In contemporary architecture, the façade is no longer a simple enclosure element, but a dynamic surface capable of managing light, heat, and aesthetics. When designing a translucent or transparent wall system, polycarbonate proves to be one of the most valued solutions due to its versatility, safety, and technological performance.
The main decision during the design phase concerns the panel type: Multiwall sheets or Solid sheets? Both offer specific advantages depending on the goals of energy efficiency, mechanical resistance, and visual impact.
Facades with Multiwall Sheets
Multiwall sheets feature an internal structure with air chambers (multi-wall cells). This configuration makes them the ideal choice for large continuous facades strongly focused on thermal insulation.
Key Advantages:
- Thermal Insulation and Energy Efficiency: the trapped air chambers within the structure drastically reduce thermal transmittance, maintaining the building’s internal insulation and reducing energy consumption for heating and cooling.
- Structural Lightness: thanks to the internal voids, the weight per square meter is reduced. This allows for lighter underlying support structures (aluminum or steel substructures) and simplifies handling and installation on site.
- Diffused Light and Visual Comfort: the multi-wall structure refracts direct sunlight, diffusing it evenly inside the space without creating glare or harsh shadow zones.
- Cost-Effectiveness for Large Surfaces: the ratio of covered volume, insulation performance, and material cost makes hollow sheets extremely competitive for industrial, commercial, and sports facades.
Facades with Solid Sheets
Solid or compact sheets are flat, homogeneous panels. Visually, they offer the same aesthetic quality as glass while delivering significantly superior mechanical performance and safety.
Key Advantages:
- Crystal Clarity: they offer exceptionally high light transmission (over 89–92%), ensuring maximum visibility outward and a clean, modern, minimal aesthetic.
- Impact Resistance and Anti-Vandalism: with impact resistance up to 200 times higher than glass, solid sheets are virtually unbreakable. They are the ideal choice for facade bases, high-traffic areas, shaped roofing, or environments exposed to vandalism and extreme weather (such as hail).
- High Acoustic Insulation: being a solid, high-density material, it effectively reduces the transmission of airborne urban noise and the sound impact of precipitation.
- Design and Cold-Bending Flexibility: they can easily be cold-curved or thermoformed on site, enabling architects to create fluid facades, curved elements, and bold geometries.
Added Value: Key Technical Aspects to Consider
Beyond panel structure selection, the success of a polycarbonate facade relies on several critical technical factors:
- UV Protection and Longevity: polycarbonate intended for outdoor use requires protection against ultraviolet rays via co-extrusion of high-concentration UV-absorber layers. Uniform and controlled co-extrusion prevents yellowing, loss of transparency, and material aging over time.
- Safety and Fire Performance: high-quality polycarbonate sheets ensure high fire reaction performance, self-extinguishing without flaming droplets—a key requirement for modern building fire safety standards.
- Architectural and LED Lighting: thanks to the light-diffusing properties of multiwall and the clarity of solid sheets, polycarbonate facades integrate seamlessly with LED lighting systems, turning the envelope into a dramatic, illuminated feature at night.
- Sustainability and Recyclability: multiwall polycarbonate is 100% recyclable. Integrating Post-Industrial Recycled (PIR) or Post-Consumer Recycled (PCR) materials into production lines helps secure sustainability credits.
Which Solution Should You Choose?
Choose Multiwall if your primary goal is energy efficiency, thermal insulation, reducing structural weight, and providing soft, comfortable daylight diffusion over large surfaces.
Choose Solid if the priority is glass-like visual transparency, a sleek aesthetic, acoustic damping, or maximum protection against impacts and severe weather.
Extrusion precision: where performance begins
The performance of a polycarbonate facade does not depend only on the characteristics of the material. The extrusion process also plays a crucial role in achieving the quality, consistency and technical performance required by modern architectural applications.
For multiwall sheets, extrusion precision is particularly important when it comes to the internal geometry of the panel. Omipa extrusion technology is designed to achieve consistent cell geometry and uniformity throughout the sheet, supporting the combination of low weight, structural performance and thermal insulation required for architectural applications.
For solid sheets, the focus shifts towards optical quality and thickness control. Precise extrusion helps ensure consistent thickness and high optical clarity, supporting applications where transparency and aesthetics are key requirements.
Co-extrusion can also play an important role in protecting the sheet over time. High-precision application of the UV layer provides uniform surface protection, helping maintain the material’s performance and appearance when exposed to outdoor conditions.
Achieving these results requires precise control throughout the extrusion process, from material flow and melt temperature to sheet thickness and co-extrusion. This is where extrusion technology becomes an essential part of the final quality of the facade panel.
Whether the project requires the complex geometry of multiwall sheets or the transparency and optical quality of solid polycarbonate, the extrusion line plays a fundamental role in achieving consistent results.
Omipa develops extrusion solutions for both Hollow Profile PC and High Optical Quality PC, combining process precision, co-extrusion capabilities and control of the key parameters that influence the quality of the final sheet.
Because behind every high-performance facade, extrusion precision makes the difference.
Discover now Omipa’s extrusion lines for Hollow Profile PC and for High Optical Quality and find the ideal technology for your next project.
