Do You Overlap Roof Underlayment?

Do You Overlap Roof Underlayment? Overlapping roof underlayment is a common practice to ensure that the underlayment is at least two layers thick. This practice is especially important on low-slope roofs, where the underlayment should overlap 19 inches. On steep-slope roofs, the underlayment should only overlap 2 inches. Overlapping roof underlayment is a matter of […]

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