How effective is laminated security glass in preventing smash-and-grab break-ins? Are particular brands or types more effective?
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Laminated glass will not prevent a tooled-up person, intent on entry to a vehicle, from entering it. Laminated auto glass is essentially a safety measure. It does not shatter and splinter throwing bits of glass around on impact. To prevent entry, even by bullets, a special type of laminated 'glass' made from poly-carbonated plastics are used. These are extremely expensive, and are custom made-to-order.
Laminated glass WOULD slow down a casual opportunist, but then so would the absence of easy-to-find rocks, bricks, etc. It takes a hard, heavy object to break through nearly any side glass, so unless you frequent places where rocks are readily found, the only people who might smash-and-grab would be people who're already "armed" to the task - they may be carrying hammers, small battering rams (pipe with handles), and what-have-you.
Your single most secure course of action is to always leave the car empty of valuables that might tempt a thief, then leave the doors UNLOCKED. An unlocked door eliminates the need for any glass breakage... so even if someone got IN, at least you wouldn't have to replace thw windows.
Unless you have 3/8" or thicker solid polycarbonate or wired-glass windows, if I leave the house intent on getting into your car, I WILL GET INTO YOUR CAR... and it won't take me very long.