February in Boston is a negotiation between sun and shade: a roof melts by afternoon, the eave refreezes by dark, and by morning there is a ridge of ice exactly where the water wanted to go. Ice Dam Guys works that seam — clearing snow off roofs and rooflines, opening the walks and drives beneath them, and salting the pavement where meltwater keeps coming back. Storm work here arrives in cycles, so the return trip is part of the job; a second foot undoes the first day's clearing. There is real relief in watching a roof edge come clean and hearing water run where it belongs. Winter is not fought so much as managed, one property at a time.