Apply Cool-Sil Eliminator with a Graco 933 or DUTYMAX GH 675DI Spray Rig at a rate of 8 gallons per 100 sq. ft. depending on surface texture. Use short, overlapping passes to ensure the entire surface is coated and there are no voids in the surface.
Roller
Apply Cool-Sil Eliminator with a medium to heavy nap roller. Pour material onto the surface and use roller to spread material into all cracks and crevices. If applying by roller instead of sprayer, anticipate using additional material to fill all voids. Installing by roller will also likely cause some of the rock to become disembedded which will need to be removed prior to installing the Cool-Sil top coat.
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