The single most important roofing component for Wisconsin homes. DT Exteriors installs Owens Corning WeatherLock on every roof — exceeding code requirements — because our climate demands it.
Wisconsin experiences 120+ freeze-thaw cycles per year, creating ice dams that force water underneath shingles and into your home. WeatherLock® Ice & Water Barrier is a self-sealing membrane that creates a waterproof layer between your roof deck and shingles. While Wisconsin code only requires it at eaves, DT Exteriors installs it at all vulnerable areas: eaves, rakes, valleys, around chimneys, skylights, vent pipes, and all roof penetrations. This costs roughly $300-$800 more than code-minimum but prevents $10,000-$50,000 in interior water damage.
Poor insulation or ventilation lets warm air rise into the attic, heating the roof deck from below.
Snow melts on the warmed portions of the roof and water runs down toward the eaves.
The eave (overhang) is cold because it's not above heated space. Water refreezes, creating an ice dam.
Water backs up behind the dam and forces itself under shingles, into the roof deck, and into your home. Without ice & water barrier, there is no secondary defense.
Granulated Surface
DT Exteriors Preferred
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As an Owens Corning Preferred Contractor, DT Exteriors gives you access to the full Total Protection Roofing System with extended manufacturer warranties. Get a free, no-obligation estimate today.