We provided customer with heating mat and heating cable layouts, as was requested. Heating mat layout includes few simple turns and small areas where customer advised to carefully detach heating cable from the mesh and using hot glue or HVAC tape secure it on the sub-floor. Heating cable option spaced at 3" in 3-4ft wide rows.
HTMATKIT-120-30 was offered as the best fitted option; HTCBLKIT-120-120: 120ft long heating cable will cover 30 sqft at 3" spacing, which gives perfect layout for this project.