Three bathrooms under tile floor

Added: 08/21/2013
Due to shape and dimensions of heating area of Bath#4, after 3 rows of heating mat, heating cable need to be free of mesh and installed at 3" spacing in 13" wide row.
The following materials were suggested for the bathroom #2: HTMATKIT-120-50; bathroom #3: HTMATKIT-120-15 and bathroom #4: HTMATKIT-120-20