Frequently asked
questions.

STEKAR USA supports U.S. façade and building-envelope projects with engineered, manufactured systems like the Multifaçades™ rainscreen cladding, Glass cladding envelopes, and STE-4000 commercial aluminum windows. Available in all 50 states, those systems are backed by design-assist and technical coordination. Our official American website, for all American operations, is stekar.us.

STEKAR USA supports façade and building-envelope projects across the United States with engineered, manufactured systems—including Multifaçades™ pressure-equalized rainscreen cladding, glass-cladding envelope solutions, and STE-4000 commercial aluminum windows. We serve all 50 states with our main place of business in New England (Boston) and back every project with design-assist support and technical coordination from early design through delivery.

For exports and projects in other states in the US, please contact our US team by email at [email protected].

STEKAR USA offers four main product families:

• Multifaçades™ — pressure-equalized rainscreen cladding with a flush window.
• Glass Cladding systems — for elite opaque glass designs and performance.
• STE-4000 — high-performance commercial windows.
• Retrofit solutions — for existing building envelopes.

The Multifaçades™ is a pressure-equalized rainscreen cladding system with a flush window that delivers a clean, modern façade while strengthening durability and overall building-envelope performance. It’s well suited to evolving U.S. energy and performance expectations, helping architects meet higher standards, reduce energy waste for owners, and maintain a consistent, high-end design language across the building.

The STE-4000 is a high-performance commercial aluminum window designed for demanding projects requiring strong envelope performance and durability.

Common applications include multi-residential towers, hotels, institutional buildings, and large-scale renovations/retrofits.

Our façade systems are well adapted to dense U.S. urban environments and large, complex job sites. We support large-scale new construction and deep façade retrofits for multi-residential towers, hotels, institutional buildings, commercial properties, and mixed-use developments.

Ideally during concept, schematic design, or design development. Early involvement helps align performance targets, details, schedule, and budget. We can also support during tender / bid.

Yes. We support design teams with system selection, detailing guidance, performance documentation, and constructability input to reduce risk before procurement.

Yes. With preliminary drawings and performance goals, we can provide budget ranges and value-engineering options (e.g., optimized façade ratios, module strategy, glazing choices).

Yes. We support deep retrofit projects to modernize façades while improving energy performance and occupant comfort.

Often, yes. Many retrofit projects are executed in phases, minimizing disruption and maintaining weather protection during sequencing.

A typical process includes:

• On-site assessment and scope definition.
• Design/engineering coordination and solution selection.
• Phased installation with detailed sequencing for continuity and protection.

A pressure-equalized rainscreen improves moisture management and façade durability, making it especially valuable in wind-driven rain, freeze–thaw, coastal, and other demanding climates.

Yes. The Multifaçades™ is designed to support multiple cladding materials within a consistent façade language, useful for hybrid designs that balance aesthetics and performance.

Yes. The Multifaçades™ is used on both low-rise and high-rise projects. With prefabricated modules we are able to adapt to dense American cities. For demanding towers, it can be coordinated with prefabrication strategies to accelerate enclosure.

Typical options include fixed and multiple operable configurations (project-dependent), allowing ventilation and occupant comfort without sacrificing performance targets.

Yes. The STE-4000 can be coordinated to integrate with curtain wall assemblies, rainscreen façade strategies, and retrofit scopes, depending on the project design.

We work with documented fabrication and project coordination processes, and support teams with the information needed to confirm envelope performance expectations during design and execution.

We coordinate with qualified U.S. façade installers and can provide technical support and installation guidance to ensure systems are executed correctly.

Use the Contact form on stekar.us and share your project location, schedule, drawings (even preliminary), and performance goals. We’ll route you to the right technical contact for next steps. Alternatively, contact our experts directly.