May 31, 2025

Roofing Maintenance

How To Know If It’s Time To Replace Your Roof Underlayment

What is Roof Underlayment?

Underlayment is a layer of material placed directly under your shingles or tiles. It serves as an extra layer of protection against Phoenix’s harsh weather. There are different types, such as asphalt-saturated felt, synthetic underlayment, and rubberized materials. Regardless of the type, underlayment plays a critical role in your roof’s longevity and effectiveness.

Signs Your Underlayment Needs Replacing

Several signs indicate that it’s time to replace your roof’s underlayment:

  1. Water Leaks or Stains: If you notice water stains on your ceiling or walls, the underlayment may be compromised and no longer protecting your roof.
  2. Age of Your Roof: Most underlayment materials last around 20 years. If your roof is older than that, it may be time for a replacement.
  3. Visible Damage: If your roof is missing shingles, or if you notice cracked or torn underlayment when inspecting the roof, it’s a sign of wear and tear.
  4. Sagging Roof: Sagging in specific areas could mean that the underlayment is no longer holding up the structure properly.

If your roof’s underlayment is damaged or outdated, moisture can seep into the layers below the shingles, causing wood rot, mold, and other costly issues. Replacing the underlayment prevents these problems and ensures your roof functions properly for years to come. If you notice any signs of wear, it’s time to consult a professional and discuss replacement options.