Snowfall Classifications
Roof Ice Dam Potential

Summit Ice Melt Systems’ Radiant Edge™ provides protection against dangerous ice dams and icicle formations.
Our full spectrum of offerings will protect your property in extreme, moderate, and mild snowfall areas.

Snowload Classifications for different snow and ice dam areas

  • Annual snowfall greater than 100”
  • Greater than 15” snow on roof most of the winter
  • New England High Risk and Resort Areas
  • Mountain areas, El. 6,000’+: High Sierras, Cascades, Colorado Rockies, Utah, Sun Valley, Big Sky, Jackson Hole Ski Areas
  • Mountain areas: B.C., Northern Idaho, Northern Montana Ski Areas, Canadian Rockies
  • Lake Effect Snow Areas: Northern Michigan, Northern Ohio, Upstate New York

Class 1 Area Product Recommendations

  • Annual snowfall less than 100”
  • Typical snow accumulations of 6” to 15” on roof for most of the winter
  • Typical areas: Upper Midwest to East Coast, Western U.S. high plains and high deserts, Eastern Wyoming and Eastern Colorado to Wisconsin, Illinois to Massachusetts

Class 2 Area Product Recommendations

  • Annual snowfall less than 30”
  • Typical snow accumulations of up to 6” on roof for most of the winter
  • Typical areas: New Mexico to Middle East Coast

Class 3 Area Product Recommendations

Download:

Printable Snow Class Map PDF