The underlayment is the layer between the roofing shingles and the roof deck. Its main purpose is to act as a waterproof barrier and to protect the roof deck from damage.
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The underlayment is the layer between the roofing shingles and the roof deck. Its main purpose is to act as a waterproof barrier and to protect the roof deck from damage.
Read MoreSubscribe to Exterior Source Virginia's Blog
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