Roof Melt, 60 Tablets

Reviewers need to understand how these are supposed to work. They don’t break up ice dams. They undermine them. They are a preventative. They’re of vastly more use before the ice dams start holding back melt water! Toss them onto the roof above the freeze line – about as high as you’d normally roof rake the edges, say 5-10 feet up, depending on the roof and normal melt/freeze spots (for a cathedral ceiling, say, with melt / refreeze areas high up the roof, land some at above it in that area). Do so after the snow accumulates, but before there are serious icicles/dams. They will last a for a few storm cycles and ensure that each melt sees a channel cut under the ice dams so water doesn’t back up. My roof still developed 5″ thick ice dams at the edge of one bad roof area, but it never backed up any water. Use them every 6-8 feet along the roof and use more in any particular trouble spot. You can put them at different heights on the same section just to make sure you have channels for the water to flow if you might get ice forming higher than the roof edge. You can toss a couple extra up in each area for each storm, too, just in case. They are much cheaper than dealing with water incursions.