ELI5. Why is transparent glue not glass friendly?

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I have been seeing a lot of adverts for transparent, waterproof glue which works on everything but glass. Since glass is not mentioned in the ads, I am scared to use it on a windscreen.

What happens when you use it on glass?

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4 Answers

Anonymous 0 Comments

When it comes to using glue on glass, particularly a car’s windscreen, it’s not just about the adhesive’s ability to stick. The properties of glass require adhesives specifically designed for it, which can bind at a molecular level and remain clear for visibility. Most general-purpose glues aren’t formulated for this kind of task and may not create a durable or safe bond.

Moreover, the structural integrity of a car windscreen is vital for safety; it’s part of the vehicle’s protective shell. Using an inappropriate adhesive can weaken the windscreen, potentially making it more dangerous if you’re in an accident. For automotive glass, specialized products and professional application are essential to ensure the repair holds up under the stresses of driving.

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