Damming evidence accumulates for Oklahoma roofs
Ice damming and related roof leaks used to be a rare thing in Oklahoma, and probably still is, statistically. But the blizzard of 2011 will probably make it five years in a row for Sooner roofs to suffer from such normally northern exposure.
Howling wind could lessen the chances for damaging ice damming, a rooftop phenomenon that is supposed to be statistically rare in Oklahoma but has been a feature of winter for several years in a row now.
Videoview all videos
Feb 3Heavy snow on a roof can lead to ice damming and leaks....
Feb 2The local response to the Oklahoma blizzard and what you...
Feb 1Footage of the snowy conditions from Edmond this morning.
Feb 1Snow expected to end in Oklahoma City this afternoon, but...
Feb 1Watch the snow fall in Edmond between 10:30 p.m. Monday...
Feb 1What the roads were like this morning driving to work.
Feb 1From extremistpullup in Edmond: throwing a pot of boiling...
Feb 1The Oklahoman's Bryan Painter is spending the day...
Feb 1NewsOK's Todd Fraser and Tim Money are providing a live...
Feb 1Snow hit OKC hard early Tuesday, here's a look at the...
Feb 1Blizzard conditions across the Oklahoma City metro and...
Photoview all 243 photos
NewsOK Related Articles
How to make a snow rake, from The Weather Channel:
Ice damming is when ice builds up along the edges of roofs and backs up under shingles and flashing. When it melts, it damages roofs and causes leaks, usually along walls. On-and-off-again melting is the worst.
“The good thing for roofs is that the snow is blowing. It most likely won't accumulate on your roof, unless it drifts there,” said Brad Neff, owner of Heartland Roofing in Bethany. “If your roof is such that it has walls that butt up to low-sloped areas or flat areas, it is possible that large amounts of snow will accumulate. On flat roofs this can create the potential for collapse.”
Drifting snow on roofs can create problems, however, if not removed, said Mark Lenzer, vice president of Metro Roofing and Reroofing America, two companies in Oklahoma City.
“The freeze-thaw cycle will cause ice dams to intensify, especially because the wind is not only causing snow drifts on roads, it is creating them on roofs too,” Lenzer said, noting that freezing and thawing and refreezing aren't the only causes of damming. “Homes that are not properly insulated and not properly ventilated — then the bottom layer of snow could melt, then refreeze causing an ice dam quickly, too.”
Neff said damming can sneak up on a homeowner because its effects occur after the worst of a storm has passed, Neff said.
“Ice damming can cause large amounts of interior water damage as the temperature warms and the ice and snow melts,” he wrote Tuesday on his blog at www.trustheartland.
Ice and water shields can be applied to roofs to prevent damming.
Stay off the roof
Both Lenzer and Neff stressed that no homeowner should climb onto a roof to remove snow or ice.
Neff had some other tips for dealing with rooftop snow: