Types of Traditional Glass

• Slab glass was made by pouring liquid glass onto a flat surface, sometimes in a mold. Crown glass was made by spinning hot glass into a large disc called a table. This was then cut into sections and used to make window-glass panes. Cylinder or broad glass was made by blowing a cylinder of glass, then cutting it open and unrolling it. Traditional glass would be held in place with small nails and linseed putty or lead flashing.
  
  

Features of Traditional Glass

• Crown glass panes vary in thickness and some of them have semi-circular lines on the surface. The center of table glass has a distinctive raised circular pattern in the middle. Cylinder glass has a slight ripple and long, straight bubbles. Imperfections in traditional glass give a shimmering effect. Traditional glass may offer a warmer light than modern glass.
  
  

Considerations

• Traditional glazing can be an important factor in the ambiance of a building. When you're replacing traditional glass, you need to ensure that the new glass is a good match. Modern glass looks different than handmade glass and the effect can be jarring.