Window from the Renaissance period, ca. 1535-1660. Renaissance windows are leadlights with small panes of crown or cylinder glass. The glass was sometimes coloured and there were often elaborate carvings on the frame, sash and posts of the windows, which conformed to classical proportions.
Around 1350, a roller was developed to press lead into cames. With this invention, leadlights could be manufactured quickly and inexpensively, and by the 1400 and 1500s, leadlights had become common in regular houses.