
This report was commissioned to gather information on the current practices of fog seal over chip seal that are being used by Cities and Counties within Minnesota. The report discusses current best practices and value added when compared to a stand-alone chip seal project. The information provided in this report was based off survey results from municipalities with fog seal over chip seal experience and review of technical literature within the industry. Chapter 3 is a best practice guide for roadway owners and inspectors to assist in following practices that will lead to higher product quality. This guidance can be used to supplement a chip seal best practices manual.