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Verona Roofing: Article About Cold-weather Roofing Materials

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Houses that are located in cold to very cold climates require special attention when it comes to the installation of the roofing system. This is because freezing and subfreezing temperatures and rapid freeze-thaw cycles can have considerable negative effects on the safety and structure of the home. Experienced Verona roofing contractors are able to employ some of the Department of Energy's best practices for creating roofing systems that will deliver optimal levels of protection against harsh winter weather.

In locations that have long, cold and snowy winters, most roofs consist of multiple layers of material. The base layer is the wooden decking, which provides the sloped surface where the waterproof and windproof mat are attached. For cold climates, contractors often use a type of roofing felt that also helps to protect against ice formation. The next layer is the exterior shingles, tiles or panels. The use of clay and concrete is uncommon in places with frequent bursts of cold weather. These materials are more easily damaged when moisture seeps into them and then expands as it freezes. Asphalt and composite shingles, slate and metal roofs are most common in northern climates.

Hustad Companies, Verona roofers can assist you with any questions regarding residential roofing or commercial roofing.

Prevention of ice dam formation is foremost in the design of a roofing system for homes in cold places. Contractors work to ensure that the home has the recommended R value of insulation throughout the entire attic space. Most roofers also go beyond code requirements to make sure the attic has enough ventilation.

Another critical component of the roofing system is its flashing. The metal flashing offers additional protection from flowing water in the roof's valleys and at intersections with a chimney, plumbing vent, wood stove or furnace flue. By providing a watertight seal, the flashing helps to stop melting ice or snow from flowing into crevices and gaps where it could drip down to the roof's wood decking. More extensive flashing is often used on homes in cold locations, especially in places where winter snowfall can measure several feet at a time.

Roofers also take into consideration the volume of water that can result from melting ice and snow. Wider gutters are typically installed to be able to accommodate this amount of liquid. The guidance on best roofing practices suggests that the downspouts divert water at least 3 feet away from the home's exterior walls and foundation. Ideally, the water should empty further away so as not to create an ice formation when temperatures drop below freezing again overnight.

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