Mix 1/2 cup of trisodium phosphate (TSP) and 2 gallons of warm water in an empty 5-gallon bucket.
Scrub the asbestos tiles with the TSP solution and a sponge. Allow the wet tiles to dry.
Sweep the floor with a broom to remove leftover dirt and dust from the surface. Vacuum the corners near baseboards.
Pour 1 gallon of oil-based floor primer into an empty bucket. Stir the primer with a stir stick.
Ventilate the room. Paint around the tile edges where the floor meets the walls using a paint brush designed for use with oil-based coatings.
Roll the primer on the floor using a 1/4-inch paint roller attached to a telescoping painters pole. Work in 3 foot sections, starting on one side of the room and working to the other side. Allow the primer to dry.