TempZone Cable over Ditra Heat Mat
Spacing on Ditra Heat membrane is about: 2.5", 3.5", ...
Ditra recommends for their heating cable a 3.5" spacing.
At 3" spacing TZ cables generate 10-12 W/sq ft.
TZ heating cable spaced at 2.5", is going to generate about 12-14 W/sq ft.
TZ heating cable spaced at 3.5", is going to generate about 8-10 W/sq ft.