Ice dam risk in Gretna, LA
Ice dams in Gretna, LA: how often
0.0 dam days a winter
Almost never. An ordinary house in Gretna sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Gretna averages 0 inches of snow a year and about 0 days with snow on the ground. Too little lies on the roof for long. The conditions that make a dam need all three at once: snow, cold at the eave and heat above it.
Do you need to do anything in Gretna?
- Nothing for ice dams. If you are buying here and an inspector mentions water at the eaves, ask what they saw: it is far more likely a gutter, flashing or drip-edge problem than ice.
Snowy places are not always the worst: why snowfall misleads.
Gretna next to nearby towns
Gretna ranks 19 of 35 Louisiana cities here for ice-dam days, behind New Orleans at 0.0 days.
- New Orleans, LA 12 mi, 0.0 days
- Kenner, LA 14 mi, 0.0 days
- Slidell, LA 31 mi, 0.0 days
- Mandeville, LA 32 mi, 0.0 days
- Covington, LA 39 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Terrytown 3S, 1.1 miles from Gretna. A dam day is a day with snow on the roof and freezing at the eave while heat or sun melts the snow above it. This describes a normal winter, not this one.