Impact Rated
Hurricane Impact Aluminum Glass Customized Sliding Window Home Aluminum Windows Impact Soundproofing Double Glazed Windows
Double Glazed
Soundproof Rw 38dB
AS 2047
Certified Engineering
Engineered Aluminium Single & Sash Window Systems
Explore our flagship fenestration systems developed in our Foshan precision manufacturing plant. Every assembly is designed with extruded 6063-T5/T6 structural alloys, multi-chambered thermal barriers, and heavy-duty spiral balance mechanisms.
Impact Rated
Thermal Break
Top-quality Aluminum Double-hung windows With Thermal Insulation And A Sleek Thin Profile For New Construction
Slim Sightline
PA66 Barrier
U-Value 1.4
Custom Architectural
Foshan America Aluminum Tempered Glass Glass Waterproof French Black Windows and Doors Custom Design Doule Single Hung Windows
Tempered SGCC
Matte Black Anodized
Waterproof Class 9A
High Efficiency
Custom Aluminum Windows and Doors Energy-Efficient Casement Window Wholesale
Triple Sealed
Multi-Point Locks
Argon Gas Filled
North America Standard
Derchi American Style Aluminum Alloy Single Hanging Vertical Sliding Window Pit Hurricane Sash Window
AAMA Certified
Constant Force Balance
Miami-Dade Passed
Commercial Base
Normal Aluminium Profile Single Hung Window
6063-T5 Alloy
Powder Coated Qualicoat
Cost-Optimized
Multi-Family Spec
Aluminium Frame Glass Single-Hung Windows for Apartments Office Buildings Sash Windows
Commercial Grade
Integrated Sub-Head/Sill
Acoustic Rated
High-Rise Structural
Impact Resistant Energy Saving Thin Frame Aluminum Windows Stainless Steel for Apartment Multi Family Complex Construction
Structural Stainless Clips
Cyclonic Rating
Solar Low-E
Engineering Specifications
Structural Rigidity & Thermal Fenestration Architecture
Aluminium single-hung and single-sash window units represent the baseline of structural integrity in modern multi-family and commercial architectural envelopes. Below is the multi-layered mechanical specification matrix engineered by DERCHI.
6063-T5/T6 Structural Extrusion
Our single window frames use primary, non-recycled aluminium billet alloy with wall thickness ranging from 1.4mm to 2.2mm, exceeding AAMA commercial rating criteria. Tensile yield strength is strictly maintained above 160 MPa to prevent sash sag, torsion, and cyclic wind flutter on high-rise facades.
Polyamide PA66 GF25 Thermal Breaks
To eliminate conductive thermal bridges across the aluminium profile, our assemblies incorporate Technoform-grade 25% glass-fibre reinforced polyamide (PA66 GF25) thermal insulation struts. This drops the total window U-factor to as low as 1.35 W/m²·K (0.24 BTU/hr·ft²·°F), satisfying global green building codes.
Calibrated Constant-Force Balances
The operable bottom sash in our single-hung units leverages heavy-duty spiral or inverted constant-force block & tackle balances tested up to 25,000 cycles without fatigue. This ensures featherlight operation for sashes weighing up to 80 kg while keeping the upper sash immovably fixed to maximize air and water tightness.
| Performance Dimension | Standard Tested | DERCHI Engineering Value | Procurement Advantage |
|---|---|---|---|
| Structural Wind Load (DP) | ASTM E330 / AS 4055 / AS 2047 | Serviceability: 3500 Pa; Ultimate: 5000+ Pa (N6 Level) | High-Rise Approved Applicable for coastal, cyclonic, and exposed high-rise curtain envelopes. |
| Air Infiltration Rate | ASTM E283 / EN 12207 | < 0.05 L/s·m² at 75 Pa (Class 4 / Superior) | Drastically curbs HVAC air leakage, lowering building Life-Cycle Energy consumption. |
| Water Penetration Resistance | ASTM E331 / EN 12208 | 700 Pa to 1050 Pa Static Pressure (Class E1050) | Zero water penetration during severe monsoon wind-driven rain events; integrated drain flap. |
| Acoustic Attenuation (STC/OITC) | ASTM E90 / ISO 717-1 | Rw 35 dB – Rw 42 dB (using laminated acoustic PVB/SentryGlas) | Critical for urban apartments, highway corridors, and airport hospitality zoning. |
| Surface Protection Life | AAMA 2604 / AAMA 2605 / Qualicoat 2 | PVDF fluoropolymer 3-coat (25+ yrs) or Anodized 25μm Class I | UV breakdown prevention, salt-spray resistance > 3,000 hours in marine settings. |
Strategic Sourcing
Future Procurement Trends in Aluminium Single Window Systems
Global supply chains are shifting rapidly due to carbon accounting, regional energy legislation, and modular assembly methodologies. Developers and sourcing directors must adapt to four core macro procurement trends.
Trend 01 / Decarbonization
Low-Carbon Recycled Aluminium Billets
Procurement authorities in North America and the EU (under CBAM regulations) now mandate verified Environmental Product Declarations (EPDs). Sourcing is shifting to hydro-powered aluminium smelting yielding less than 4.0 kg CO2 per kg of aluminium, combined with closed-loop factory extrusion scrap reprocessing.
Trend 02 / Prefabrication
Unitized Modular Integration
On-site labour costs are driving developers toward pre-glazed, sub-framed single window units engineered directly for factory-built pods and light gauge steel (LGS) modular systems. Windows are delivered with factory-attached anchoring fins, perimeter vapor barriers, and flashing subs for drop-in installation.
Trend 03 / Thermal Codes
Warm-Edge Spacers & Vacuum Glazing
With energy codes targeting Net Zero Operational Carbon, single-hung assemblies are moving toward structural warm-edge composite spacers (silicone foam / stainless matrix) and hybrid vacuum-insulating glass (VIG). This allows single-frame units to achieve U-values competitive with quad-pane glass at half the sash weight.
Trend 04 / Digitization
BIM 4D & Traceable Quality Tokens
Global tier-1 procurement contracts now necessitate complete Autodesk Revit BIM model submittals with validated parametric data sets (thermal, structural, acoustic). Laser-etched QR codes on internal window frames provide instant access to mill test certificates and third-party QA batch reports on job sites.
Design Evolution
Technological Innovations Reshaping Single-Hung Profiles
Single window engineering has transformed from basic utilitarian openings into sophisticated architectural envelope components. Here is how modern fenestration technology has solved historical performance trade-offs.
Concealed Hardware & Ultra-Slim Sightlines
Traditional North American single hungs suffered from bulky 80mm+ visible sash faces. Modern European-influenced profiles feature flush concealed balance tracks, structural silicone glazed (SSG) sash rails, and interlock profiles under 28mm wide, maximizing visible light transmittance (VLT) and daylight penetration without sacrificing lateral stiffness.
Co-Extruded EPDM & Santoprene Gasketing
Brush pile seals, prone to degrading under intense ultraviolet rays and airborne sand abrasion, have been superseded in DERCHI single windows by vulcanized EPDM dense/sponge multi-lip perimeter seals and Santoprene bulb gaskets. These maintain elastic memory and airtight seals even after 20 years of continuous seasonal cycling.
Integrated Trickle & Motorized Micro-Ventilation
Modern single windows can now be equipped with acoustic trickle ventilators integrated into the upper fixed head frame. This provides continuous fresh air exchange (5,000 mm² equivalent aerodynamic area) in accordance with ASHRAE 62.2 standards, preventing indoor condensation while keeping external street noise out.
Procurement Guidance
Frequently Asked Questions for Commercial Buyers
Essential technical and logistical insights for general contractors, architectural specifiers, real estate developers, and fenestration import distributors.
What are the key structural differences between Single-Hung and Double-Hung aluminium windows? +
In a single-hung aluminium window, only the lower sash is operable (gliding vertically along dedicated tracks), while the upper sash remains permanently fixed, glazed directly into the main master outer frame. In contrast, double-hung windows feature two vertically moving sashes. From an engineering and cost perspective, single windows provide significantly superior water tightness (over 700 Pa tested) and airtightness because the upper perimeter eliminates dynamic joints and potential leak paths. Additionally, single-hung units reduce hardware cost by 15–22% and offer simpler structural anchor points for high-wind facades.
How does DERCHI ensure structural compliance with ASTM, AS 2047, and European CE standards? +
Every DERCHI aluminium window system undergoes destructive structural pressure testing in our internal test chamber (air infiltration under ASTM E283, water penetration under ASTM E331, and structural deflection under ASTM E330) before being submitted to accredited international testing facilities (such as Intertek, TUV, and Azuma). Our production files include traceable melt certificates for 6063-T5/T6 billets, spectral alloy analysis, powder coat cross-hatch adhesion data, and verified glass test certificates (ANSI Z97.1 / SGCC / EN 12150). Full technical documentation packs are available for project submittals to local building control authorities.
What surface finish options are specified for extreme coastal or high-UV environments? +
For coastal deployments (within 1 km of saltwater) or desert environments subject to heavy UV irradiance (such as Florida, the Caribbean, Dubai, and Australia), we recommend either:
- PVDF (Fluoropolymer) 3-Coat System: Meets AAMA 2605 requirements with 70% Kynar 500 resin, guaranteeing color retention (Delta E < 5) and film integrity for 25+ years.
- Anodic Oxidation Class I (25 Microns): Mechanically polished, acid-etched finish resistant to surface abrasions and airborne sand scour.
- Super-Durable Powder Coating: Qualicoat Class 2 certified powders from AkzoNobel or PPG, tested to 3,000 hours of continuous acetic salt-spray exposure.
What is the standard production lead time and export crating protocol for ocean transit? +
Our standard production timeline is 25 to 35 working days following shop drawing CAD sign-off and color sample approval. For export logistics, every window assembly is protected with peelable protective film, wrapped in heavy-duty pearl cotton cushioning, protected with reinforced corner guards, and palletized inside fully enclosed, fumigated solid wood (plywood) export crates. Units are vertically nested with non-abrasive spacers to prevent transit vibration scuffs, enabling safe crane and forklift offloading on containerized shipping lanes.
Can DERCHI supply custom architectural glazing makeups for acoustic or hurricane impact needs? +
Yes. Through our integrated glass processing capabilities in Foshan, we customize insulating glass units (IGU) ranging from 24mm to 42mm overall thickness. Glazing options include:
- Hurricane & Impact Rated: Laminated safety glass with 1.52mm or 2.28mm Kuraray SentryGlas (SG) interlayers capable of passing large missile impact Level D tests.
- Acoustic Damping: Dissymmetric glass thicknesses (e.g., 6mm Float + 16Ar + 4mm Float) or specialized Vanceva acoustic PVB layers achieving up to Rw 42dB reduction.
- Solar Performance: Triple silver Low-E coatings (Solarban 70 or equivalent) providing a Solar Heat Gain Coefficient (SHGC) as low as 0.22 while maintaining visible light transmittance > 65%.
What documentation and shop drawing assistance is provided prior to production? +
Upon receipt of your architectural door and window schedules, our dedicated engineering team prepares comprehensive AutoCAD 2D and Revit BIM 3D shop drawings within 48 to 72 hours. These drawings explicitly document outer frame dimensions, rough opening (RO) clearances, extrusion cross-sections, structural anchor locations, water-shed weep hole drainage paths, glazing pocket depths, wind load deflection calculations, and connection details to adjacent wall substrates (concrete, steel stud, CMU block, or wood framing). Manufacturing commences strictly upon consultant and structural engineer of record (SEOR) sign-off.
Accelerate Your Architectural Fenestration Sourcing
Direct factory pricing, verified international testing certifications, and custom extrusion engineering. Collaborate directly with DERCHI's fenestration technical sales engineers to review your window schedule, request physical finish samples, or generate compliant shop drawing submittals.