Independent NM inspector
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Roof Doctor NM
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Underlayment matters more than the shingle

On tile and metal roofs, the underlayment is what actually keeps water out.

Tile sheds most water — but anything that gets through has to land on the underlayment. Felt-paper underlayments fail in 15–20 years. Synthetic and self-adhered underlayments go 30–50.

When we lift tiles to replace underlayment, we can usually reuse 90%+ of the tile.

Cheaping out on underlayment is the single most common mistake we see on otherwise-nice tile installs. The labor to redo it later is the same; the material upgrade is a few hundred bucks.

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