Chip seal or slurry? Santa Maria rating city streets for ...- slurry seal cost per square yard ,According to city engineers, a slurry seal costs $2-$3 per square yard and a chip seal is $3-$4 per square yard treated. In comparison, the city’s current thin maintenance overlay project is ...Road Resurfacing Techniques - City of SacramentoSlurry seal is a preventative maintenance procedure. The construction cost is approximately $1.75 per square yard. Slurry sealing can extend the life of a street by 5-7 years.