Top Trusted Aluminum Double Hung Windows Factory & Exporters

Aluminium extrusions (6063-T5/T6 alloy) provide exceptionally high structural modulus and tensile strength compared to vinyl or wood. Vinyl profiles exhibit thermal expansion coefficients roughly 2.5 times higher than aluminium, frequently resulting in sash sagging, rail deformation, and balance binding in large openings or extreme climates. Timber systems, while aesthetically pleasing, absorb moisture, requiring intensive maintenance cycles to prevent rot and sticking in tropical or humid zones. Our thermally broken aluminum frames deliver architectural sightlines with minimal deflection under severe wind loads (up to AS 2047 N6 specifications) while guaranteeing decades of dimensional stability without warping, swelling, or thermal cracking.

The meeting rail intersection on a double hung unit is historically vulnerable to negative pressure infiltration. We resolve this through custom-designed stepped extrusion geometry coupled with santoprene/EPDM double bulb compression seals and internal zinc-alloy sweep locks that draw upper and lower sashes into active mechanical compression upon engagement. In addition, our sashes feature concealed internal drain channels and directional weep hole flaps with anti-blowback baffles, preventing water ingress under driving rains up to 580 Pa (12.0 psf) dynamic wind pressures.

Every order is tailored to your structural engineering drawings. Options include: custom thermal break depths (up to 34mm), anodized finishes (Class I 18μm), fluorocarbon PVDF coatings (AAMA 2605 compliant, offering 20+ years UV gloss retention), dual-color combinations (interior frame distinct from exterior facade color), warm-edge spacer technology, triple-glazed acoustic laminates, motorized app-driven balance lifters, and integrated insect screening (stainless steel mesh or retractable concealed pleated systems).

Yes. Our impact-rated systems are engineered using reinforced vertical stiles with internal steel or heavy-gauge aluminium stiffener bars. Glazing configurations deploy architectural laminated safety glass featuring DuPont SentryGlas (SGP) or high-tensile 0.090” PVB interlayers structurally glazed to the sash rebate via structural silicone adhesives (Dow Corning 983). These systems satisfy cyclical pressure protocols and large missile impact testing (ASTM E1886/E1996 and AS 2047 N6 criteria), suitable for severe storm zones throughout Florida, the Caribbean, the Philippines, and Coastal Australia.

Standard production cycles range between 25 to 35 working days upon sign-off of CAD shop drawings and hardware finishes. Export packaging follows heavy-duty industrial shipping protocols: windows are wrapped in 0.2mm protective static cling film, padded with high-density EPE foam corner protectors, and securely packed inside non-fumigation plywood crates with internal desiccants and dynamic timber bracing to prevent shifting or glass resonance during ocean freight transit.

Simply send your window schedule, elevation drawings (DWG/PDF), desired thermal parameters (U-value/SHGC), target port of entry, and delivery timeframe. Our dedicated bilingual fenestration engineering team provides a fully comprehensive technical proposal—inclusive of wind load estimations, profile cross-sections, glass build-ups, and FOB/CIF price schedules—within 24 hours.