Patent ID: 7614193

Claim:
A tiled floor structure comprising a plurality of elongated fiber reinforced polymeric planks aligned side-by-side over a horizontal base support; said planks having a first and a second side, a thin base connecting said sides, a plurality of elongated solid ridges extended above said base and extending along a length of said planks establishing open areas there between; said planks having a height measured from said base to an upper surface of said ridges being from about 13/32 inch to about ¾ inch wherein said horizontal base support comprises a plurality of floor joists and a plurality of fasteners extended through said planks into said joists fastening said planks to said joists; a hardening floor tile adhesive material covering said base and filling said areas between said ridges; and a tile layer adhered to said upper surface of said ridges with said entire tile layer above said ridges.