from Jaime in Cedarburg, WI:
#54
Why do icicles form on my roof every winter?
Icicles forming on your roof are often referred to as ice dams.
Icicles forming on your roof are often referred to as ice dams and are caused by snow melting on the roof then freezing as it drips over the eaves. This snow melt is usually due to heat loss from inside the home. A metal roof may reduce snow and ice accumulation by allowing them to slide off, but replacing your shingled roof with a metal roof won't necessarily prevent ice dams. Icicles and ice can still build up regardless of the roofing material. A thorough inspection of what's going on inside the roof or attic is necessary. You should have air leaks sealed by a Home Performance with ENERGY STAR partnering contractor. This should reduce your heating costs and help solve your ice dam problem.
Published Thursday, April 16, 2009