Lead has been used to join small pieces of glass together since the fourth century. This practice has enabled magnificent stained glass windows to be built in churches and cathedrals, and became popular for glazing houses during the Tudor period.
Windows were made in simple patterns of squares and diamonds, and also in more complicated decorative designs. Shapes of glass were cut, often with a red hot poker, and joined together using lead cames.
There are many modern day substitutes, but the original skill of leaded light window making remains unchanged. Tinmans solder and tallow candle is used to join the lead around the pieces of glass, then a hand mixed cement containing carbon lamp black is used to weatherproof the window.