Roof Melt Tablets …
Designed To Prevent Damage To roofs from Ice Dams. Made From Calcium Chloride. Easy to use… Simply toss a RoofMelt Tablet on the roof & let it do the work! No ladders or extension equipment needed. Proven reliable & Inexpensive product. Toss 1 tablet on every sq. ft. of problem area and it begins to work within the hour. No long term adverse effects to the roof or surrounding area.
On a smaller scale, is a problem of house and building maintenance in cold climates. An ice dam can occur when snow accumulates on the slanted roof of a house with inadequate insulation and ventilation in the attic. Warmth coming up through the roof melts the snow. Meltwater flows down the roof, under the blanket of snow, onto the eave and into the gutter, where colder conditions on the overhang cause it to freeze. Eventually, ice accumulates along the eave and in the gutter. Snow that melts later cannot drain properly through the ice on the eave and in the gutter.
This can result in:
Leaking roof (height of leak depends on extent of ice dam). Wet, ineffective insulation. Stained or cracked plaster or drywall. Rotting timber. Stained, blistered or peeling paint.
Under extreme conditions, with heavy snow and severe cold, almost any house can have an ice dam, whereas a house that is poorly insulated and ventilated will have ice dams during normal winter weather. Giant icicles hanging from the eave are one indication of a poorly insulated, poorly ventilated attic.