Carbon balustrade PLANITHERM® NEO

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Overview
PLANITHERM® NEO is a higher-performance low-emissivity glass designed for use in both double-glazed and triple-glazed insulating units. The coating is optimised to reduce external reflection while increasing visible light transmission, supporting daylighting and energy-efficient window and door systems.

Range

• Annealed and toughened: single-stock coated product suitable for use in annealed or heat-treated (toughened) form; heat treatment in accordance with applicable standards (e.g., BS EN 12150) where required.
• Laminated: compatible with STADIP® laminated glass constructions for enhanced safety and acoustic performance.

Benefits

• Thermal insulation: Engineered to deliver centre-pane U-values around 1.0 W/m²·K in typical double-glazed units (DGU) and down to 0.5 W/m²·K in optimised triple-glazed units (TGU) with argon fill.
• Solar performance: Solar factor (g-value) optimised (54% for DGU with 90% argon), enabling improved energy ratings under window and door assessment schemes.
• Daylight and reflection: New surface coating provides higher visible light transmission (~73% DGU) and reduced external reflection (~20% DGU) versus previous generations.
• Environmental profile: Produced on PLANICLEAR® lower-carbon clear float glass (EPD-verified) with manufacturing processes that reuse cullet.

Applications

• New residential windows and doors
• Residential replacement and renovation glazing
• Larger domestic glazed elements (sliding doors, bi-fold, French doors)
• Non-residential and commercial building façades and fenestration

Performance (summary)
Representative performance values (calculated per EN 673 / EN 410 as applicable) for standard unit examples are given for specification and selection.

Technical table (key values by unit type)
Double-glazed unit (DGU) example 4(16)4: Light transmittance (T_L) 73% | External reflectance (R_Le) 20% | Internal reflectance (R_Li) 20% | Solar energy transmittance (T_e) 48% | External solar reflectance (R_ee) 38% | Solar factor g-value (Argon 90%) 54% | Centre-pane U-value (Argon 90%) 1.0 W/m²·K
Triple-glazed unit (TGU) example 4(12)4(12)4: Light transmittance ~59% | External reflectance ~27% | Solar energy transmittance ~34% | Solar factor g-value ~42% | Centre-pane U-value (Argon 90%) ~0.7 W/m²·K
Triple-glazed unit (TGU) example 4(16)4(16)4: Light transmittance ~60% | External reflectance ~27% | Solar energy transmittance ~35% | Solar factor g-value ~43% | Centre-pane U-value (Argon 90%) 0.5 W/m²·K

Processing and handling notes
PLANITHERM® NEO is supplied as a single-stock coated product and must be used in insulating glass units with the coating positioned towards the inside of the cavity (not intended for single-glazing use). It can be toughened or laminated and should be processed following standard industry handling and tempering guidelines.

References and notes
High-performance low-e coatings achieve emissivity levels of 3% or less. Performance data are calculated (e.g., using Calumen) and are correct at the time of publication but may change. Images and example units are illustrative only.

Technical specifications

• Product name: PLANITHERM® NEO
• Brand / manufacturer: Saint-Gobain Glass
• Coating type: Low-emissivity (advanced surface coating)
• Substrate: PLANICLEAR® lower-carbon clear float glass (standard)
• Available forms: annealed, toughened; suitable for laminated STADIP® assemblies
• Coating position: Face 3 for DGUs; Face 3 and Face 5 for TGUs (as applicable)
• Typical DGU composition example: 4(16)4
• Typical TGU composition examples: 4(12)4(12)4 and 4(16)4(16)4
• Light transmittance (T_L): 73% (DGU example); ~59–60% (TGU examples)
• External reflectance (R_Le): 20% (DGU example); ~27% (TGU examples)
• Solar energy transmittance (T_e): 48% (DGU example); ~34–35% (TGU examples)
• Solar factor / g-value (Argon 90%): 54% (DGU example); ~42–43% (TGU examples)
• Centre-pane U-value (Argon 90%): 1.0 W/m²·K (DGU example); ~0.7 W/m²·K and 0.5 W/m²·K (TGU examples)
• Emissivity: ≤ 3% (high-performance coated glass)
• Standards: processing to applicable safety/tempering standards (e.g., BS EN 12150) where required