The Advantages And Disadvantages of Including a Layer of Roofing Shingles

Home owners often question whether it's economical to include another layer of roof shingles rather than tearing off the old ones. Positioning a second layer catches moisture, which can significantly lower the lifespan of the shingles, inevitably setting you back much more in the lengthy run. While adding another layer might show up more affordable upfront, the possible damages and the lowered roofing life might make it much less of a bargain than it seems.

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