Even with our often mild, North Carolina weather, snow and ice happen. Even one storm can cause roof damage.
Many people may not think about it but snow and ice are among the worst that mother nature can throw at a roof. They cause degradation of materials, failure of sealants, and ice damming can cause severe home damages.
Metal roofing is known for its ability quickly shed snow loads. Typically this happens when the sun comes out and radiant heat passes through the snowload, warming the metal a bit. In some cases, it may be advisable to have snowguards on the roof which are small protrusions designed to hold the snow a bit and break it up into smaller chunks when it does slide. This can be a good idea particularly over doorways and delicate shrubbery.
Homeowners are cautioned that, while metal roofing tends to shed snow quickly, it still doesn’t make up for the lack of attic insulation and ventilation which can result in ice damming on the roof. Generally speaking, snow and ice on a metal roof will not cause damage but if ice damming occurs over the eaves and water starts to pool and freeze higher up on the roof, it can be a challenge for any roof system. When replacing your roof, it is a good idea to ask your contractor whether you need any additional or improved attic ventilation to guard against winter damages.
If you experience a damaging snow or ice storm this winter, find out if a metal roof would be a good solution. We’re always available to answer your questions, and share our experience in the local market. McCarthy Metal Roofing Systems of North Carolina.
Next up in our Extreme Weather Series: Wind Resistance