A - Yes. After the floor has been properly cleaned and abraded (see the "Heavy Scrub and ReCoat" section of this booklet), we recommend that Hillyard Court Guard seal be applied to the floor before applying the solvent-based finish. Court Guard will act as a primer to help ensure that the solvent-based finish will adhere to the existing water-based finish. Court Guard will also help prevent color penetration into any raw wood that may be present. All solvent-based finishes will give raw wood color, normally amber. If there are deep scratches or the ends of boards were not properly sealed with the water-based system, the solvent-based finish will have a tendency to spread under the water-based finish by capillary action.