They work effectively in temperatures down to 25 degree fahrenheit.
Roof ice pellets.
Ask this old house general contractor tom silva explains the best ways to keep your roof and gutters free from those dreaded ice dams.
Pure organic ingredients ice melt pellets 8 lb 1 gallon 100 pet safe concrete safe snow ice melt calcium chloride pellets powerful fast acting 4 3 out of 5 stars 20 27 99 27.
The hockey puck sized pellets only melted a whole in the ice or snow resulting in no improvement to eliminating ice dams or snow from the roof.
In the end i still had to remove the snow and ice.
I ordered extra to have on hand for the future.
The roof melt ice melt is designed to eliminate the need to climb onto roofs while melt snow.
After doing as best i could i then placed more of the tablets in the problem areas with no improvement just holes where i had placed them.
These melted the ice dam from below allowing water to drain off the roof.
See below for a shopp.
The picture below is the ice dam that fell off my roof after melting from below.