Aluminum Bay Window – Expand Your Space, Elevate Your View
This type of window is one of the most architecturally impactful fenestration upgrades available to homeowners, builders, and designers. By projecting outward from the main building envelope at a defined angle, the bay window creates additional floor space inside the room, floods the interior with natural light from three directions simultaneously, and transforms an otherwise flat wall into a distinctive architectural feature that enhances both the building's exterior character and interior livability. SKATE's aluminum bay windows combine reinforced aluminium corner connectors, premium thermal break profiles, and precision-engineered corner angles to deliver a system that is as structurally robust as it is visually spectacular.
Configuration Options
This type of windows are available in the three most common architectural configurations:
Corner angles can also be specified at custom angles between 90° and 150° to match existing building geometry or unique design requirements.
Box Bay (90° corners)
Squared projection with a flat front panel and two 90° side panels returning to the main wall. Maximises interior space gain.
Angled Bay (135° corners)
The classic three-panel bay with angled side wings creating a gentler projection. Most widely used in traditional residential architecture.
Bow Window
Thin multi curved/polygonal panels forming a smooth rounded bulge (4–7 panels). Fits classic & formal architecture.
Technical Specifications
| Profile Material | 6063-T5 Aluminium Alloy |
| Profile Wall Thickness | 1.6 mm / 1.8 mm (Reinforced) |
| Corner Angle | 90° / 135° / Custom Angles |
| Thermal Break | PA66 GF25 Polyamide Strip |
| Glass Options | DGU / Low-E · Safety Glass |
| Glazing Thickness | 42 mm (5+14A+5) up to 36 mm TGU |
| Air Leakage |
≤ 0.1 cfm/ft² | Class 4 (EN 12207) |
| Water Tightness |
E1000 Pa (EN 12208) |
| Wind Load |
≥ 2500 Pa | Class C5 (EN 12210) |
| Sound Insulation (Rw) | Rw 38 – 44 dB |
| Available Materials | Aluminium / Vinyl / Alu-Clad Wood |
| Certifications | Certifications |
Structural Engineering
Corner connectors are the most structurally critical element of any aluminum bay window. SKATE uses heavy-duty die-cast aluminium or galvanised steel corner connector plates, precision-CNC-machined to the specified angle and bolted into both the head and sill frames. This creates a rigid, triangulated structure that resists wind loading, roof loading (where a flat bay roof is specified), and long-term thermal movement. Seamless welding of all four corners on each individual window panel ensures there are no water ingress points at any joint.
The sill beneath the window is typically a thermally-broken aluminium cill with integral drainage, preventing water accumulation and potential structural damage to the supporting structure below.
Glazing & Thermal Performance
Each panel within the unit can be specified as fixed, casement, tilt-and-turn, or sliding, depending on ventilation requirements and design preferences. All operable panels use the same hardware and glazing specifications as SKATE's individual window products. Thermal performance across the entire assembly is consistent, with the PA66 GF25 thermal break system and Low-E argon glazing maintaining U-values well within current energy code requirements.
For locations subject to severe weather, laminated safety glass is recommended for all panels - providing both enhanced wind resistance and protection against accidental breakage.
Aesthetics & Finishes
SKATE aluminum bay windows are available in the complete range of RAL powder coat colours, anodised finishes, PVDF coatings, and wood grain transfer printing. The angular corner sections are finished to match the main frame profiles exactly, ensuring a seamless appearance across the entire bay assembly. Decorative Georgian bars and astragal dividers can be incorporated into any panel for a traditional multi-pane aesthetic.
Ideal Applications
This type of windows are a valued addition to: living rooms and dining rooms in residential new builds and renovations; front-facing ground floor applications that benefit from the projection's curb appeal; bedroom alcoves and reading nooks; hospitality and commercial reception areas; and period renovation projects where the bay window is an existing architectural feature requiring like-for-like replacement in a modern material.
Frequently Asked Questions
Q: Does a bay window require a special roof or sill?
A: Yes. A flat or sloping bay roof (typically in lead, zinc, or EPDM) and a thermally-broken aluminium sill with drainage are recommended. SKATE can advise on compatible bay roof systems.
Q: How wide can an aluminum bay window be?
A: Total bay widths of 3,000 mm – 4,500 mm are common. Larger assemblies are feasible with additional structural support confirmed by a structural engineer.
Q: Can I specify different opening types for each panel?
A: Absolutely. A common configuration has the central panel fixed and the two flanking panels as casement or tilt-and-turn for ventilation.
Why Choose SKATE
With 29 years of aluminium manufacturing experience and a 160,000 m² dual-base factory, SKATE delivers aluminum bay windows with factory-direct quality assurance, full technical documentation, and after-sales support. Our products serve over 30 countries, backed by CE, NFRC, and AS 2047 certification.
Hot Tags: Aluminum Bay Window, China Aluminum Bay Window manufacturers, suppliers, factory
