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What you need to know about windshield replacement

If you are looking for auto glass replacement in Sydney, then you need to first know some things about this part of the car.

Windshields as a safety feature

The windshield is a barrier that acts to protect the driver from the dust and debris on the road but there is another important function of the windshield that most people do not know about. It is not just a cover from dirt and dust but also a safety feature that is for structural safety in case of an accident, mostly in situations if the car rolls over. You could say that this is the vehicle’s third most important safety feature after seatbelts and airbags.

Windshields are vital to the functioning of airbags. They are like a basketball backboard for the airbags which means that a damaged windshield will cause the airbag to not function properly and that may prove to be life-threatening when you are on the road. The reason for all this happening is that it may inflate outwards instead of towards you or even if it does work, it may not absorb any pressure at all because the broken windshield will push out.

When the technician starts working to replace your windshield there are scratches at the points where the glass is bonded to the car. Before a new glass can be installed, the scratches have to be treated with paint and techniques to prevent rusting, otherwise, the external elements will cause the scratch points to start rusting and that is the last thing you want to happen.

Before you hire services for auto glass repair in Sydney, there are a few questions that you need to ask them first:

  • Is the new glass OEM?
  • Did they remove the brand labeling from the windshield?
  • Does the new glass come in the same shade band as your old windshield?
  • Is the new windshield the same color as the old one? Because glass is never clear, it is always colored so ask the service provider about the color before time.
  • Does the windshield come with a rain sensor?
  • Is the new glass heated? This is important because some seller tries to sell you a non-heated glass and charge you the price of heated glass.
  • Does the windshield have the right bracket for holding your rear view mirror properly?
  • Is the new windshield consisting of the same third visor as your old one?
  • If there are scratches made at the time of glass replacement or any damages are done by the technician, does the company cover for the damages?

Types of glass

The basic composition of a windshield is two layers of glass with a laminate material in between the two layers, also known as laminate glass. This laminate glass sounds like a simple filling but is more than that. It is very strong and practically unbreakable and for this reason, if a large object hits the windshield, it does not break very easily and can withstand further damage. This strong laminate glass combined with the force of which the whole windshield is fixed to the body of the car can provide sufficient protection to the driver in case of accidents.

The other mirrors of the vehicle usually have tempered glass which means that they do not break down like normal glass (in the form of shards) instead of the break into tiny pellet-like pieces so that the occupants of the car do not sustain damage. In some cases, there is laminate glass on the side and rear windows.

Adhesive used to hold the windshield

Today’s vehicles use urethane to hold the windshield, more like glue it to the car. Once applied it can take some time to dry and set (usually about 2-4 weeks) once the setting process is complete, the windshield can sustain a pressure of approximately 500 pounds per square inch. This is one reason why you could never push out your windshield even if you wanted to. There are some types of urethane that can start working just one hour after the glass is installed so you can go back to driving without worrying if it will hold or not.

Once the installation is complete, do a quick but careful inspection of the vehicle so that you can be sure that no urethane has oozed out during the fitting of the glass. It could leak out to the edges or the inside of the car and you need to get this fixed as soon as you can before the glue hardens. In order to be applied, the adhesive has to be heated and then allowed to cool. Temperature makes a huge difference in how the glue will set, so, get the replacement done inside a garage or workshop and not outside in the sun.


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