FLOAT GLASS

Float glass refers to glass that is produced by floating molten glass on top of a bed of molten tin (float process). This method was invented in the 1950s by Sir Alastair Pilkington and quickly became the most popular method for producing flat glass. Float glass is made by heating sand, soda ash, and limestone to high temperatures to form a “molten cake”. The molten cake is then poured onto a pool of molten tin, where it floats and spreads out evenly. As the float glass cools down, it becomes solid and flat.

Float Glass Uses

Float glass has been used in a wide range of applications since its invention. It is commonly used in the construction industry for windows, doors, and skylights. It’s use for construction was widespread before the adoption of laminated glass and toughened glass. Due to AS1288 standards, installations for float glass in construction is now limited to areas without risk of human impact. However, float glass is still widely used in the furniture industry for tabletops, shelves, and cabinets.

Benefits of Float Glass

High Clarity – Float glass has excellent clarity and transparency, making it the perfect choice for applications that require a clear view.

Resistance to Chemicals – Float glass is resistant to most chemicals, making it a good choice for applications that will come into contact with harsh chemicals.

Low Cost – Float glass is one of the most economical types of glass on the market.

Easy to Produce – The float process is very efficient and can be easily automated, making float glass one of the most popular types of glass to produce

Smooth – Float glass has a very smooth surface, making it ideal for applications that require a smooth finish.

Low Weight – Float glass is very lightweight, making it easy to transport and install.

Easy to Clean – The smooth surface of float glass is easy to clean and maintain.

Disadvantages of Float Glass

Fragile – Float glass is very fragile and can easily break from any sort of hard impact.

Dangerous When Broken – Float glass can be very dangerous when it breaks because the shards are sharp and can cause serious injuries.

Limited Applications – Float glass is not suitable for all applications due to its fragility. It is not recommended for use in areas where there is a risk of human impact.

Subject to thermal stress – Float glass is subject to thermal stress, which can cause the glass to break if it is exposed to sudden changes in temperature.

How Much Does Float Glass Cost?

Float glass is one of the most economical types of glass on the market. The cost of float glass varies depending on the size and thickness of the glass. For example, 6mm float glass is usually $45 per sqm.

FAQ

Is Float Glass the Same as Annealed Glass?

Yes, float glass and annealed glass are essentially the same thing.

Is Toughened Glass the Same as Float Glass?

No, toughened glass is not the same as float glass. Toughened glass is made by heating float glass to high temperatures and then cooling it rapidly (toughening process). This process makes the glass stronger and more resistant to breakage. Toughened glass is four to five times stronger than float glass.