My guess is that the windshield was treated with a product like Rainex™ after the break occurred. It is almost impossible to remove this type of contamination and perform a good, safe repair. There is a strong likelihood that it will spread later. Explain this to the owner and walk away. It is better to forego the payment than injure your reputation and that of the repair industry.

Your statement, however, that you do “fairly good work” bothers me. If you admittedly do not do excellent work, you cannot succeed in this business. As a start, I would suggest that you purchase a copy of the Auto Glass Technician Repair Manual. I am proud to have served on the books’ committee, which included a group of the most dedicated and knowledgeable people in the industry. It’s an excellent way to learn.

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