Repair Standards & Best Practices

How PVB Interlayers Affect Windshield Repairability

By Windshield Advisor Team
8 min read
March 30, 2026

Key Takeaways

  • The PVB interlayer represents the absolute limit of repair capability - penetration mandates replacement
  • Understanding three-layer construction helps assess whether damage is confined to repairable outer glass layer
  • Visual indicators like white hazing, delamination, and inner surface involvement reveal interlayer penetration
  • Professional assessment with specialized lighting and magnification determines true penetration depth
  • Laminated construction that makes windshields safe also creates distinct repair limitations based on layer involvement

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