The Pros and Disadvantages of Including a Layer of Roofing Shingles

House owners typically wonder whether it's affordable to include one more layer of tiles instead than tearing off the old ones. Putting a 2nd layer catches wetness, which can dramatically decrease the life-span of the shingles, inevitably setting you back more in the long run. While including an additional layer could appear more affordable upfront, the possible damage and the decreased roof life might make it less of a bargain than it appears.

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