The Pros and Cons of Including a Layer of Tiles

Home owners typically question whether it's cost-effective to add an additional layer of roof shingles rather than tearing off the old ones. Putting a 2nd layer traps dampness, which can significantly lower the life expectancy of the tiles, eventually setting you back much more in the lengthy run. While including another layer might appear less expensive upfront, the possible damage and the reduced roof life might make it less of a deal than it seems.

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