(For ice dam prevention.)

The wires I had in Massachusetts did not melt thru the ice all the way - they just created "tunnels" in the ice dam that allowed the water to drain down r=the roof, under the ice, and over the roof edge. I see the tunnels at the roof edge in your photo.

Are you having any problems with ACTUAL ice damming/

Thank you so much. we have had a history if ice dams on this area of our roof and installed these last season. the snow in the pic is anout 2.5 or 2 inches of light fluffy snow so I assumed it would melt it into ”v” shapes as the wires are installed in ”v”s. but maybe it doesnt melt all of the snow in contact with the wire as you suggest. So I am not sure what to look for…thanks again!’

If you notice at the edge of your roof you can see the end of the melted tunnels allowing the melted ice (water) from the roof to drain under the ice dam and over the edge...

Ok thank you for this info!👍