Q&A: Will magnesium chloride harm my roof or gutters if I use it to attempt to melt an ice dam?

Issue by chirpalina: Will magnesium chloride damage my roof or gutters if I use it to consider to melt an ice dam?
I have listened to that you can place calcium chloride in nylon stockings and toss them above the gutters to melt ice. I have examine in many put NOT to use rock salt. My concern is, does it completely have to be calcium chloride? We have two sorts of ice melt on hand. One particular is a mixture of calcium chloride and magnesium chloride and the other does not say what it is. I

roofing contractor ma