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, Saint-Gobain Glass says that Planitherm Neo combines ‘outstanding’ thermal performance with a neutral appearance, lower reflection and high light transmission.
The result is said to be 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.
Planitherm Neo 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 at Saint-Gobain Glass 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 into Planitherm Neo 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.
Planitherm Neo supports compliance with current and future Building Regulations across the UK and Ireland, helping a wide range of frame types achieve required whole window U-values. Its balanced combination of thermal insulation and solar gain also contributes to reducing overheating and reliance on ventilation or air conditioning, an increasingly important consideration as homes transition towards low carbon heating systems such as heat pumps.
The glass is suitable for a wide range of applications including residential new build and replacement windows and doors, larger glazed elements such as sliding and bifold doors, and non-residential or mixed-use buildings.
It is available in laminated configurations for enhanced security, safety, acoustic performance and ultraviolet (UV) protection, and can be combined with other Saint-Gobain Glass products to deliver multi-functional glazing solutions.
Planitherm Neo provides fabricators and installers with a future ready solution that combines advanced thermal performance, improved aesthetics and leading sustainability credentials.
*4mm-16mm-4mm with 90% argon gas filling, Planitherm Neo on face 3
**4mm-16mm-4mm-16mm-4mm with 90% argon gas filling, Planitherm Neo on face 3 and 5
