That’s ice damming. Basically it can be prevented with proper ventilation of roof cladding/shingle nail board. Normally eaves, baffles, and turtle/ridge vents will be enough to prevent icicles more than. 6 in long.

Ground up plastic FTW: miralax

Once I got a quote from one of the doorstep fliers. The guy defrauded me between 54% and 30% of the original contract price because he waited until he got half up front before saying he would do a job with crappy materials that would only last a year or so unless i paid 54% more. I should have cancelled the check and said get off my property.