Pilkington Optitherm™ S3 Plus

Pilkington Optitherm™ S3 Plus

Pilkington Optitherm™ S3 Plus is a UK-manufactured, off line coated, low-emissivity (low-e) glass intended to reduce Ug-values to 0.6 W/m²K* when incorporated in triple glazing units while minimising levels of external reflection.

Key Benefits for UK Fabricators & Glaziers

• Low-e coating reflects heat back into the room, reducing heat loss
• Ug-values of 0.6 W/m²K* when incorporated in triple glazing units
• Intended to reduce external reflection when used in triple glazing units when compared to Pilkington Optitherm™ S1 Plus
• Neutral view through glass due to high light transmission
• Achieves Class C to EN 1096-3
• Single stock product available in annealed form and can be toughened without compromising performance or appearance

Applications in the UK Market

Pilkington Optitherm™ S3 Plus is suitable for a wide range of residential and commercial projects where triple glazing units are required:

• New-build housing/buildings
• Replacement windows
• Conservatories and garden rooms
• Energy-efficient upgrades to existing homes

Ready to specify Pilkington Optitherm™ S3 Plus?

Contact your local Pilkington UK representative today for technical guidance, samples, or details of your nearest UK supplier.

May 2026
Version UK:1.1.1