Heavy, wet snowfalls like those common to the Minneapolis/St. Paul area can put a strain on the roofs of most Twin Cities area homes. However, with a steel roof over your head -- like one from Kassel & Irons installed by Quarve Contracting -- you can rest easy, knowing your roof will hold up to harsh Minnesota winters. A little snow isn't a problem for most roofs. However, certain winter conditions can put extreme stress on traditional roofing materials such as asphalt, wood shakes, or tile. If that's your roof, you should be aware of these things:
- Heavy, wet snow. Inch for inch, wet snow weighs much more than dry snow, resulting in an increased weight load. If your roof and/or its underlying structure are older, this could be a problem.
- Deep snow build-up. Even light snow, if left to accumulate to significant depth, can strain a roof. Some home owners use roof rakes to periodically remove snow so that it doesn't build up. Unfortunately, when used improperly roof rakes can cause shingle or shake damage. And then there's the safety factor of crawling up on a ladder in snowy or icy winter conditions.
- Wind-driven snow. Snow accompanied by strong winds can be blown under the edges of shingles, causing them to lift up. Repeated melted and re-freezing of the trapped snow can then damage or loosen them.