The Pros and Cons of Including a Layer of Roofing Shingles

Property owners typically question whether it's cost-efficient to add one more layer of roof shingles instead than tearing off the old ones. Placing a 2nd layer catches wetness, which can dramatically reduce the life-span of the tiles, eventually costing much more in the long run. While adding another layer may show up cheaper upfront, the possible damage and the reduced roofing life may make it much less of a bargain than it seems.

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