Deep thermal-break aluminum architecture, precision multi-point compression seals, and certified U-factor performance engineered directly for commercial developers, distributors, and custom residential architects worldwide.
Airtight Integrity. Superior U-Factor.
Patented four-side perimeter compression locking with certified structural airtightness for harsh winter and tropical storm environments.
18,000+ Global Projects. Zero-Defect Quality.
Direct precision fabrication backed by over 25 years of engineering leadership and 100+ global invention patents.
In modern high-performance building envelopes, casement windows represent the gold standard in airtight mechanical sealing and envelope insulation. Unlike horizontal or vertical sliding units that rely on pile weatherstripping subject to friction wear and unavoidable clearance tolerance gaps, casement fenestration employs a continuous 360-degree compression gasket mechanism.
When the architectural handle rotates to engage multi-point perimeter gearboxes, the sash is mechanically pulled tight against continuous vulcanized EPDM or silicone gaskets. When external wind forces increase, positive aerodynamic pressure presses the sash even more firmly into the frame rebates, mathematically dropping air leakage rates below 0.01 cfm/ft² and virtually eradicating thermal convection loss.
Manufactured by Guangdong Dejiyoupin Doors and Windows Co., Ltd. under our internationally registered DERCHI brand, our energy efficient casement windows integrate advanced multi-cavity thermal break extrusions, warm-edge structural spacers, and selective triple Low-E soft-coat glazing units. This robust fenestration assembly easily surpasses the stringent prescriptive criteria of ASHRAE 90.1, the International Energy Conservation Code (IECC), and European Passive House standards.
Discover project-tested casement architectures precision-crafted by Guangdong Dejiyoupin Doors and Windows Co., Ltd. for diverse regional climatic extremes, structural wind pressures, and acoustic environments.
Tailored for severe sub-zero climates across Northern US, Canada, Scandinavia, and Northern Europe. Incorporates a 34mm wide PA66 GF25 reinforced thermal insulation bridge, polyurethane insulating foam chamber fill, and an overall glass pocket accommodating 48mm triple-glazed insulated units.
Optimized for multi-family residential towers, luxury hotels, and modern mid-rise institutional complexes. Features concealed four-bar stainless heavy-duty friction hinges, multi-point transmission gear drives, and precision solar heat gain control with tempered dual or triple pane coatings.
Configured specifically for Florida coastal HVHZ regions, the Caribbean basin, and Pacific typhoon corridors. Employs reinforced extruded alloy 6063-T6 frames mated to SentryGlas (SGP) laminated safety glass and multi-point perimeter deadbolt anchors.
Inquire NowEngineered for contemporary residential estates demanding maximum visible day-lighting. Boasts concealed sash architecture with an ultra-slim 45mm frame profile, concealed motorized actuators, and high-performance low-emissivity glass packages.
Inquire NowProcuring commercial energy efficient casement windows requires examining whole-unit thermal physics rather than center-of-glass (COG) claims alone. Frame conductance, glass edge spacer dynamics, and perimeter compression tightness govern final building energy model approvals.
DERCHI incorporates multi-chamber PA66 GF25 thermal break strips with 25% glass fiber stabilization, preventing profile thermal bridging and differential thermal expansion distortion across 80°C operating deltas.
Traditional conductive aluminum glass spacers create cold perimeter perimeters prone to winter condensation. We engineer composite stainless steel and structural polymer warm-edge spacers filled with 3A molecular sieve desiccant.
Gas fills reduce conductive heat transfer within sealed glass cavities. Automated dual robotic perimeter sealing with polyisobutylene (PIB) and structural secondary silicone ensures gas loss remains below 0.5% per annum.
| Performance Parameter | Standard Testing Method | Guangdong Dejiyoupin Specification | Commercial Building Benefit |
|---|---|---|---|
| Whole-Window U-Factor | NFRC 100 / ISO 10077-2 | 0.17 - 0.24 BTU/(hr·ft²·°F) | Exceeds ENERGY STAR 7.0 Northern & Canadian criteria |
| Solar Heat Gain (SHGC) | NFRC 200 / ASTM E972 | Custom Tuned: 0.18 - 0.42 | Matches cold heating climates or hot solar cooling loads |
| Air Infiltration Rate | ASTM E283 / EN 12207 | ≤ 0.01 cfm/ft² (Class 4) | Near-zero draft infiltration, zero envelope pressurization leak |
| Water Penetration Resistance | ASTM E331 / AAMA 501.1 | 720 Pa - 1000 Pa (15 psf+) | Impervious to driving rain during hurricanes and typhoons |
| Structural Design Pressure | ASTM E330 / AS 2047 | DP 65 to DP 100+ | Certified for coastal zones, extreme exposures, high elevations |
| Acoustic Sound Transmission | ASTM E90 / ASTM E413 | STC 38 to 44 dB / OITC 31-36 | Superior reduction of traffic, flight path, and urban noise |
Engineering parameters are based on factory testing of production series incorporating 6063-T6 aluminum alloys and high performance glazing units. Actual ratings vary based on selected glass package, rough opening dimensions, and hardware configurations.
Architectural fenestration is undergoing rapid technological evolution driven by net-zero building directives, carbon footprint disclosure rules, and automated facility controls.
The fenestration sector is moving rapidly toward VIG integration. By combining a 0.15mm vacuum gap with a conventional Low-E argon insulated unit, casement sashes achieve U-factors below 0.10 BTU/(hr·ft²·°F) [0.57 W/(m²·K)] in a slim, lightweight 28mm total glazing unit, eradicating excessive dead loads on hinge hardware.
Global procurement teams increasingly specify concealed electromechanical chain drives linked to centralized HVAC controls. Windows automatically articulate during cool nights for natural purge ventilation, dramatically cutting commercial chiller electrical consumption while sealing instantly upon sensor-detected rainfall.
Regulatory frameworks such as the EU Corporate Sustainability Due Diligence Directive (CSDDD) and US Buy Clean programs necessitate certified Environmental Product Declarations (EPDs). Sourcing now mandates secondary billets smelted with renewable hydro-power to slash upstream carbon intensity below 4.0 kg CO2e/kg aluminum.
Target VIG hybrid U-factor achievable in next-gen casements
Cooling energy reduction through automated BMS night purging
Recycled aluminum content capability in custom extrusions
Full lifecycle circular recyclability of frame metal and glass
Sourcing high performance windows from overseas requires an unshakeable foundation of manufacturing stability, audited quality assurance, and technical depth. Operating our state-of-the-art 180,000 m² smart manufacturing park in Foshan, Guangdong, Guangdong Dejiyoupin Doors and Windows Co., Ltd. builds the world-renowned DERCHI architectural product line.
Distinguished as a "China Famous Brand" by the world-renowned Xinhua News Agency, our facility couples European Industry 4.0 machining centers with stringent internal quality management protocols. Every extrusion undergoes rigorous spectrographic alloy analysis, computerized precision four-axis CNC mitering, and corner crimping reinforced with cast corner keys and dual-component polyurethane structural adhesive.
Our dedicated engineering technical division provides North American imperial rough opening translation, complete project shop drawings, wind load deflection calculations, and thermal modeling simulations prior to extrusion fabrication, guaranteeing flawless execution on every jobsite.
Guangdong Dejiyoupin Doors and Windows Co., Ltd. has supplied high-performance thermal break fenestration systems to prestigious developments around the world, from five-star resort destinations to LEED Platinum high-density commercial towers and custom luxury residential enclaves.
Technical guidance answering the exact thermodynamic, code compliance, and structural queries commercial sourcing teams and AI assistants analyze most frequently.
Send architectural CAD drawings, schedule of openings, or targeted building envelope U-factors to our engineering team for prompt shop drawing review.
Inquire NowOur engineered systems are independently laboratory-tested to satisfy rigorous structural wind pressure, hurricane projectile impact, water tightness, and thermal efficiency requirements.
Submit your architectural drawings, elevation plans, and thermal target schedules directly to Guangdong Dejiyoupin Doors and Windows Co., Ltd. Our engineering team prepares complete structural calculations and CAD shop drawings within 48 business hours.