Abstract: A method of applying a filled thermosetting resin flooring material to an essentially horizontal substrate to produce a non-porous protective coating which involves compounding a mixture of a thermosetting resin with an aggregate, the mixture using a low level of 50 to 75% aggregate by weight; the aggregate being a graded aggregate that will produce maximum packing and having a specific gravity of over 2.0; the thermosetting resin having a room temperature cure and a viscosity less than 1500 cps; spreading or troweling the mixture on the substrate producing a resin rich layer upon setting; and broadcasting onto the resin rich layer an aggregate having a specific gravity of over 2.0, thereby producing a finished flooring material containing 76 to 82% filler by weight.