Masterssurfacing tech Specializes in waterproofing, of below grade walls, slabs, parking structures,and walkways. Masters sufacing tech prepare and apply decorative, and waterproof coatings to Decks, Balconys, and Old Concrete. Masters surfacing tech also does decorative concrete staining,and sealing. Synthetic Sport surfacing for tennis courts,Basketball courts, Weight rooms,and Racket ball. Masters Surfacing Tech Serves all of LA, Orange, San Bernadino, and Riverside Counties.