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Custom Metal and Glass – Design, Fabrication and Installation
 
“There are many different types of glass associated with architectural glass.” Architectural Glass
Architectural Glass Terminilogy Get a Project Evaluation
Architectural glass is glass that is used as a building material, fulfilling an architectural need on a building or another structure. Examples of architectural glass include glass walls, glass ceilings, and class facades.

There are many different types of glass associated with architectural glass.

Cast Glass
Cast glass is a defining characteristic of early Roman architecture and was used heavily in the villas of Herculaneum and Pompeii

Cast Plate Glass
The process of creating cast plate glass was first discovered by James Hartley in 1848. In this process, glass is taken from a furnace in large iron ladles carried on slings that are running on overhead rails. The glass is put from the ladle into a cast iron bed rolling table and is rolled out into a sheet by an iron roller. The glass is both rolled and trimmed while it is still hot and therefore soft.

Crown Glass
Crown glass is created when hot blown glass is cut open opposite the pipe blowing the hot air. The glass was then rapidly spun on a table prior to cooling. Centrifugal force from this process resulted in the glass being shaped into a flat round sheet. This glass was then cut to fit rectangular windows, however, the place where the pipe had originally been located for the hot blowing left a design referred to as a “bullseye”. The bullseye often resulted in optical distortions on the glass.

Cylinder Glass
Cylinder glass is manufactured by glass being blown into a cylindrical iron mould. The ends are then removed and an incision is placed down the center of the cylinder. This cut cylinder is then heated in an oven, which results in the cylinder unrolling to create a sheet of glass.

Float Glass
The float glass process, which accounts for over 90% of the world’s flat glass, was invited by Sir Alastair Pilkinton in 1950. In this process, molten glass is poured into the end of a tin bath. The glass floats on the tin, and as it spreads out along the bath, it evens out, creating a smooth surface on both sides of the glass. The glass then cools and solidifies as it continues to travel across the molten tin. A lehr, which is an oven, is then used to anneal the glass.

Fourcault Process
Fourcault process glass, also known as drawn sheet glass, is made by placing a leader into a vat of molten glass. The leader is then pulled straight up. As the leader comes out of the vat of molten glass, it is covered in a thin film of glass, which hardens right after being pulled out of the molten glass. This process is repeated.

Polished Plate Glass
Polished plate glass is first either rolled plate glass or sheet glass. Typically the pieces of glass are at fist uneven, creating visual distortions. The rough uneven areas were then ground down and polished clear, resulting in clear glass.

Rolled Plate Glass
Also referred to as figured glass, in rolled plate glass, the plate is cast between two rollers, with one of them carrying a pattern which is then incorporated into the glass. Sometimes - but not often - both rollers will have a pattern. While the glass is still soft, these rollers are rolled across the glass, resulting in patterns in the glass.
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