Warm Edge Technology
Energy efficiency and comfort through innovation.
Warm Edge spacer technology improves the thermal performance of glazing systems by replacing traditional aluminium spacers with low-conductivity materials. This reduces heat loss, condensation, and thermal bridging around the perimeter of glass units, contributing to improved energy efficiency, indoor comfort, and long-term performance.
Why Choose Warm Edge Technology
- Improved thermal efficiency – lower U-values and reduced heat transfer.
- Condensation control – minimises moisture build-up on glass edges.
- Enhanced comfort – consistent indoor temperature throughout the room.
- Longer lifespan – prevents stress cracks and seal failure.
- Eco-friendly choice – lowers energy use and carbon footprint.
How Warm Edge Works
Traditional aluminium spacers conduct heat, allowing warmth to escape at the edge of the glass.
Our Warm Edge spacers are made from insulating composite materials such as stainless steel and polypropylene, dramatically improving energy retention.
They act as a thermal break between panes in double or triple glazing, ensuring maximum performance across the entire window unit.
1.Up to 65% better insulation than aluminium spacers
2.Compatible with double and triple glazing
3.Works with argon, krypton, or xenon gas-filled units
4.Spacers available in black, grey, white, or bronze.
5.Fully compliant with BS EN 1279 and Building Regulations (Approved Document L)
Applications
- Windows and doors
- Rooflights and skylights
- Glass façades and curtain walls
- Conservatories and glazed extensions
Whether for new installations or replacement glazing, Warm Edge Technology can be integrated into any No1 London glass system for improved energy efficiency.
Choosing Warm Edge Technology means:
3.Lower condensation risk
4.Environmentally responsible building performance
Service Areas
We install Warm Edge glass systems across Fulham, Chelsea, Kensington, Hammersmith, Putney, Wimbledon, Chiswick, Westminster, the City, and Surrey, helping homeowners and developers meet modern energy standards without compromising aesthetics.
Smarter Glass. Warmer Homes.
Upgrade your glazing performance with No1 London’s Warm Edge Technology — the smarter way to achieve comfort, efficiency, and sustainability.
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