Snow On Roof Ice Dam

The calcium chloride will eventually melt through the snow and ice and create a channel for water to flow down into the gutters or off the roof.

Snow on roof ice dam.

Without proper roof snow removal the ice that develops may grow large enough to prevent water from melting snow from properly draining off the roof. This only occurs when part of your roof warms to above 32 degrees f warm enough to melt the snow while the roof edge remains below freezing. Call us at 1 800 ice dams if you have an ice dam on your roof and live anywhere in the lower 48 including in hard hit minnesota illinois and wisconsin. See below for a shopp.

You can end the leaks with a phone call to ice dam guys. We are properly licensed bonded and insured and are the top rated ice dam removal company in the us. Stop ice dams with a cold roof. Freezing at the eave impedes the drainage of meltwater which adds to the ice dam and causes backup of the meltwater which may cause water leakage into the roof and consequent damage to the building and its contents if the water.

For ice dams to form there must be snow on the roof and at the same time higher portions of the roof s outside surface must be above 32 degrees f freezing while lower surfaces are below 32f. Why do i need to get the snow removed from my roof. What is an ice dam. Ice dams may form when water from melting snow freezes into ice at the edge of your roofline.

Nonuniform roof surface temperatures lead to ice dams. The water trickles down between the layer of snow and the shingles until it reaches the eave of the roof which stays cold because it extends beyond the side of the house. The meltwater then runs down toward the colder eave overhang where it freezes. Ask this old house general contractor tom silva explains the best ways to keep your roof and gutters free from those dreaded ice dams.

Heat loss from a house snow cover and outside temperatures interact to form ice dams. An ice dam forms when the roof over the attic gets warm enough to melt the underside of the layer of snow on the roof. Ice dams form when the snow melts on an upper warmer part of a roof. As the ice accumulates it forms a blockage that prevents the snowmelt from flowing off the roof.

If necessary use a long handled garden rake or hoe to push it into position. When the water is unable to drain from the roof it may then back up underneath. Ice dams and icicles form when the snow melts runs down your roof and refreezes near the edge.