Heating wire support meshing and method of constructing a heated surface with same

1. A heating wire support meshing comprising transversely spaced parallel rows of wire support bridge formations formed by vertical flat walls of flexible plastic material interconnected together at their crossings and extending in parallel and transverse relationship to form a mesh with through openings therebetween in which cementitious slurry is adapted to set on a sub-floor by passing through the heating wire support meshing, the through openings extend vertically through the heating wire support meshing for the cementitious slurry to reach the sub-floor through the through openings, said wire support bridge formations having vertical wire receiving slots having an open top end for receiving and guiding an electric heating wire along one or more desired paths between a bottom planar surface and a top planar surface of said wire support bridge formations with said wire extending across said through openings to be embedded in said cementitious slurry, said wire receiving slots each having a protrusion in one or both side walls thereof to define a restricted throat opening in a top end portion of said slot whereby to maintain said electric heating wire captive thereunder, said vertical flat walls being interconnected together at their said crossings by a post junction, and passages formed in said vertical flat walls for communication with adjacent ones of said openings for the passage of said cementitious slurry, and wherein some of said post junctions are attachment posts for securing two or more of said heating wire support meshing together in side-by-side relationship.

2. The heating wire support meshing as claimed in claim 1 , wherein at least some of said wire receiving slots of adjacent parallel wire support bridge formations are aligned in alternating offset relationship for frictional retention of a heating wire disposed therethrough.

3. The heating wire support meshing as claimed in claim 1 , wherein said wire receiving slot has a concavely curved bottom edge and substantially parallel side edges.

4. The heating wire support meshing as claimed in claim 1 , wherein said bottom planar surface is constituted by at least a flat wall portion of said vertical wall.

5. The heating wire support meshing as claimed in claim 4 , wherein said post junction defines a support post having a flat bottom and top surface lying respectively in said bottom and top planar surfaces, said bottom surface also constituting said surface engaging formations.

6. The heating wire support meshing as claimed in claim 4 , wherein said top support formations is constituted by flat top surface sections of said wire support bridge formations and a flat top surface of said post junction.

7. The heating wire support meshing as claimed in claim 1 , wherein said heating wire support meshing has parallel side edges, said attachment posts are defined by said post junctions along two adjacent ones of said parallel side edges, said attachment posts along one of said parallel side edges having male connecting pin formation in a lower section thereof and said post junctions along the other one of said two adjacent parallel side edges having cup formations having an open top end and configured to receive said pin formations of another heating wire support meshing for retention therein.

8. The heating wire support meshing as claimed in claim 1 , wherein said heating wire support meshing constitutes a reinforced sheeting for a sub-floor on which said heating wire support meshing is secured.

9. The heating wire support meshing as claimed in claim 1 , wherein the electric heating wire is retained by glue in said vertical wire receiving slots, said heating wire support meshing flexible mesh being a roll of flexible mesh.

10. The heating wire support meshing as claimed in claim 1 , wherein said wire receiving slots of said wire support bridge formations between two adjacent parallel rows are axially aligned with one another to retain a heating wire along a substantially straight parallel run, said wire being disposed in a serpentine path in said heating wire support meshing and defined by parallel runs spaced a predetermined distance apart as defined by selected ones of said parallel rows, said spaced apart runs of said heating wire being interconnected by an intermediate end portion of said heating wire between said spaced apart runs.