Glass Types

Annealed Glass

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What is Annealed Glass?

Annealed glass also commonly known as float glass, is the basic flat glass product that is the first result of the glass manufacturing process. 

When it comes to residential glass applications, annealed glass sets the fundamental standard. It serves as the base material for the creation of other glass types, including Low-E, laminated, and toughened glass. Each variation possesses distinct characteristics and caters to specific needs, all rooted in the essential properties of annealed glass.

During the production process, annealed glass undergoes a precisely controlled cooling phase. This gradual cooling process effectively eliminates any internal stresses within the glass, due to the annealing procedure.



Float glass is the most widely used form of glass in consumer products, due to both its high quality with no additional polishing required and its structural flexibility during production. It can easily be shaped and bent into a variety of forms while in a heated, syrupy state. This makes it ideal for a variety of applications such as:

  • Automobile glass (e.g. windshields, windows, mirrors);
  • Mirrors;
  • Furniture (e.g. in tables and shelves);
  • Insulated glass;
  • Windows and doors.

Advantages of Annealed Glass

  • Surface strength provides the wind-load performance and thermal-stress resistance needed in most architectural applications
  • Excellent visibility
  • Available in different tones and opaque options
  • Excellent light transmission in clear tone
  • Cost effective when budget is tight

Disadvantages of Annealed Glass

  • Tends to break into irregular, sharp pieces when broken.
  • The strength limitations of annealed glass limit the size of usable pieces. Size limitations are set out by Australian Standards AS1288
  • Limited thermal resistance

Safety glass is a product that is designed to cause minimal injury when it breaks, compared to regular annealed glass. The two most commonly used safety glass products are laminated glass and toughened/tempered glass. Both products have very different and distinct features that provide various levels of safety and security.

Yes, however, the entire panel of glass will usually need to be replaced. We recommend replacing these panels with toughened glass as the hole required for the pet door makes the glass weak. Toughened glass alleviates this issue.

Laminated glass is two pieces of glass laminated together with an interlayer. When it breaks, it cracks but holds together, like a windscreen. Toughened glass is just one panel, but has undergone a process to make it 4-5 times stronger than normal glass. When it breaks, it shatters into thousands of small pieces the size of a fingernail.

Sometimes toughened glass will shatter instantaneously, without an apparent reason. This is often due to a small flaw within the glass itself from manufacture. If the flaw is present, the glass failure could happen at any time.

In the case of a glass emergency, we will attend the same day and can usually complete the repair on the first visit.

We can offer a range of different options to reduce outside noise entering your home. There are specific glass products available now that are designed for noise reduction that will significantly reduce noise without the need to completely replace the windows

We can offer a range of different options to reduce heat entering the home. We offer tinting services, but can also provide options for a high performance glass product specifically designed to reduce the heat entering the home.

Yes, we are an industry leader in the areas of accreditation, qualified tradespeople and safety. We are a founding member of the Australian Glass & Window Association national accreditation program and are active in the glass, glazing & window industry member forums and training programs.

True Blue Glass
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