Preventing Ice Dams with an Iowa City Roofer
Ice dams usually form on sloped roofs in climates with freezing and sub-zero temperatures. When the temperatures in your attic are above freezing, it makes the snow on your roof start to melt and run down the sloped roof. When the snowmelt flows down and unites with the frozen eaves, it can refreeze. “If this sequence happens over and over for several days, the frosty snowmelt builds up and creates a dam of ice, and behind water will pool up”, says an Iowa City Roofing Contractor technician. The pooling water can get back up beneath the roof shingles and possibly through the decking and seep into the attic or down the siding. The optimal weather conditions for ice dam formation is usually when the outside air temperatures are in the low 20’s and below consecutively for many days with snow piled up on the roof. Reports show that keeping the attic air temperature under freezing when the outdoor air temperature hits the low 20s can decrease the formation of ice dams. Studies have also shown that sun exposure in the winter has little to no impact on attic air temperature. Instead, its the warm air from the living spaces beneath that penetrate into the attic that is usually the culprit in the development of ice dams. If you notice water stains on an exterior wall or onside on your ceilings where there is snow on the roof up above it, act swiftly and call an Iowa City Roofing to avoid potentially dangerous damages. To help prevent the situation from getting worse here are 5 tips to avoid further damaging your roof:
- DO NOT remove snow often from the roof. It will possibly lead to premature shingle damage.
- DO NOTtry to chip away the ice of an ice dam. Again, it will possibly lead to premature shingle damage.
- DO NOTinstall mechanical appliances such as water heaters in the attic, particularly in cold climates.
- DO NOTuse salt or magnesium chloride to melt the snow from the roof. These chemicals can erode your shingles granules and decrease the life of a metal gutter system. Drainage that contains a lot of these chemicals can kill nearby grass, shrubs, and plants.
- Consult with an Iowa City Roofer for the best possible way to deter ice dams and water damage on your home.
If you need us to come out now because you have a roof leak, you can reach us at (319) 981-3775.