Saint-Gobain Glass is launching PLANITHERM NEO, an advanced thermal insulation glass, designed to meet the evolving performance, aesthetic and sustainability requirements of the UK window and door market.
Designed for use in both double-glazed and triple-glazed units, Planitherm Neo combines outstanding thermal performance with a neutral appearance, lower reflection and high light transmission. The result is a single low-emissivity solution that supports fabricators and installers in delivering high performance windows and doors across residential new build, renovation and mixed-use applications.
It achieves a centre-pane U-value of 1.0 W/m²K in a double-glazed unit and as low as 0.5 W/m²K in a triple-glazed unit. Its optimised solar gain helps improve Window Energy Ratings and Door Energy Ratings, with a g-value of 54%* in double glazing and 42%** in triple glazing. High light transmission ensures interiors benefit from maximum natural daylight while maintaining excellent thermal insulation.
Mike Butterick, Marketing Director said; “Due to launch in March 2026, Planitherm Neo’s advanced surface coating delivers a more neutral colour, reduced reflection and improved optical clarity, which is particularly important in triple-glazed configurations.”
Planitherm Neo has been developed as a single stock product for both double and triple-glazing and can be used in annealed or toughened form, with the coating retaining the same technical and aesthetic characteristics after toughening to BS EN 12150. This simplifies stockholding and production planning for glass processors, while improved durability and ease of processing help ensure consistently high-quality finished units. Sustainability is built in as up to 40% of the glass used in its manufacture comes from reclaimed and remanufactured pre-consumer and post-consumer recycled glass, with no impact on product quality, performance or appearance. This is enabled through Saint-Gobain’s Glass Forever circular economy programme which reduces raw material extraction, energy consumption and embodied carbon, supported by published Life Cycle Assessment data and an Environmental Product Declaration.
