Auto Windshield Replacement: Essential Insights on Resin

by | May 31, 2024 | Uncategorized, Windshield Repair

The windshield replacement industry in the United States is a significant sector, valued at an impressive $2 billion according to the National Windshield Repair Association (NWRA). Given this substantial market, understanding the various resins used in windshield repair and replacement is crucial. Prompt action is necessary when your windshield is damaged, as it directly impacts the safety of both the vehicle owner and other road users. This article delves into the specifics of windshield repair resins, their types, and their safety implications.

The Importance of Windshield Repair Resins

Windshield repair resins are critical in ensuring the structural integrity and clarity of the windshield. Historically, these resins have been composed of hazardous chemicals such as acrylic acid and methacrylic esters. According to the World Health Organization (WHO), prolonged exposure to these chemicals can lead to severe health issues, including cancer and birth defects. They are also known to cause eye and skin irritation upon contact.

Evolution to Safer Resins

In response to the health risks associated with traditional resins, the industry has developed crystalline windshield repair resins. These newer resins are formulated with human-friendly chemicals and do not contain corrosive acids. They meet the high clarity and strength standards set by the NWRA, ensuring both safety and performance.

Types of Crystalline Windshield Tints

Crystalline resins come in various tints, each designed for specific applications:

  • Amber Tint: Reduces light refraction in breaks involving crushed or cracked glass, such as star and combination breaks.
  • Blue Tint: Commonly used at the top fringe of the windshield and for repairing bull’s-eyes and combination breaks.
  • Gray Tint: Camouflages excess reflectivity in star breaks.
  • Green Tint: Used in windshields with green top fringes and for repairing bull’s-eyes and combination breaks.

Standards and Quality

The American National Standards Institute (ANSI) has established guidelines that govern windshield repair. The quality of the repair is largely determined by the type of resin used, which in turn depends on the extent of the damage and the temperature conditions during the repair.

Viscosity: A Key Factor

Viscosity is a crucial factor in selecting the appropriate crystalline resin. It affects the resin’s performance under different weather conditions and types of damage:

  • Low Viscosity Resins: Ideal for cold weather conditions and situations requiring high optical clarity due to their excellent hiding and wetting action properties.
  • Medium Viscosity Resins: Best suited for hot weather conditions and large combination breaks, thanks to their superior elasticity and adhesion properties.
  • High Viscosity Resins: Used in environments with excessive moisture. Their enhanced elasticity and adhesion properties allow them to withstand prolonged contraction and expansion.

Interesting Statistics

The windshield repair and replacement industry in the U.S. is valued at $2 billion. Source: NWRA According to the WHO, exposure to chemicals like acrylic acid and methacrylic esters can lead to severe health issues, including cancer and birth defects. Source: WHO The ANSI has set stringent standards for windshield repair to ensure safety and quality. Source: ANSI


Understanding the types of resins used in windshield repair and their safety implications is essential for vehicle owners. The shift towards safer, crystalline resins marks a significant advancement in the industry, ensuring both the safety and satisfaction of consumers. By adhering to the standards set by organizations like the NWRA and ANSI, the industry continues to prioritize the well-being of its customers. This article provides a comprehensive overview of the windshield replacement industry, focusing on the importance of using safe and effective resins. For more detailed information, you can refer to the NWRA and WHO websites.