Aluminum double-hung windows feature a vertical sliding system with two independently operable sashes-one at the top and one at the bottom-enabling flexible ventilation, space-saving operation, and easy maintenance.
Chalco offers customized aluminum double-hung window solutions for residential homes, apartments, hotels, schools, renovation projects, and commercial buildings, supporting thermal break aluminum profiles, Low-E insulated glazing units (IGUs), sealing systems, sash balance hardware, insect screens, and a range of surface finishes.
In addition to aluminum double-hung windows, Chalco also supplies a broader range of finished aluminum window systems for residential, commercial and project-based applications.
Aluminum double-hung windows offer advantages in flexible ventilation, space efficiency, ease of cleaning, and project-specific configuration. Compared with single-hung or some traditional window types, double-hung windows can offer more flexible airflow control, easier maintenance, and better facade adaptability..
To meet varying project demands for ventilation, energy efficiency, maintenance convenience, and usage intensity, Chalco offers multiple types of aluminum double-hung windows to help clients select the most suitable solution.
Suitable for standard residential and apartment projects
Designed for projects requiring enhanced thermal insulation
Ideal for multi-story buildings with easy maintenance access
Designed for schools, office buildings, and public facilities
Beyond standard single-unit double-hung windows, Chalco also provides combination configurations—such as double-hung windows paired with fixed window units, side windows, transoms or multi-unit horizontal assemblies—tailored to opening dimensions and facade design requirements. These solutions provide larger daylight areas, consistent architectural appearance and project-level customization.
The performance of aluminum double-hung windows stems from their integrated system design, including aluminum frames, dual operable sashes, balance mechanisms, locking hardware, weather seals, drainage channels, glazing units, and optional insect screens. Chalco configures frame structure, glazing options, hardware systems, sealing methods, and surface treatments based on building type, rough opening size, installation location, and project specifications-to better address requirements for ventilation, energy efficiency, air/water tightness, safety, and long-term serviceability.
Project performance can be discussed in reference to standards such as NAFS / AAMA performance classes, PG ratings, ASTM E283 / E330 / E331, as well as EN 14351-1, EN 12207, EN 12208, and EN 12210. Actual performance ratings, test configurations, and available documentation should be confirmed against specific product data and project requirements.
Chalco offers single-pane, double-glazed, triple-glazed, Low-E, warm-edge spacer, and inert gas-filled glazing options for aluminum double-hung windows. Glazing configurations can be selected based on project needs for energy efficiency, daylighting, sound insulation, and climate zone compliance, with performance evaluated using metrics such as U-Factor, SHGC, VT, AL, and CR.
Chalco provides sash balance systems, locking hardware, travel limiters, anti-drop mechanisms, tilt-in cleaning hardware and aluminum window screens. Hardware selections can be tailored to usage frequency, safety standards and maintenance needs, supporting smooth operation, secure locking and reliable daily use.
Chalco supports multiple aluminum surface treatment options, including powder coating, PVDF coating, aluminum anodizing, wood-grain transfer printing and custom RAL colors, together with decorative glazing bar designs. Surface finishes can be selected according to architectural appearance, environmental exposure and project specifications, with coating performance referenced to AAMA 2603, AAMA 2604 or AAMA 2605 as appropriate.
Color selection for reference only. Slight variations from the physical item may occur.
Chalco's aluminum double-hung windows serve project needs across residential, hospitality, educational, renovation, and commercial sectors. Leveraging extensive experience in fenestration system integration, we support exterior window specifications and bulk supply for diverse building applications.
Selecting the right aluminum double-hung window involves more than just the window style-it requires consideration of building type, rough opening dimensions, climate conditions, maintenance approach, and performance requirements. Chalco works with clients to determine optimal frame construction, glazing package, hardware system, sealing strategy, and surface finish based on specific project needs.
Selection by Building Application
Residential, apartment, hotel, school, and commercial buildings have distinct requirements for usage frequency, safety, and maintenance. Multi-story buildings benefit from tilt-in cleaning sashes, travel limiters, and balanced operation systems; high-traffic environments like schools and apartments may require reinforced locking hardware and controlled opening mechanisms.
Selection by Energy Efficiency and Climate Needs
In cold and hot climates, energy-efficient aluminum window configurations can combine thermal break profiles, Low-E insulated glazing, warm-edge spacers, inert gas fills and enhanced sealing systems. For street-facing elevations or high-noise zones, soundproof aluminum window configurations can add laminated or acoustic glazing and improved seals.
Selection for Aesthetic and Renovation Requirements
For renovation or unified facade projects, customize frame color, glazing bar patterns and the overall aluminum window design to match the existing architecture and support replacement installation.
Selection by Environmental Exposure
In coastal, high-UV, humid, or continuously exposed outdoor environments, opt for high-durability coatings, corrosion-resistant hardware, and robust sealing systems to support long-term operational stability.
Please share architectural drawings, rough opening dimensions, project location, and performance requirements-Chalco will assist in recommending the appropriate aluminum double-hung window configuration.
Chalco supplies customized aluminum double-hung windows based on drawings, opening sizes, applications, and project requirements, covering frame structure, glazing, hardware, screens, finishes, colors, and packaging.
Double-hung window performance also depends on profile design and extrusion accuracy. Frame, sash and mullion sections are selected for specific building aluminum profile applications, while purpose-designed aluminium extrusion dies help control section dimensions, wall thickness and assembly fit before cutting, machining and window assembly.
