Profile: Cristal Glass & Glazing (Leics) Ltd. is a supplier of sealed double glazed units. Our product line includes glass and lead work accessories. Our other accessories include finger pulls, plunger locks, ratchet locks, sliding door track, shelf bearers, and shelf brackets. Our different types of glass include safety & security, greenhouse, and toughened glass. Our lead work options include soldered joints, aged lead, borders, colored film, and single or double glazed units.