March 11, 2015 5:51 am
Ice dams are partly the result of heat that escapes from inside a home into the attic, which then warms the roof during the winter months. When combined with the sun and fluctuating temperatures, this causes the snow on the roof to partially melt and then accumulate at the edge of the roof or overhang. Once eaves are full, the ice begins to expand under the shingles, causing them to separate.
Before this ice melts, homeowners are urged to call a certified roofing professional. Homeowners that take the unnecessary safety risk of trying to remove ice dams themselves can only remove the superficial ice, and end up causing far more damage to the shingles and eaves.
To prevent ice dams entirely, have a roofing inspection to ensure your attic is well ventilated. If the attic is cold, there will be less melting and refreezing on the roof. Ensure your attic is properly insulated in addition to the attic floor to minimize heat from rising from the house and causing snow to melt, which will reduce the risk of dangerous mold. Install an ice and water shield membrane under your roof covering at least six feet from the eaves line, and remove leaves from eaves regularly so melting snow and ice can flow.
Source: Integrity Roofers
Published with permission from RISMedia.