Windows and doors: A big showdown on opening styles! What’s the best way to open the windows in your home?
Release date:
2025-09-01
Performance Advantage: When fully open, the top-hung design doesn’t占用 indoor space, allowing curtains to open and close effortlessly. Even if a playful child climbs onto the windowsill, there’s no risk of falling outside. The window can be opened just 10 cm wide—wide enough for ventilation but too narrow for fingers or objects to reach inside—making it ideal for use when no one is home. Ventilation is natural, with air flowing smoothly in from the side of the window into the room.
Casement windows and doors
Applicable door and window types: broken-bridge aluminum doors and windows, aluminum-clad wood doors and windows, and PVC steel doors and windows.
To open: Turn the control handle 90 degrees toward the inside of the glass, then pull the handle to open the door or window.
Closing operation: Push the sash fully closed, then rotate the control handle 90° in the opposite direction of the opening action.
Performance advantages: Casement windows typically use rubber seals, which provide better sealing performance compared to wool seals. For areas with multiple opening sashes, two-point or top-and-bottom locking mechanisms are often employed to ensure a tight seal. As a result, casement windows generally outperform other types in the three key performance categories—wind resistance, water tightness, and air tightness. They also offer a larger opening area for improved ventilation, and interior-opening designs make window cleaning much more convenient.
Performance flaw: Casement windows are further divided into outward-opening and inward-opening types. Outward-opening windows are prone to damage during strong winds. Inward-opening windows, when opened, take up valuable indoor space; children playing carelessly might bump into the window corners, and curtains can’t be drawn closed while the window is open. Additionally, if the quality isn’t up to standard, leaks may occur.
Top-hung and casement windows and doors Applicable door and window types: broken-bridge aluminum doors and windows, aluminum-clad wood doors and windows.
Operation mode: It offers two opening options—either casement or top-hung—achieved through different hardware connection methods. When opened in the top-hung position, the window creates a roughly 10-cm-wide gap at the top, with the open section suspended in mid-air.
Top-hung operation: Rotate the control handle 180 degrees inward toward the window sash, then pull the handle to open the window in a top-hung configuration.
Closing operation: Push the sash to the closed position, then turn the control handle in the opposite direction of the opening motion until it locks into the closed position, securing the sash.
Performance Advantage: When fully open, the top-hung design doesn’t占用 indoor space, allowing curtains to open and close effortlessly. Even if a playful child climbs onto the windowsill, there’s no risk of falling outside. The window can be opened just 10 cm wide—wide enough for ventilation but too narrow for fingers or objects to reach inside—making it ideal for use when no one is home. Ventilation is natural, with air flowing smoothly in from the side of the window into the room.
Performance flaw: The top-hung casement design combines the benefits of a standard casement window while eliminating all its drawbacks—so much so that it’s actually quite challenging to pinpoint any real weaknesses. The only minor issue lies with the hardware components. Specifically, the specialized hardware required for this system is relatively complex, demanding high-quality hinges to ensure smooth operation and prevent potential malfunctions or premature wear over time.
Double-hinged doors and windows (Active and Passive Sashes) Applicable Window and Door Types: Broken-bridge aluminum doors and windows, aluminum-clad wood doors and windows, and wooden windows.
Active sash operation: The active sash can be opened or closed independently, functioning either as a standard casement or a top-hung casement.
To open the follower sash: First, fully open the driver sash in a flat, outward position. Then, push the upper and lower control pins of the follower sash outward to their full, extended positions—this will unlock and allow the follower sash to open.
Closing procedure: First, rotate the follower door to the closed position. Then, turn the upper and lower control pins in the opposite direction of opening until they lock into place, before finally closing the main door.
Performance advantages: Flexible operation, large opening area, excellent ventilation and daylighting, and a sleek, elegant appearance. It also boasts superior sealing, soundproofing, thermal insulation, and water-resistant properties, making window cleaning and maintenance exceptionally convenient.
Performance drawbacks: Casement windows that open inward take up indoor space and pose a risk of accidental bumps or injuries. They also make it inconvenient to use curtains while the window is open. If the window quality isn’t up to standard, it may even allow rainwater to seep in. On the other hand, casement windows that open outward are less convenient for installing and using screens, and their operation requires extra space outside the wall. Additionally, they’re more vulnerable to damage—or even falling and causing injury—in strong winds, and they may also suffer from air leakage.
Sliding and Pivoting Window (Unidirectional and bidirectional sliding) Applicable window and door type: PVC windows.
Push-and-pull operation: The window sash is opened and closed by applying external force to drive the rollers rolling along the track.
Performance Advantage: Sliding and casement windows are economical and practical window-door options, commonly used in indoor spaces such as balconies, kitchens, bathrooms, and stairwells. They feature a sleek, modern design with large window frames that offer unobstructed views and excellent natural light penetration. These windows allow for flexible placement of vents and ventilation points, while also maximizing interior space since they don’t intrude when opened. Additionally, their single-plane operation makes it easy to install and use screens or curtains seamlessly.
Performance Defect: Two windows cannot be opened simultaneously—they can only be fully opened halfway at most, resulting in relatively poor ventilation. Additionally, since sliding windows have tracks at the bottom, they fail to achieve a completely tight seal, making them highly prone to drafts. If the craftsmanship is subpar, their performance in areas like sealing, thermal insulation, and soundproofing will suffer significantly.
Foldable doors and windows
Applicable door and window types: broken-bridge aluminum doors and windows, aluminum-clad wood doors and windows, and PVC steel doors and windows.
Operation instructions: Open the priority-opening unit to ensure all opening sashes are in the casement position. Then, starting from the inside and moving outward along the frame, rotate the folding sash handle inward by 90 degrees. Finally, pull the folding sash handle to bring all sashes together, fully opening the window.
Closing procedure: Fold the fan sections inward one by one toward the frame, then reverse-rotate the control handle to lock each section securely. Finally, close the priority-opening unit to complete the closing process.
Performance advantages: Features a sleek and elegant design, innovative styles, diverse color options, ease of use, smooth sliding action, and effectively saves space by minimizing door footprint. Ideal for use in bathrooms, restrooms, workshops, shopping malls, office buildings, and other spaces.
Performance flaw: The hardware is complex and requires precise installation; when children are playing nearby, be cautious to prevent fingers from getting caught.
Above is the editor's summary of the pros and cons of common door and window types—feel free to choose the right home décor options based on your specific needs.
When using doors and windows daily, you’ll open and close them multiple times each day—so remember to "open gently and close gently." No matter what type of door or window it is, following the proper usage techniques will significantly extend its lifespan. After all, how long your doors and windows last ultimately depends on the care you show during those everyday moments of opening and closing.
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Contact Information
Contact Address: No. 7, Industrial Avenue East, Songxia Industrial Park, Shishan Town, Nanhai District, Foshan City
Warren Doors and Windows, south of Fangshan Road and west of Dongtai Road, Dongcheng Subdistrict, Linqu County, Weifang City, Shandong Province
Become A Deaters :Info@wolunmc.com
National customer service hotline:+86 400-676-9888
WhatsApp:+86-18866798677
Beijing customer service phone number:+86 010-68319888
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