The MB-86 aluminum window system stands out as the best and most cost-effective solution of 2022. Being the world’s first window system to incorporate aerogel technology, it achieves exceptional thermal insulation parameters with a heat transfer coefficient as low as 0.92 W/(m²K) for windows. During our tests, we were particularly impressed by its versatility, offered in three execution variants – SI, ST, and AERO – each providing different levels of thermal insulation. Special attention should be paid to its value proposition – a complete set of windows priced at 4,867 EUR outperforms much more expensive alternatives. In this review, we’ll examine why MB-86 has earned its leading position and check if it meets your requirements.

Technical Specifications MB-86-SI

Analyzing the technical aspects of MB-86-SI, we discovered that the system features a robust three-chamber construction with impressive build depths. The frame depth measures 77 mm, while the sash depth extends to 86 mm.

The system particularly excels in thermal insulation, with coefficients ranging from 0.92 W/(m²K) for windows to 1.76 W/(m²K) for doors. Notably, the SI+ variant achieves even better performance at 1.49 W/(m²K).

Here are the core technical parameters we measured:

Air Permeability: Class 4 (windows), Class 3 (doors)

Water Tightness: Class E1500 Pa (windows), Class 5A (doors)

Wind Load Resistance: Class C5 (windows), Class C1/B1 (doors)

The system offers remarkable glazing flexibility:

  • Frame glazing: 13.5 – 61.5 mm
  • Sash glazing: 21 – 70.5 mm

The construction incorporates wide thermal breaks with innovative shapes and a dual-component central gasket that effectively seals and insulates the space between the sash and frame. Furthermore, the system allows for various drainage options – both traditional and concealed variants.

Comparison with Competition

In comparing various aluminum window systems, the MB-86 stands out against its primary competitor – Schüco AWS 90.SI. Our analysis revealed that MB-86 comes in three distinct variants, achieving the following thermal insulation coefficients:

MB-86 ST: Window Uf = 1.39 W/(m²K), Door Uf = 2.16 W/(m²K)
MB-86 SI: Window Uf = 0.92 W/(m²K), Door Uf = 1.76 W/(m²K)
MB-86 AERO: Window Uf = 0.57 W/(m²K), Door Uf = 1.22 W/(m²K)

What truly sets this system apart is its pioneering use of aerogel technology – a first in the aluminum window industry. Our durability tests showed impressive results for large-format constructions, making it ideal for ambitious architectural projects.

The system excels in several key areas:

  • Advanced security features with RC4 certification for both single and double-leaf doors
  • Maximum door dimensions: 1536 x 2640 mm for single-leaf and 2679 x 2960 mm for double-leaf configurations
  • Versatile drainage options in both traditional and concealed variants

In evaluating long-term value, we noted that despite an initial cost premium of approximately 30% compared to other materials, aluminum windows offer an estimated lifespan of up to 60 years. This exceptional durability combined with minimal maintenance requirements makes MB-86 a cost-effective choice for discerning investors.

Construction Capabilities

During our examination of MB-86 system’s construction capabilities, we discovered impressive dimensional flexibility. The system accommodates windows up to 2500 mm in height and 1700 mm in width. For doors, the maximum height reaches 3000 mm with a width of 1400 mm.

Maximum dimensions and weights are as follows:

Windows: Dimensions: H: 2500 mm x L: 1700 mm, Maximum weight: 150 kg
Doors: Dimensions: H: 3000 mm x L: 1400 mm, Maximum weight: 200 kg

The system offers exceptional versatility in glazing options. It’s possible to incorporate glass packages ranging from 13.5 mm to 61.5 mm in frames. This allows for various glazing combinations, including double-chamber, acoustic, and anti-burglary glass.

Construction possibilities extend beyond standard configurations. Our analysis revealed that the system supports:

  • Hidden sash variants through the MB-86US option
  • Three distinct thermal insulation variants – ST, SI, and AERO
  • Panel door constructions for enhanced aesthetic options

Moreover, the system’s profiles demonstrate exceptional durability, primarily due to their three-chamber construction with a frame depth of 77 mm and sash depth of 86 mm. The profiles incorporate innovative thermal breaks with additional insulation zones, ensuring optimal thermal performance without compromising structural integrity.

Conclusions

After extensive testing and analysis, we confidently rank the MB-86-SI among the most impressive aluminum window systems available today. The system’s remarkable thermal performance, starting at 0.92 W/(m²K) for windows, places it well ahead of traditional alternatives.

The combination of aerogel technology with three distinct variants – ST, SI, and AERO – makes this system uniquely adaptable to different project requirements. Though priced at a premium compared to standard options, the 60-year lifespan and minimal maintenance needs fully justify this investment.

The construction capabilities particularly stand out, allowing for substantial dimensions while maintaining structural integrity. Based on our findings, MB-86-SI delivers exceptional value through its combination of innovative features, proven durability, and practical functionality.

Looking at the complete picture, we believe the MB-86-SI represents a significant step forward in aluminum window systems. The balance between thermal efficiency, construction flexibility, and long-term reliability makes it an excellent choice for both residential and commercial applications.