How We Remove Ice Dams Safely
We use a commercial steamer that delivers very hot steam at low pressure. The wand melts through ice like a hot knife, so we can open drainage channels and lift away blocks of ice without striking the shingles.
Steam melts ice instead of breaking it, and the pressure stays low enough that it does not strip granules off asphalt shingles or drive water under the laps. That is the key difference between professional removal and the methods that cause most of the damage we repair.
Axes, chisels and hammers crack shingles, which are brittle in the cold, and punch holes through the underlayment beneath them. Pressure washers cut through ice but also cut into the shingle surface, while dumping more water onto a roof that is already struggling to drain.
Rock salt and calcium chloride pucks are no better. They corrode metal flashing and eavestroughs, damage plants below the eaves and leave most of the ice in place.
On site, we open the downspouts and eavestrough outlets first so the meltwater has somewhere to go. We then cut channels through the dam to relieve the backed-up water, and remove the rest of the ice if you want the eaves fully cleared.
Channel cutting is faster and costs less, while full removal takes longer but leaves nothing to refreeze. Our crew works from secured ladders and fall arrest equipment set up to Ontario Regulation 213/91, with Working at Heights training under Ontario Regulation 297/13.