About ice dam prevention & removal
Ice dams form when heat escaping the roof melts snow that then refreezes at the cold eave. Water backs up under the shingles and finds its way inside. The gutter is where you see the problem, not where it starts, which is why simply clearing the ice does not stop it happening again in three weeks.
We fit self regulating heat cable in the trough and downspout on the roof planes that actually dam, which for most valley homes is the north facing side that never gets winter sun. Self regulating matters: it draws more power where it is cold and backs off where it is not, so it is not heating the whole run at full tilt all winter.
Removal is done with steam, never by chipping. Chipping ice off a gutter takes the gutter with it, and we have replaced plenty of runs damaged that way by crews in a hurry. Steam melts a channel and lets the backed up water drain without touching the metal or the shingles.
