Calcium chloride is the best salt to use on ice dams according to handyman glenn haege.
Salt in gutters to melt ice.
Simply put and ice melt system heats your gutters keeping that water from refreezing and causing mounds of ice.
If you have a gutter that drains near or on a concrete sidewalk or driveway the corrosive effect will quickly become apparent.
This can corrode the gutter and cause harm to vegetation when the ice melts and sprinkle it inside the gutters.
Then lay the filled pantyhose horizontally on the ice in your gutter.
The simplest one is to take a few handfuls of calcium chloride not rock salt.
In many cases this is an extremely simple and cost effective solution that can help prevent costly water damage to your home.
There are two options for heated gutter systems.
Putting some on the edge of the shingles can also inhibit ice dam formation.
This is where an ice melt system comes in.
Tie a long string to the filled pantyhose so you can easily retrieve them later.
You will find damage to that area over the course of the winter.
It melts ice faster than sodium chloride does works at lower temperatures than sodium chloride and also melts larger volumes of ice.
The tablets are specially formulated with calcium chloride so they won t harm your exterior like products such as rock salt which could rust your gutters and damage shingles.
There are other solutions to your ice dam issues.
Because salt is corrosive it can have a very damaging effect on sidewalks over time.
It is not as likely to stain or cause corrosion as sodium chloride but it can damage wooden gutters.
Salt will eventually melt and can damage any grass or plants below your gutters.
The key to using ice melt to prevent ice dam roof leaks and plugged gutters in winter is two fold.
Hold off on the ice melting home remedies professionals don t agree on whether you can rely on home remedies such as pouring salt on the ice or filling a stocking with salt and placing it on top of the downspout so it slowly melts the ice.
That s a low performing method that might clear the gutter but not the downspout miller says.