Why We Use ECLAZ® by Saint-Gobain: A Superior Low-E Glass for High-Performance Windows

When it comes to high-performance windows, the frame matters—but the glass is where most of the performance happens.

At LuxHaus, we don’t treat glazing as a commodity.

We carefully select glass technologies that deliver measurable improvements in:

  • Energy efficiency
  • Indoor comfort
  • Natural light
  • Long-term performance

One of those technologies is ECLAZ® by Saint-Gobain—a next-generation low-emissivity (Low-E) glass designed for high-performance window systems.

What Is ECLAZ Glass?

ECLAZ® is an advanced low-E coated glass developed by Saint-Gobain, engineered to optimize the balance between:

  • Thermal insulation
  • Solar heat gain
  • Natural daylight

Unlike conventional low-E coatings, ECLAZ is designed to maximize light transmission while maintaining high insulation performance.

That combination is what makes it particularly effective in modern, high-performance buildings.

Why Glass Selection Matters in High-Performance Windows

Most people focus on double vs triple-pane.

But the real difference often comes down to:

👉 the quality of the glass coating

Standard low-E glass forces a compromise:

  • Either better insulation
  • Or more daylight

ECLAZ removes that trade-off.

1. More Natural Light Without Sacrificing Performance

One of the biggest advantages of ECLAZ glass is its exceptional transparency.

It can achieve light transmission levels of up to 80%, significantly higher than many standard low-E products.

What this means:

  • Brighter interiors
  • Reduced need for artificial lighting
  • Better connection to outdoor views

In fact, increased daylight has been linked to improved comfort, productivity, and well-being.

2. High Energy Efficiency and Thermal Performance

ECLAZ is engineered to deliver strong insulation performance while allowing beneficial solar gains.

Key capabilities include:

  • Low U-values (high insulation)
  • Optimized solar factor (heat from the sun when you want it)
  • Reduced heat loss in winter

This balance helps reduce both:

  • Heating demand
  • Cooling demand

And contributes to overall building energy efficiency.

3. Better Comfort in Both Summer and Winter

One of the biggest challenges in glazing is balancing:

  • Winter heat retention
  • Summer overheating

ECLAZ is specifically designed to handle both.

It can:

  • Block a significant portion of solar heat in summer
  • Retain interior warmth in winter
  • Reduce overheating periods significantly

This creates a more stable and comfortable indoor environment year-round.

4. No Compromise Between Double and Triple Glazing

One of the reasons we use ECLAZ is that it helps eliminate the traditional trade-off between:

  • Double glazing → more light
  • Triple glazing → better insulation

ECLAZ can combine both benefits:

  • Light transmission similar to double glazing
  • Insulation performance comparable to triple glazing

This is a major advantage in real-world projects.

5. Designed for Passive House and High-Performance Buildings

ECLAZ glass is widely used in:

  • Passive House projects
  • Net-zero buildings
  • High-performance residential construction

It supports:

  • Lower energy consumption
  • Better building envelope performance
  • Compliance with advanced energy codes

This aligns directly with how LuxHaus approaches window systems.

6. Neutral Aesthetics and Architectural Flexibility

Beyond performance, ECLAZ offers:

  • Neutral color rendering
  • Minimal mirror effect
  • Clear, natural appearance

This allows architects to maintain design intent without compromise.

Why LuxHaus Uses ECLAZ

At LuxHaus, we don’t choose materials based on brand recognition—we choose them based on performance outcomes.

ECLAZ allows us to deliver:

  • Higher daylight quality
  • Better thermal performance
  • Improved occupant comfort
  • Stronger energy efficiency

Without forcing trade-offs.

And that’s exactly what high-performance buildings require.

The Bottom Line: Glass Is the Real Performance Driver

Most window companies talk about frames.

But in reality:

👉 Glass is where the performance happens.

By using advanced low-E technologies like ECLAZ, we ensure that every LuxHaus window delivers:

  • Maximum efficiency
  • Maximum comfort
  • Maximum long-term value

FAQ: ECLAZ Glass and High-Performance Windows

What is ECLAZ glass?
ECLAZ is a high-performance low-E glass by Saint-Gobain designed to improve energy efficiency while maximizing natural light.

Is ECLAZ better than standard low-E glass?
Yes. It offers higher light transmission and better energy performance without compromise.

Can ECLAZ be used in triple-pane windows?
Yes. It is commonly used in both double and triple-glazed systems.

Does ECLAZ improve energy efficiency?
Yes. It reduces heat loss and optimizes solar gains, lowering overall energy consumption.

Final Thought

If you’re designing a high-performance building, the question isn’t just:

“What window system should I use?”

It’s:

“What glass is inside that system?”

Because that’s what ultimately determines performance.