You do not have to seal the concrete to use our 7700 Series adhesive. To ensure that your concrete is totally impervious to liquids, we would recommend sealing the concrete. Even though the glue will prevent most liquids from going through or coming up, if there were a gap in the glue when applying it, there would be potential for liquids to get through. What you could also do is seal your rubber flooring with our Rubber Floor Finish and Sealer which will fill in the small pores in the floor. ...
You do not have to seal the concrete to use our 7700 Series adhesive. To ensure that your concrete is totally impervious to liquids, we would recommend sealing the concrete. Even though the glue will prevent most liquids from going through or coming up, if there were a gap in the glue when applying it, there would be potential for liquids to get through. What you could also do is seal your rubber flooring with our Rubber Floor Finish and Sealer which will fill in the small pores in the floor. Between the rolls, we would recommend using our Seam Sealer glue. This will help to create a watertight flooring surface.