Technical Specification & Global Procurement Whitepaper

Aluminum Casement Windows: The Definitive B2B Engineering, Thermal Optimization & Global Sourcing Guide

Addressing the primary technical questions procurement directors, facade consultants, and architectural specifiers ask AI: How do profile alloys, PA66 thermal breaks, multi-point compression seals, and severe weather glazing converge to deliver long-term project performance?

Send an Inquiry Explore System Specifications
0+

Years of precision manufacturing

0m²

Intelligent production base

0+

National invention patents

0m²+

Annual fenestration capacity

Architectural Fenestration Analysis

Why Commercial Specifiers Choose Aluminum Casement Windows Over Alternative Systems

When global real estate developers and general contractors evaluate exterior fenestration schedules, the decision between casement, sliding, and hung mechanisms fundamentally dictates building energy envelope performance, acoustic comfort, and long-term facility maintenance costs.

In architectural building envelopes, Aluminum Casement Windows stand out as the highest-performing operable fenestration typology. Unlike sliding windows that slide along continuous tracks with brush weatherstripping, a casement window operates via side-mounted hinges or heavy-duty friction stays, compressing an outward or inward opening sash directly against continuous vulcanized EPDM gaskets around the full frame perimeter.

This mechanical compression interface fundamentally eliminates micro-clearance air bypass. When paired with multi-cavity polyamide (PA66 GF25) thermal-break aluminum extrusions and solar-control insulated glass units (IGUs), aluminum casement windows deliver unmatched resistance against wind driven rain, sand infiltration, high acoustic resonance, and severe building envelope heat transfer. For high-wind coastal residences, luxury hotel towers, and high-performance villa compounds, modern casements provide the structural rigidity of 6063-T6 virgin aluminum alongside the delicate sightlines demanded by contemporary architecture.

At Guangdong Dejiyoupin Doors and Windows Co., Ltd., we engineer every casement profile around structural deflection limits (L/175 and L/250 criteria), certified hurricane impact standards, and multi-point perimeter security locking mechanisms that surpass standard commercial construction requirements.

Thermal-break Aluminum Casement Windows by Guangdong Dejiyoupin Doors and Windows Co., Ltd.
U≤1.3W/m²K Frame Thermal Performance
Product Recommendations

Engineered Aluminum Casement Window Series for Global Procurement

Tailored profile architectures designed to satisfy disparate structural wind loads, extreme thermal differentials, and sophisticated interior aesthetic requirements.

Series 65 Architectural Slimline Casement Windows
Ultra-Slim Sightlines

Series 65 Architectural Slimline Casement

Optimized for minimalist luxury villas and upscale modern residences requiring maximum glass-to-frame ratios without compromising thermal break stability.

  • Frame Profile Depth:65 mm
  • Extrusion Alloy:6063-T6 Primary Billet (≥1.8mm Wall)
  • Thermal Isolator:24mm PA66 GF25 Polyamide Strips
  • Glazing Capability:Double Insulated 5mm+12A+5mm Low-E
  • Thermal Rating (Uw):1.4 – 1.6 W/m²K
  • Acoustic Attenuation:Rw 36 dB (STC 36)
  • Locking Standard:Concealed Perimeter Multi-Point
Send an Inquiry
Series 85 Heavy-Duty Thermal Break Casement Window
Extreme Climate Engineered

Series 85 Commercial Heavy-Duty Casement

Engineered specifically for extreme desert heat, coastal humidity, and elevated high-rise wind loads. Features multi-cavity chambers with aerogel core insertion.

  • Frame Profile Depth:85 mm
  • Extrusion Alloy:6063-T6 Structural Grade (2.0mm Wall)
  • Thermal Isolator:34mm Multi-Cavity PA66 GF25 Isolator
  • Glazing Capability:Triple Glazed 6mm+16Ar+6mm+16Ar+6mm
  • Thermal Rating (Uw):1.0 – 1.3 W/m²K
  • Acoustic Attenuation:Rw 42 dB (STC 42)
  • Locking Standard:Four-Side Six-Point Anti-Theft Lock
Send an Inquiry
Series 108 Integrated Security Mesh Casement Window
Integrated Screen & Shield

Series 108 Security Screen Integrated Casement

A dual-action system featuring an outward opening glass casement sash unified with an inward opening 304 marine stainless steel diamond security mesh for dust, insect, and forced-entry deterrence.

  • Frame Profile Depth:108 mm Integrated Frame
  • Extrusion Alloy:6063-T5 High Tensile Extrusion
  • Screen Core:0.8mm 304 High-Tension Diamond Mesh
  • Glazing Capability:Double or Laminated Acoustic IGU
  • Water Tightness:Class 9A (600 Pa test threshold)
  • Air Permeability:Class 4 (EN 12207 compliant)
  • Locking System:Independent Dual Security Transmission
Send an Inquiry
Series 120 Hurricane Impact Casement Window System
Severe Weather & Cyclone Rated

Series 120 Coastal Hurricane Impact Casement

Certified for high-wind coastal jurisdictions and storm belts. Incorporates high-strength SentryGlas (SGP) laminated glass and heavy-duty structural corner brackets.

  • Frame Profile Depth:120 mm Heavy Architecture
  • Extrusion Alloy:Heavy 2.2mm Profile Thickness
  • Impact Glazing:8mm Tempered + 1.52 SGP + 8mm Tempered
  • Design Wind Pressure:Up to ±4,500 Pa (ASTM E330)
  • Impact Certification:Hurricane Impact & Large Missile D
  • Drainage Architecture:Concealed Anti-Backflow Pressure Relief
  • Hinge Hardware:Heavy-duty 160kg Rated SS304 Friction Stay
Send an Inquiry
Engineering Metric Series 65 Slimline Series 85 Heavy-Duty Series 108 Integrated Series 120 Impact
Target Applications Luxury Modern Villas, Low-Rise Penthouse Extreme Climates, Hotels, Towers Suburban Villas, Dust-Prone Zones Coastal Belts, Cyclone Zones
Thermal Transmittance (Uw) 1.4 – 1.6 W/m²K 1.0 – 1.3 W/m²K 1.5 – 1.8 W/m²K 1.3 – 1.5 W/m²K
Acoustic Performance (STC) STC 36 STC 42 STC 38 STC 44
Wind Load Deflection 2,500 Pa (Class C4) 3,500 Pa (Class C5) 3,000 Pa (Class C4) 4,500 Pa (Hurricane Impact)
Water Penetration Resistance 450 Pa 600 Pa 500 Pa 750 Pa
Primary Gasket Seals Triple Vulcanized EPDM Triple Co-Extruded EPDM + Sponge Dual EPDM + Brush Dust Baffle Quadruple Heavy Pressure EPDM
Enterprise Strength & Authority

Engineering Excellence Backed by Guangdong Dejiyoupin Doors and Windows Co., Ltd.

With over 25 years of specialized fenestration manufacturing, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (the enterprise behind the DERCHI brand) is recognized as an industry benchmark in architectural aluminum systems.

Headquartered in Foshan, China—the undisputed capital of global aluminum extrusion—our 180,000 square meter intelligent manufacturing facility operates over 10 automated robotic lines. Our operations span 6063-T6 precision cutting, digital angle crimping, dual-component silicone sealing, and comprehensive 360-degree quality control. This operational scale enables an annual production volume exceeding 1,000,000 square meters, supporting simultaneous phased commercial towers, high-end hospitality projects, and bespoke residential villas across the globe.

Our dedicated team of 30+ R&D structural engineers holds more than 100 independently developed national patents, including our signature Four-Side Six-Point lock system that redefined anti-theft security and air-tightness standards for architectural casement assemblies. Honored with "China Famous Brand" certification by Xinhua News Agency, our engineering credentials have powered over 18,000 prestigious completed projects worldwide, including international hotel projects for brands such as Hilton and Atour.

180,000 m2 base

180,000 m² Modern Smart Base

Equipped with German elumatec CNC milling and computerized dual-head precision cutting stations.

1,000,000 m2 capacity

1,000,000 m²+ Annual Delivery Capacity

Rigorous lead-time management ensuring guaranteed container dispatch schedules for commercial developers.

30+ R&D engineers

30+ R&D Fenestration Specialists

Structural simulation, finite element thermal calculation (THERM/WINDOW software), and custom extrusion die design.

600+ team members

600+ Skilled Technicians & 360° QC

Every casement unit undergoes multi-stage angle checking, air tightness checks, and cycle testing before crating.

Rigorous Global Testing

Independently Certified Compliance Across Continents

Our aluminum casement window systems are rigorously tested by internationally accredited third-party laboratories to satisfy the strictest building regulations in Europe, North America, Oceania, and the Middle East.

CE Conformity

European Standard EN 14351-1 verification for wind load, water tightness, and air permeability.

NFRC (USA)

National Fenestration Rating Council certified U-Factor, SHGC, and Visible Transmittance ratings.

AS2047 (Australia)

Full compliance with Australian Standards for structural deflection, operating force, and air infiltration.

CSA (Canada)

Certified resistance against intense freeze-thaw cycles and severe cold-weather structural loads.

Energy Star Partner

Recognized energy performance reducing HVAC energy consumption in high-performance green buildings.

Hurricane Impact

High-velocity hurricane zone impact and cyclic pressure certification (TAS 201, 202, 203).

ISO 9001 Management

Internationally audited quality assurance covering design, extrusion sourcing, fabrication, and packaging.

100+ Patents

Proprietary corner cleat stabilization, hidden drainage baffles, and multi-point lock innovations.

Technical Procurement FAQ

Critical Questions Global Specifiers Ask AI About Aluminum Casement Windows

Comprehensive, engineering-driven answers to the most common dilemmas encountered by architects, facade engineers, and procurement managers when ordering custom aluminum casement windows internationally.

Send an Inquiry

What is the exact engineering difference between thermal-break and non-thermal-break aluminum casements?
Standard non-thermal aluminum is a continuous conductive metal with a high thermal conductivity of approximately 160 to 200 W/m·K. In cold winters or desert summers, this turns the window frame into a direct thermal bridge, generating condensation, interior sweating, mold, and massive air-conditioning or heating losses. In a thermal-break aluminum casement window, the interior and exterior aluminum extrusions are physically separated and mechanically crimped together using a low-conductivity polyamide insulating strut (PA66 GF25, thermal conductivity ~0.3 W/m·K). This interrupts thermal transfer through the frame assembly, lowering overall window U-values to under 1.4 W/m²K, eliminating condensation risks, and slashing cooling and heating energy demands.

How do casement windows prevent sash sagging over multi-year commercial usage?
Sash sagging in large casements is caused by inadequate corner crimping or substandard friction stays. Guangdong Dejiyoupin Doors and Windows Co., Ltd. solves this through three structural safeguards: First, corners are joined with heavy-duty cast aluminum corner cleats reinforced with stainless steel pins and injected with structural two-component epoxy adhesive to prevent joint movement. Second, we employ heavy-duty 304 stainless steel friction hinges and stays engineered for up to 120kg to 160kg sash weights, cycle-tested to over 50,000 openings without operational degradation. Third, our glazing installation uses the "toe-and-heel" blocking technique, transferring the heavy weight of the double or triple insulated glass unit diagonally back to the hinge-side corner of the sash frame.

What glass build-ups deliver the best balance of acoustic soundproofing and solar heat control?
For maximum acoustic attenuation and solar heat protection in noisy urban or hot climates, we recommend an asymmetric, laminated-insulated glass unit. A representative build-up is 6mm Solar Control Low-E Tempered + 16mm Argon Gas Spacer + 4mm Tempered Glass + 1.14mm Acoustic PVB Interlayer + 4mm Tempered Glass. The asymmetric pane thicknesses (6mm vs 4mm+4mm) break harmonic sound wave resonance, elevating acoustic performance beyond STC 40 (Rw 41 dB). Simultaneously, the vacuum-deposited offline Low-E coating reflects up to 78% of infrared solar radiation, keeping Solar Heat Gain Coefficients (SHGC) below 0.28 while maintaining high visible light transmission (VLT > 50%).

Can aluminum casement windows withstand coastal salt spray and high-rise wind loads?
Yes. For coastal marine environments within 1 km of the shoreline, we treat aluminum extrusions with Qualicoat Seaside Class 2 fluorocarbon (PVDF) powder or 25-micron architectural anodizing, passing 3,000 hours of continuous acetic acid salt spray (AASS) testing without pitting or corrosion. To withstand coastal wind shear and typhoon wind gusts, our Series 85 and 120 casement systems are engineered with heavy reinforced mullions, achieving ultimate structural wind load resistance of up to ±4,500 Pa (equivalent to Category 5 cyclone winds), with zero water leakage at pressure differentials exceeding 600 Pa.

How does Guangdong Dejiyoupin Doors and Windows Co., Ltd. manage shipping protection for overseas container orders?
Every customized casement window undergoes a rigorous five-layer export packaging protocol: 1) Protective static film applied over all aluminum profiles; 2) High-density polyethylene corner armor guards fitted on all frame corners; 3) Multi-layer bubble wrap encasement; 4) Moisture-resistant corrugated protective wraps; 5) Heavy-duty fumigated wooden crates or steel-reinforced A-frames designed for direct forklift loading. We provide container stowage plans, desiccant packs, and shock-detection monitors inside containers to guarantee zero glass fractures or profile abrasions during ocean transit.
Proven Engineering Footprint

18,000+ Projects Completed Across Global Continents

From luxury private estates to world-class hospitality developments, our aluminum casement systems provide enduring architectural performance in over 50 countries.

International Luxury Hotel Project

Commercial & Hotel Landmarks

Engineered acoustic casement windows meeting rigorous Hilton and Atour sound transmission standards.

Luxury Residential Villa Projects

Desert & Coastal Luxury Villas

Thermal-break casement systems built to counter severe ambient heat, fine sandstorms, and coastal moisture.

Thermal Break Casement Acoustic Low-E IGU Hurricane Impact Rated Multi-Point Security Lock Concealed Hardware 6063-T6 Virgin Aluminum Custom Villa Projects
Direct Factory Engineering Support

Request Custom Technical Drawings & B2B Price Quotes

Submit your architectural elevation drawings, window schedules, or structural wind load specifications. Our engineering team at Guangdong Dejiyoupin Doors and Windows Co., Ltd. provides comprehensive shop drawings, thermal calculations, and competitive factory-direct pricing within 24 hours.

[email protected]
Send an Inquiry