Discover the revolutionary Tilt and Turn windows by OKNOPLAST – a perfect combination of timeless craftsmanship, innovative technology, and modern design. Ideal for homeowners, architects, and developers seeking versatile and energy-efficient solutions.
Save money
Airtight design keeps your home cool in summer and warm in winter. Save on energy bills!
Save time
Open easily and quickly with one center handle. No more difficult double-hung lifting
Gain silence
The airtightness of the window keeps the inside quiet. No more annoying city u0026 traffic sounds.
Gain security
Thanks to the tilt, you can let in fresh air at the top of the window, while keeping the bottom securely closed.
Gain light
Tilt and turn and quickly clean the windows from inside and let more sunlight to your space.
How Tilt and Turn Windows Work?
Tilt & Turn windows are designed for effortless operation with a single handle:
Tilt for Ventilation: Rotate the handle 90° to tilt the window inward at the top, allowing airflow while keeping it securely locked and safe.
Turn for Full Access: Rotate the handle 180° to open the window fully inward for easy cleaning or increased ventilation.
This dual functionality makes them a practical and stylish choice for any room in your home.
Why Choose Tilt and Turn Windows?
Enhanced Security
Multi-point locking systems and reinforced steel frames provide superior protection for your home.
Simple Maintenance
Inward opening design makes cleaning effortless and safe, even on upper floors.
Energy Efficiency
Advanced multi-chamber profiles, Low-E glass, and triple glazing reduce heat loss and lower energy bills.
Stylish Design
Sleek profiles, customizable colors, and a range of finishes to match any architectural style.
Who Are Tilt and Turn Windows Made For?
Tilt and Turn vs. Traditional Windows – See the Difference
Explore our side-by-side comparison and find the perfect solution for your home or project.
FAQ
Not at all. While some may confuse uPVC with standard US vinyl, European-engineered Tilt and Turn uPVC windows are in a class of their own. Unlike common vinyl products, they contain no plasticizers, which gives them superior stiffness, dimensional stability, and long-term performance. Reinforced with steel and built with multi-chamber profiles, these windows offer exceptional durability, airtightness, and energy efficiency- qualities far beyond what commodity vinyl can deliver.
No. Structural strength in Tilt and Turn uPVC windows comes from advanced system engineering- not just the material. With features like welded corners, steel reinforcements, and load-bearing glazing, our Tilt and Turn uPVC windows can meet or exceed demanding wind-load and design pressure requirements. In fact, OKNOPLAST systems can achieve ratings up to DP 90, making them a robust, high-performance alternative to aluminum or wood windows in both residential and commercial applications.
Tilt and Turn windows provide two distinct operating modes in a single sash, controlled by one handle. Tilt mode allows secure, controlled ventilation or micro-ventilation without full opening, while turn mode provides full inward opening for egress, cleaning, and maximum airflow.
This eliminates cranks, secondary locks, and additional operating hardware. From a building perspective, tilt & turn operation improves usability, safety, and sealing performance while simplifying hardware complexity.
Properly designed tilt & turn windows use pressure-equalized drainage chambers, multi-level gasket systems, and full-perimeter compression sealing.
In tilt mode, the opening is limited and controlled. Wind-driven rain is managed through the frame’s engineered drainage paths rather than relying solely on exterior seals, resulting in consistent water performance under dynamic pressure conditions.
Airtightness is a critical performance feature that improves comfort, energy efficiency, acoustic performance, and moisture control. Indoor air quality depends on intentional ventilation strategies, not uncontrolled leakage through window assemblies.
Tilt and Turn windows achieve very low air infiltration, often up to 30× tighter than a standard US double-hung, while still providing planned ventilation via tilt mode or integration with mechanical ventilation systems. Uncontrolled leakage causes drafts, condensation risk, noise intrusion, and higher HVAC loads. Healthy air comes from ventilation, not leaks!
Tilt and Turn windows offer secure tilt ventilation with limited opening and maintained partial locking. Security performance is specification-driven and can include mushroom cams, reinforced strike plates, lockable handles, laminated glass, and proper anchoring.
When specified correctly, tilt ventilation does not compromise security.
Yes. European frames are typically deeper and designed for through-frame anchoring or installation brackets, allowing precise integration into US wall assemblies. Structural nail-fin options, including aluminum fins, are also available.
Best practice treats the window as part of the continuous air and water control layers, rather than relying solely on a flange-based installation.
Tilt and Turn windows are engineered for staged installation. The sash with IGU can be removed, allowing the frame to be installed independently. After the frame is plumb, level, and sealed, the sash is reattached and adjusted.
This reduces installation weight, improves precision, minimizes frame distortion, and preserves air and water performance.
European windows are custom-manufactured for each project. Large single operable Tilt and Turn sashes (up to approximately 5’ × 5’, depending on loads) as well as curved, arched, and non-rectangular operable units are achievable through engineered solutions.
Size limits are governed by structural, hardware, and performance requirements rather than manufacturing constraints.
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