([Click here to download a PDF of this document](https://www.slee.com/assets/CrystalEdge%20GenInfo%20-%20Laminated%20Safety%20Glass.pdf))\n\n# Laminated Safety Glass\n---\nLaminated Glass is two or more sheets of annealed glass that are bonded together using a PVB (polyvinylbutyral) inner layer between the glass sheets to bond them permanently together. Normally this is done in very large "AutoClave Vacuum Chambers" which suck all air out of the laminated joint. Laminated Glass is not as strong as tempered glass of the same thickness, but it withstands considerably more damage and shock without breaking. Instead Laminated Glass stays intact even after receiving considerable damage. Virtually all automobile front and back windshields use Laminated Glass.\n\nYou may have noticed that windshields will crack and the crack will continue to run, but it will stay intact until replaced, whereas the side windows are normally tempered glass and will shatter. Laminated Glass is made in a variety of thicknesses and it is used in many applications where building codes require safety glass to be used. It is a considerably more expensive glass (typically double the cost of annealed glass) and it is a much more difficult glass to cut, edge and drill. We often use this type of glass for signage applications where deep etching is desired (which rules out tempered glass).\n\nLaminated Safety Glass is now required to meet building codes in Hurricane Zones. \n
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