Company Performance Metrics
Slenderpane manufactures slim double glazed units and related glass products for trade customers involved in window and door refurbishment. The company focuses on thin, thermally efficient insulated glass units that replicate the appearance of single glazing for use in heritage and conservation settings. Its units use warm edge spacers, inert gas
fills, and soft coat glass to improve U values while maintaining narrow sightlines suitable for traditional glazing bars. Slenderpane also produces bespoke leaded units and small-format toughened glass and slim double glazed units down to 100 x 100 mm. It supplies joiners, construction firms, and architects, offering made-to-order specifications via a trade-only quotation process. Slenderpane provides warranties on its units and publishes technical guidance and documentation to support correct glazing and installation.
