Rejuvenating seals may be emulsions of rejuvenating additives and may include asphalt, polymers, and other additives.
A properly calibrated emulsion distributor or a hand sprayer can be used for spraying emulsions.
ASTM D-2995 can be used to estimate emulsion application rate and residual application rate.
Rejuvenating emulsions are often diluted with water prior to application to reduce viscosity for spraying. Dilution is performed in varying proportions - up to 1 part emulsion to 5 parts water, but in most cases, a one-to-one dilution is used.