External shades, such as Venetian blinds or roller shutters, are installed on the exterior side of the window and play a key role in preventing overheating, as they block most of the sun’s heat before it reaches the glass. They are used for shading various buildings, from small private homes to large industrial facilities. Compared to indoor shades, external shading solutions are more functional and energy-efficient. However, combining both offers the most optimal solution.
External blinds are one of the most popular solutions among architects and new homeowners, as they allow precise control of light and privacy while providing effective sun protection. Thanks to the adjustable slat angle, it is possible to achieve optimal shading in the room, enhancing overall living comfort.
Key advantages
Light Regulation: By tilting the slats, you can precisely control the amount of light entering the room.
Thermal Insulation: External blinds prevent the glass from heating up, reducing the need for cooling indoor spaces.
Slat Shapes: Various slat shapes are available, including C, T, S, and Z. The S and Z shapes offer enhanced sealing due to additional gaskets, providing better wind protection.
Custom Shapes: Blinds can be custom-made to fit windows of irregular shapes.
Different Installation Options: Available in both surface-mounted and flush-mounted versions, depending on the building's design and requirements.
Insect Screen Integration: Option to include an integrated roller insect screen for added protection against insects.
Color Customization: All aluminum components are powder-coated in RAL colors, and slats are available in various shades to ensure perfect aesthetic harmony with the building.
Different Systems
Classic Blinds – A universal solution suitable for various types of buildings.
MODUL System – Enables the installation of the entire system at once and ensures uniform stacking of the slats.
INVISA System – Ideal for new builds and energy renovations, as it allows for fully concealed installation of the box and side guides.
/en/blint-security-venetian-blinds – Provide a high level of protection and security.

Screen roller blinds are among the most modern and popular solutions for sun protection in residential and commercial spaces. Their key feature is the use of special fabrics that allow control over both light and heat. All TEHROL systems are made from exceptionally durable materials, ensuring high-quality performance.
Key Advantages
Sun Protection: Prevent room overheating and reduce glare, while still allowing natural light to enter.
Aesthetics and Versatility: Available in a variety of materials, colors, and styles to perfectly match the building’s façade.
Light Regulation: Special fabrics enable precise control over the amount and intensity of incoming light.
Weather Resistance: Made from durable materials that provide long-lasting protection against sun, wind, and rain.
Flexible Installation Options: Can be installed either as surface-mounted or flush-mounted, making them suitable for both existing buildings and new constructions. For new builds or renovations, a flush-mounted screen with a concealed box and recessed guides is recommended.
Energy Efficiency: Helps reduce the need for air conditioning during hot summer months.
Shading for Terraces, Balconies, and Pergolas: The ZIP SCREEN system is especially suitable for larger glass surfaces, terraces, and pergolas, providing even shading, UV protection, and improved weather resistance.
Types of Screen Systems
ZIP SCREEN System: An innovative solution with side guides and an integrated zipper, ensuring perfectly tensioned fabric and exceptional wind resistance. The ZIP screen system is ideal for creating a comfortable environment, protecting against prying eyes and insects, and is the most commonly chosen solution.
Classic SCREEN System: An effective shading option for residential and office spaces. The fabric runs in side guides with minimal spacing, though light can still enter through the sides—unlike the ZIP screen.
Box Shapes
Square Box: Clean and structured design that fits seamlessly into modern exterior spaces.
Round Box: Soft, rounded lines for an elegant and fluid appearance.
Flush-Mounted Box: A discreet solution built into the façade for a minimalist look.
Fabric Options
Transparent Fabric (1% and 5%): Maintains natural daylight, reduces glare, and prevents overheating. Offers visibility to the outside while providing a basic level of privacy.
Blackout Fabric (0%): Completely blocks light and ensures full privacy—ideal for bedrooms, conference rooms, and any space requiring total darkness.

Differences Between Roller Shutters, Blinds, and Screen Blinds
Roller Shutters: Ideal for complete room blackout, enhanced security, and additional thermal insulation. They are robust and provide protection from wind, rain, and intruders. Available in pre-installed, flush-mounted, and surface-mounted versions, making them suitable for new builds and renovations.
Venetians Blinds: Allow precise light regulation by adjusting the angle of the slats. They are energy-efficient, prevent glass heating, and ensure optimal ventilation. Slats come in various shapes (C, T, S, Z), with S and Z offering better sealing and higher wind resistance. Installation options include surface-mounted or flush-mounted, making them ideal for modern new builds and renovations.
Screen Blinds: These are the most modern and energy-efficient solution among the three shading systems. Their main advantage is preventing heat buildup in rooms while still allowing natural light to enter. Made from fabrics with varying degrees of transparency, they can be adapted to suit different rooms—more transparent for living areas and more opaque for bedrooms. Screen blinds can be made in large dimensions from a single piece of fabric, making them ideal not only for windows but also for balconies, terraces, and canopies. Their modern design complements contemporary buildings and ensures a minimalist aesthetic appearance.

Shading Control - Manual or Motorized Operation
All shading systems, including screen blinds, blinds, and roller shutters, can be controlled manually or with a motorized drive. For greater convenience, we recommend motorized operation, which allows for easy and flexible regulation of light and privacy. Several control options are available:
Switch: The basic motorized option where the shade is controlled with a switch button. This system requires electrical installation up to the switch.
Remote Control: You can control the shades using a remote control, which can be single-channel or multi-channel. Each channel allows you to set which shade or group of shades you will control.
Automation: Modern automated systems offer complete comfort, energy efficiency, and security. Advanced features such as weather sensors, timers, and mobile applications allow for adjustments based on weather conditions, time settings, or user needs. These systems not only enhance the quality of life but also reduce energy consumption.
