The Advantages And Disadvantages of Adding a Layer of Tiles

House owners frequently question whether it's cost-efficient to add one more layer of roof shingles instead than tearing off the old ones. Putting a second layer traps moisture, which can considerably reduce the lifespan of the roof shingles, eventually costing more in the long run. While including another layer may show up more affordable upfront, the prospective damage and the lowered roofing system life might make it much less of a bargain than it seems.

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