Direct factory-engineered thermal break casement systems with patented multi-point locking, acoustic dampening, and hurricane resistance for global residential developments.
Engineered for Extreme Thermal Climates
Triple-sealed polyamide multi-cavity barrier profiles preventing conditioned air leakage across all seasons.
Zero-Tolerance Smart Production
180,000 m² automated facility delivering 1,000,000+ m² annual fenestration capacity globally.
Years manufacturing residential casement windows
High-end projects supplied worldwide
Patents including Four-Side Six-Point lock
Annual certified fabrication capacity
In contemporary architectural design, the window is no longer a simple opening—it is a critical building-envelope barrier regulating thermodynamic energy exchange, sound ingress, structural wind loads, and forced-entry deterrence. Residential casement windows have emerged as the premier system for luxury single-family homes, coastal multi-unit condominiums, and passive villas.
Unlike horizontal sliding windows that rely on frictional mohair weatherstripping subject to track clogging and progressive air leakage, casement windows operate on a 90-degree outward or inward swing mechanism. When the sash closes, the perimeter locking transmission compresses continuous cellular EPDM gaskets against the master frame, creating a hermetic seal that completely eliminates wind whistling and micro-dust penetration.
Proprietary multi-point cam and keeper geometry preventing forced tool pry.
Reinforced corner corner-cleats with injected dual-component polyurethane sealant.
State-level media credential recognizing engineering pedigree and factory reliability.
CE EN 14351-1, NFRC 100/200, AS2047, CSA A440, and Hurricane ASTM E1886/E1996.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. manufactures four high-performance casement window configurations specifically tailored to distinct architectural geometries, climate loads, and acoustic isolation criteria.
The standard choice for contemporary suburban and coastal villas. Outward opening leaves interior living spaces clear while utilizing exterior wind force to compress the multi-lip EPDM gaskets tighter against the frame during cyclonic storm events.
Engineered for mid-rise and high-rise luxury residential projects. Features dual-action functionality: turn the handle 90 degrees for micro-ventilation tilting at the top sash, or 180 degrees for full inward 90-degree swing for safe interior glass cleaning.
Architecturally developed for coastal regions, offshore villas, and cyclone zones. Features heavy-gauge 2.0mm aluminum extrusions, 304 stainless steel egress friction stays, and SentryGlas (SGP) laminated safety glass resisting large missile projectile impacts.
A multi-functional system uniting an outward casement sash with an inward high-tensile 304 stainless steel king-kong wire mesh. Delivers 100% insect deterrence, child fall protection, and knife-resistant intruder security without impeding natural ventilation.
Inquire Custom Mesh SpecsDesigned for ultra-modern minimalist architecture where outer frame profiles seamlessly hide behind structural brick or plaster returns. Features an external view sightline of only 38mm, optimizing natural daylight transmission by up to 22% compared to conventional frames.
Request CAD & BIM ModelsComparing engineering thresholds enables project estimators, structural facade engineers, and procurement directors to verify conformity with international residential building codes.
| Evaluation Metric | Dejiyoupin High-Spec System | Standard Commercial Benchmark | International Testing Standard |
|---|---|---|---|
| Primary Profile Alloy & Temper | Virgin Primary 6063-T5 / 6063-T6 Aluminum | Recycled Scraps / Mixed 6060 Alloy | GB 5237 / ASTM B221 |
| Thermal Insulation Barrier | PA66 GF25 Polyamide 24mm - 34mm Multicavity Strip | PVC Strip or Non-Break Solid Extrusion | EN 14024 / DIN 53455 |
| Overall Window Thermal Transmittance (Uw) | 1.1 – 1.4 W/m²·K (0.19 – 0.25 Btu/h·ft²·°F) | 2.6 – 3.8 W/m²·K (0.46 – 0.67 Btu/h·ft²·°F) | NFRC 100 / EN ISO 10077-1 |
| Perimeter Weatherproofing Gaskets | Automotive Grade Co-Extruded Cellular EPDM (Triple Layer) | Standard Vinyl / Rigid Rubber Gaskets | ASTM C864 / DIN 7863 |
| Air Tightness Rating | Class 4 (q100 ≤ 0.05 m³/(h·m)) | Class 2 or Class 3 | EN 12207 / ASTM E283 |
| Water Tightness Under Pressure | Class E1050 (1050 Pa No Leakage) | 300 Pa – 450 Pa | EN 12208 / ASTM E331 |
| Wind Pressure Structural Resistance | Class C5 (Design Pressure: 4500 Pa / ±85 PSF) | Class C2 – C3 (1500 Pa – 2000 Pa) | EN 12210 / ASTM E330 |
| Acoustic Decibel Attenuation | Rw 42 dB – 46 dB (STC 44 with Acoustic Laminate) | Rw 28 dB – 32 dB | ISO 717-1 / ASTM E90 |
| Locking Mechanism & Security Level | Patented Four-Side Six-Point Stainless Transmission | Single-point handle latch | EN 1627 (RC2 / RC3) |
As building codes enforce decarbonization, urban density increases noise stress, and architectural software demands prefabricated precision, procurement patterns for residential casement windows are rapidly transforming.
Modern architectural aesthetics prioritize maximized glazed transparency. The trend is transitioning toward concealed sash profiles where structurally bonded silicone adheres the insulated glass unit directly to the aluminum frame. This enables ultra-slim 45mm visible profiles while allowing larger sash sizes up to 1.2m wide by 2.4m high without structural sagging.
Residential procurement increasingly integrates smart home automation protocols. Future casement systems feature fully concealed chain-drive micro-actuators integrated into the head profile. Coupled with Electrochromic Dynamic Glazing or integrated motorized Venetian blinds, casements react autonomously to indoor CO2 levels, rainfall sensors, and solar radiation thresholds.
Global developers are enforcing Environmental Product Declarations (EPD). Procurement departments actively favor aluminum suppliers who utilize low-carbon smelting processes powered by renewable hydropower, alongside recycled post-consumer aluminum scrap billets, cutting embodied carbon emissions below 4.0 kg CO2 per kg of finished extrusion.
Procuring residential casement windows internationally requires rigorous verification to prevent costly site installation failures, profile cracking, or air-conditioning energy leaks.
Ensure factory specsheets confirm glass-fiber reinforced PA66 GF25 rather than inferior recycled PVC, which degrades under intense UV and causes structural delamination.
For high-spec aluminum, insist on heavy cast-aluminum corner cleats with high-viscosity dual-component epoxy glue injection rather than brittle hollow screws.
Verify friction hinges and operators carry SGS or EN 13126 cycle test credentials. For coastal projects, specify SUS304 or SUS316 austenitic stainless steel hardware.
Windows require protective PE blue film, custom foam corner guards, heavy corrugated cardboard wrapping, and fully enclosed fumigated plywood crates with desiccant packs.
As the premier manufacturing entity behind the DERCHI brand, Guangdong Dejiyoupin Doors and Windows Co., Ltd. is based in Foshan, Guangdong—the epicenter of the world's aluminum innovation cluster. Over a quarter century of specialized manufacturing experience has cemented our reputation as a trusted primary supplier to global construction groups, residential property developers, and architectural contractors.
Our intelligent smart facility spans over 180,000 square meters, integrating automated profile storage, precision CNC machining centers, robotic gasket insertion lines, and automated glass bonding cells. Producing over 1,000,000 square meters of high-end fenestration annually, we operate an in-house R&D center staffed by 30+ senior facade engineers and fenestration designers.
Honored as a "China Famous Brand" by Xinhua News Agency, our factory maintains complete transparency across material tracking, mill certificates, and third-party laboratory verification. When you partner with us, you eliminate export trading intermediaries, obtaining direct factory pricing, proprietary tooling modifications, customized shop drawings, and guaranteed production scheduling.
Smart Industrial Base
Annual Delivery Capacity
Dedicated R&D Engineers
Trained Technicians
Factory Tour · Inside Foshan Intelligent Manufacturing Hub Every batch of residential casement windows undergoes stringent optical, mechanical, and climatic verification in our certified testing laboratory prior to ocean shipping.
Full-scale testing apparatus validating air, water, and structural performance under ASTM E330 and EN 12211.
Ensuring fluorocarbon PVDF and powder-coat finishes maintain colorfastness and adhesion against ocean sea mist.
Invention patent integrating mushroom cams with steel keeper boxes on all four edges for superior anti-prying.
Supplying Hilton, Atour, and luxury estate developments with comprehensive architectural BIM models.
Our residential casement window systems are specified in luxury villas, diplomatic residences, and modern condominiums worldwide, delivering enduring aesthetic balance and structural resilience.
From initial architectural blueprint analysis to on-site installation guidance, our structured engineering workflow guarantees total dimensional fidelity and zero site rework.
Facade engineers audit elevation drawings, wind pressure requirements, and window opening schedules.
Calculating optimal thermal break depths, glass composition, and hinge load capacities.
Generating mill-cut profiles, anchoring brackets, perimeter sill flashings, and sealant nodes.
Submitting corner cut samples, powder coating color swatches, and hardware sets for architectural sign-off.
Raw aluminum billets and European hardware orders are batched into our automated ERP system.
Digital laser verification of structural masonry openings ensures exact sub-millimeter manufacturing tolerances.
Multi-axis automated corner crimping, continuous gasket vulcanization, and 100% dry fit testing.
Heavy fumigated wooden crate packing with detailed 3D installation manuals and remote engineering support.
Launch 3D VR Showroom Inspect profile cross-sections, thermal barrier chambers, and multi-point lock mechanisms from anywhere in the world before placing orders.
Custom extrusions supporting arched, trapezoidal, and oversized casement frames.
Casement windows color-matched to sliding patio doors, sunrooms, and pivot entry systems.
Anodized, metallic fluorocarbon, AkzoNobel powder coats, and realistic Italian heat-transfer wood grains.
Our export engineering division coordinates directly with international container ports, offering full DDP/CIF logistics, customs compliance paperwork, and structural calculation reports.
Global Franchise Partners
Verified Installations
2024 Project Delivery
North America Europe Middle East Foshan HQ Base Australia 
Guangdong Dejiyoupin Doors and Windows Co., Ltd. holds over 100 patents and has passed strict testing regimes across North America, Europe, Australia, and Asia.
Conforms to EN 14351-1 fenestration directives
Certified thermal U-factor and SHGC performance
Complies with structural deflection and water ingress
A440 Canadian building code fenestration rating
Recognized energy-efficient residential envelope performance
ASTM E1886 / E1996 Large Missile projectile tested
Audited quality management and tracking systems
Invention patents including 4-Side 6-Point Lock
Authoritative answers to the most common engineering and procurement questions regarding residential casement windows.
Submit your architectural elevations, window schedules, or project tender specifications to receive an engineered technical quotation, glass U-value calculation, and DDP project shipping proposal directly from our engineering team.
International Flagship Presence
Experience our residential casement windows first-hand in partner showrooms across major construction hubs.
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