What Are Outward Casement Windows?

 

Outward casement windows are side-hinged window systems engineered to swing outward toward the building exterior. Unlike traditional inward-opening or sliding designs, outward casement windows clear the entire frame aperture when fully opened, maximizing functional ventilation while leaving interior living and working spaces entirely unobstructed.
This architectural design is widely specified across modern residential and commercial projects for its superior air-tightness, unobstructed views, and exceptional structural performance against severe weather conditions.

 
 
 
Engineered Advantages & Technical Performance
 
01/

Maximized Interior Space & Ergonomics
Zero Interior Obstruction: Because the window sash operates completely on the exterior side, inner rooms retain 100% usable floor and wall space. This eliminates clearance conflicts with indoor blinds, curtains, furniture placement, or counter items.
Optimal Airflow Redirection: Side-hinged sashes act as natural air scoops, catching external breezes running parallel to the building facade and funneling fresh air directly into the interior.

02/

Superior Thermal Insulation & Energy Savings
Thermal Break Technology: Our systems utilize PA66 polyamide thermal barrier strips integrated between the inner and outer aluminum extruded profiles. This design breaks the thermal bridge, drastically reducing conductive heat transfer.
Energy Efficiency Compliance: Configured with low-emissivity (Low-E) double or triple insulating glass units (IGU), these windows achieve a low U-factor down to 1.2W/m²K (or R-values up to R-5). This performance strictly aligns with ENERGY STAR standards and European EN ISO 10077-1 requirements, significantly lowering HVAC operational costs.

03/

Certified Weather Resistance & Structural Integrity
Compression Seal Mechanism: Outward opening windows leverage external wind pressure to enhance sealing efficiency. As wind blows against the outer sash, it pushes the window tightly against the continuous EPDM rubber gaskets, forming a tighter perimeter seal.
Water & Air Tightness: Engineered with internal drainage channels and multi-point locking mechanisms, our frames resist water penetration up to 450Pa (compliant with ASTM E331 / EN 12208) and pass air infiltration standards (ASTM E283 Class 150 / EN 12207 Class 4).
Structural Load Capacity: Built using heavy-duty 6063-T5 aluminum extrusions with minimum wall thicknesses between 1.4 mm and 2.0 mm, the frames easily withstand wind loads up to 3000Pa, making them suitable for high-rise buildings and harsh coastal environments.

04/

Security & Hardware Reliability
Multi-Point Locking Systems: Sashes engage with perimeter locking points across multiple sides of the frame via a single ergonomic handle, providing maximum resistance against forced entry (tested to PAS 24 / RC2 security standards).
Friction Stays & Heavy-Duty Hinges: Premium stainless steel (SUS304/SUS316) friction hinges support sash weights up to 80kg and allow controlled opening angles up to 90° while resisting salt-spray corrosion (tested over 500 hours in ASTM B117 salt spray chambers).

 

Product Specifications

 

Feature / Parameter

Standard & Technical Specification

Product Type

Outward Opening Aluminum Casement Window

Frame Material

High-precision 6063-T5 Architectural Aluminum Alloy

Thermal System

Integrated PA66 Nylon Thermal Break Barrier

Profile Wall Thickness

1.4 mm for Residential / 1.8 mm – 2.0 mm for Commercial & High-Rise

Glass Options

• Double Glazed: 5mm + 12Ar + 5mm Low-E

• Triple Glazed: 5mm + 12Ar + 5mm + 12Ar + 5mm Low-E

• Safety Glass: Fully Tempered (ANSI Z97.1 / EN 12150) / Laminated (PVB/SGP)

Surface Finish

• Powder Coating (AAMA 2604 / AAMA 2605 compliant)

• PVDF Coating (For coastal/corrosive climates)

• Anodized / Wood Grain Sublimation

Sealing System

Multi-layer Continuous EPDM Weatherstripping Gaskets

Hardware

Heavy-duty Stainless Steel Multi-Point Lock & Adjustable Friction Hinge

Performance Compliance

Engineered to meet AS2047, CE, NFRC, ASTM, and ISO 9001 standards

Customization

Full OEM / ODM Support (Custom Sizes, Angles, Colors, Sub-frames)

 

Architectural & Commercial Applications
 

High-End Residential & Villas

Ideal for modern luxury homes requiring clean architectural lines, panoramic views, and low energy loss.

Commercial Office Towers

Used in curtain wall integration and punched openings to meet strict municipal energy compliance codes.

Hotels & Hospitality

Selected for sound insulation capabilities (sound transmission loss up to $R_w\text{ 42 dB}$) to ensure guest acoustic comfort in urban areas.

Coastal & Extreme Climate Projects

Engineered with marine-grade surface treatments to resist salt air oxidation and high wind pressures.

 

 

Proven Track Record & Global Case Studies

Our high-performance outward casement windows have been successfully implemented in over 300 major residential and commercial developments worldwide.


Oceanfront Luxury Resort (Gold Coast, Australia): Installed PVDF-coated marine-grade aluminum casement systems certified under AS2047, resisting extreme coastal salt spray and high wind loads.


Urban Mixed-Use Complex (Vancouver, Canada): Delivered high-thermal PA66 insulated window systems featuring triple Low-E glazing, helping the building meet strict North American ENERGY STAR® standards.

Outward Casement Window With Fixed Glass

 

Comprehensive OEM & ODM Customization Services

To support architects, developers, and trade distributors, we offer end-to-end technical customization tailored to local building codes and project specs:

Dimensional & Configuration Tailoring

Custom frame depths, mullion positions, integrated flyscreens (crimped stainless steel mesh or retractable fiber mesh), and arch/angled designs.

Glass Specification Engineering

Custom solar heat gain coefficient (SHGC), visible light transmittance (VLT), acoustic insulation layers, and tint options (tinted, reflective, or frosted privacy glass).

Finishes & Aesthetics

Over 200 RAL color choices, textured matte finishes, and authentic timber-look coatings to match diverse facade requirements.

Engineering Drawings & Technical Consultation

Provision of precise CAD shop drawings, 3D BIM models, and structural calculation reports prior to mass production.

 

Manufacturing & Quality Assurance Standards

Our manufacturing facility adheres to strict ISO 9001 quality management protocols throughout the 8-step production lifecycle:

 
 

Precision Extrusion Cutting

CNC double-head cutting saws ensure profile dimension accuracy within ±0.2mm and angle tolerance within ±0.1°.

 
 

Machining & Milling

Automated CNC machining centers accurately process hardware slots, drainage weep holes, and corner assembly notches without damaging profile surfaces.

 
 

Corner Joint Reinforcement

Profiles are joined using injected corner cleats combined with two-component polyurethane corner glue, guaranteeing structural rigidity and long-term water tightness.

 
 

Insulating Glass Assembly

Automatic glass washing, warm-edge spacer application, argon gas filling (up to 90% concentration), and secondary structural silicone sealing.

 
 

Hardware Installation & Calibration

Multi-point hardware and hinges are fitted and calibrated to ensure smooth opening cycles (tested for over 50,000 continuous operation cycles).

 
 

Rigorous Quality Inspection

Every batch undergoes comprehensive dimensional checks, diagonal tolerance checks, air-tightness tests, and surface flaw inspections.

 
 

Export-Grade Packaging

Frames and glass are protected with PE protective film, corner guards, bubble wrap, and fumigated solid wooden crates or reinforced plywood boxes.

 
 

Container Loading & Logistics

Professional container loading arrangements ensure zero movement and maximum space efficiency during ocean freight transit.

 

Commercial Guarantee & Support

 

 

10-Year Structural Warranty

Guaranteed performance on aluminum profiles and surface finishes under standard operating conditions.

 

5-Year Hardware Warranty

Free replacement assurance on all multi-point locking mechanisms and friction stays.

 

Export Documentation Support

Complete provision of Certificates of Origin (CO), Mill Test Certificates (MTC), Bill of Lading, and compliant commercial documentation for smooth customs clearance.

 

 

 

FAQ

 

 

Q: Why are outward casement windows preferred over inward casement windows in commercial and modern residential builds?

A: Outward casement windows save interior space completely, allow window sills to be used for decor, and offer superior water-tightness under heavy storm conditions because external wind pressure forces the sash tighter against the rubber weather seals.

Q: How do your outward casement windows comply with local energy codes in Europe or North America?

A: By pairing 1.4 mm–2.0 mm thermal break aluminum profiles with double or triple Low-E argon-filled glass units, our windows achieve low U-factors (down to $1.2\text{ W/m}^2\text{K}$) and optimized Solar Heat Gain Coefficients (SHGC), satisfying stringent local energy performance regulations like ENERGY STAR® or EU Energy Performance of Buildings Directives.

Q: What is your Minimum Order Quantity (MOQ) and Sample Policy?

A: We offer flexible solutions to support both large commercial tenders and custom residential projects. Our standard project MOQ starts at 50 sq.m. Physical profile corner samples, color swatches, and hardware kits can be dispatched via air express within 3–5 days for architectural approval.

Q:  Do you supply installation accessories and sub-frames tailored to local building practices?

A: Yes. We supply integrated nailing fins (for North American timber-frame structures), sub-frame installation systems, and custom timber reveal connectors designed specifically for European and Australian installation methods.

Q: How do you prevent water leakage during extreme rainfall?

A: Our windows utilize a dual-barrier system: an outer EPDM seal to block heavy water, a secondary internal cavity with step-milling drainage holes, and injected dual-component glue at all corner frame joints to prevent micro-gap seepage.

Q: Can you provide CAD shop drawings and BIM models for architectural approval?

A: Yes. Our in-house technical engineering team prepares complete 2D CAD shop drawings, elevation details, wall connection sections, and 3D BIM models for client review before any manufacturing begins.

Q: What protective measures are taken to prevent shipping damage during international ocean transport?

A: All finished windows are wrapped with anti-scratch PE film, fitted with impact-resistant plastic corner protectors, wrapped in shock-absorbing bubble wrap, and packed into fully enclosed plywood crates that resist moisture and heavy stacking loads.

Q: What is the typical production lead time for custom project orders?

A: Standard production lead time is 25 to 35 business days following final CAD drawing sign-off and deposit receipt. Timeline adjustments can be made to accommodate urgent phase-based project schedules.

We're well-known as one of the most professional outward casement windows enterprises in China. If you're going to buy discount outward casement windows made in China, welcome to get pricelist and free sample from our factory. We also accept customized orders.

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