When you look closely at your car windows or windscreen, you might spot a small code etched into the glass. One of the most common is “AS2.” It tells you the type and safety rating of the glass used in your vehicle.
What Is AS2 Glass?
AS2 is a safety rating for automotive glass. It stands for “American Standard 2.” Despite the name, it’s recognised internationally, including across the UK. AS2 glass is tested for impact resistance, optical clarity, and durability. It’s usually found in side and rear windows, not the windscreen.
Key Features of AS2 Glass
- High impact resistance
- Clear visibility
- Shatters into small, blunt pieces
- Durable in day-to-day use
How Does AS2 Compare to AS1?
Your windscreen usually has an AS1 rating, while side and rear windows use AS2. Here’s a breakdown:
| Feature | AS1 (Windscreen) | AS2 (Side/Rear Windows) |
| Light transmission | 70% minimum | 70% minimum |
| Impact resistance | Very high | High |
| Glass type | Laminated | Tempered |
| Breakage pattern | Cracks but holds shape | Shatters into small bits |
AS1 glass holds together on impact, preventing debris from entering the car. AS2 glass breaks safely to let you exit quickly if needed.
Why AS2 Certification Matters
AS2-certified glass plays a vital role in keeping you safe:
- Reduces injury risk: Breaks into small, dull fragments.
- Meets legal standards: Complies with UK vehicle safety rules.
- Good visibility: Meets optical clarity requirements.
- UV protection: Many AS2 panels filter harmful rays.
- Tougher over time: Withstands normal road stress.
Need to Replace Your Car Glass?
If your side or rear windows are damaged, replace them with certified glass. Using low-quality alternatives can compromise your safety and may breach regulations. Go to trusted windscreen fitters or use a mobile windscreen replacement service to get it done right.
FAQs About AS2 Glass
Can I replace AS2 glass with a cheaper option?
No. It could be illegal and will reduce your car’s safety rating. Stick with certified options.
Is AS2 glass harder to clean?
No. Use standard glass cleaner. Avoid abrasive pads to prevent scratches.
Can a chip in AS2 glass be repaired?
Small chips often can be fixed. Larger cracks usually need full windshield replacement.
Is AS2 glass more expensive?
Only slightly. Most of the cost is in labour. It’s worth it for the added safety.
How do I check if my glass is AS2?
Look for the AS2 mark etched into the corner. If you don’t see it, ask a professional.
What’s Next for Car Glass?
Glass safety standards are evolving. Here’s what to expect:
- Tougher side glass for larger vehicles
- Smart glass that tints or shows data
- Better insulation to reduce noise
- Glass that helps manage cabin temperature
Trusted Glass Repair and Replacement
If you need a quick repair, full windshield replacement, or expert mobile windscreen replacement, make sure the work meets UK standards. Certified glass and proper fitting keep you and your passengers safe. Always go with professional windscreen fitters who know what they’re doing.
