To get the best life extension from your slurry seal treatment, think in terms of preservation and address minor issues early, before serious, irreversible underlying structural damage occurs. In this way, asphalt pavement life can be substantially extended at comparatively low cost.
Of course, slurry seal can be used to address certain pavement distresses in addition to its pavement preservation benefits. In doing so, it is important to understand the life expectancy of the slurry seal decreases as the distress severity increases. Optimal slurry seal performance occurs when the treatment is applied before existing pavement distresses become too severe or widespread.
Many agencies have reported 8 years or more of service life when slurry seal is installed on newer pavements in good condition. Using slurry seal as a stop-gap measure on marginal candidates is not recommended.
Other factors affecting slurry seal performance include climatic conditions, traffic volumes, application rate, material quality, mixture design, and construction quality.