Malarkey shingles are designed and engineered to beautify and protect a home. As part of the roof system, the shingles and underlayment limit the impacts of weather and exterior elements on the structure. Much like wearing a waterproof jacket, shingles and underlayment act as a protective membrane, but require ventilation from heat and moisture beneath. Without proper ventilation, many problems can arise, including a reduction in service life from the shingles themselves, according to Dr. Joseph Lstiburek of the Building Science Corporation.
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