Chalco offers custom slimline aluminium windows ideal for projects requiring narrower sightlines, larger glass areas, and a modern architectural appearance.
Our slim profile aluminium window systems are suitable for modern homes, villas, apartments, renovation projects, and commercial openings, helping clients balance daylighting, views, thermal insulation, weather resistance, and project cost.
In addition to slimline aluminium windows, Chalco also supplies a wider range of finished aluminum window solutions for residential, commercial and project-based applications.
Slimline aluminium windows are aluminium window systems with narrower visible frames, larger glass areas, and cleaner sightlines.
They are used in modern homes, villas, apartments, commercial buildings, and renovation projects where daylight, view, thermal performance, and appearance all matter.
An operable slimline window with good sealing performance for bedrooms, kitchens and villa exterior openings.
A large-glass fixed window solution ideal for scenic views, daylighting, and modern facade design.
A versatile window type suited for European-style homes, apartments, and high-performance projects.
A space-saving window type ideal for balconies, apartments, kitchens, and commercial partitions.
Top-hung operable windows ideal for bathrooms, kitchens, stairwells, and ventilation zones.
A vertically operated solution ideal for traditional window styles, British homes, and heritage renovation projects.
Ideal for lofts, extensions, conservatories, and roof daylighting applications.
Ideal for black narrow frames, glazing bars, industrial aesthetics, and historic building renovations.
Not sure which slimline aluminium window suits your project? Please provide opening dimensions, location, and desired operation type, and we can recommend the right window configuration before quoting.
Different slimline aluminium window systems vary in frame thickness, visible face width, glazing options, and performance ratings.
Please share drawings, window dimensions, and performance requirements so we can determine whether the 80 Slimline System, EL86 System, or a custom configuration best fits your project.
A slim profile aluminium window system for projects that need narrow sightlines, larger glass areas, and reliable structural performance.
Technical Specifications:
| Item | Specification |
| Profile wall thickness | 2.0 mm |
| Visible face width | Frame 11 mm / sash 57 mm |
| Outer frame width | 80 mm |
| Glass options | 5 mm + 19A + 5 mm / 5 mm + 12A + 5 mm + 12A + 5 mm |
| Aluminium profile | 6060-T66 high-precision profile |
| Hardware groove | European C-groove concealed hardware |
Performance Ratings:
The EL86 slimline window system is designed for projects that need a smaller visible face and clearer view, good sealing, and optional screen integration.
Technical Specifications:
| Item | Specification |
| Frame depth | 86 mm |
| Frame thermal break | 24 mm |
| Sash depth | 77 mm |
| Sash thermal break | 24 mm |
| Screen option | Available with matching insect screen |
Performance Ratings:
Structural Details Supporting Slimline Window Performance:
For accurate selection, please provide opening dimensions, glazing requirements, wind load conditions, frame colour, and installation environment. Final configuration can be confirmed based on project drawings and quotation details.
Slimline aluminium windows are ideal for projects requiring larger glass areas, cleaner sightlines, and a modern architectural appearance. They can be used in residential, renovation, commercial, and institutional applications. Final configuration must account for opening size, glass weight, wind load, and local environmental conditions.
Ideal for contemporary residential projects requiring abundant daylight, expansive views, and minimalist facades. Suitable for living rooms, bedrooms, and courtyard connections, often combined with fixed, casement, or large-glazing assemblies to achieve a light, modern building aesthetic.
Ideal for apartment balconies, bedrooms, kitchens, and common areas, the slim-frame design reduces visual bulk while enhancing daylighting, ventilation, and building aesthetics.
Suitable for office buildings, showrooms, retail storefronts, and commercial facades, the large glass design improves natural lighting and display performance, while consistent profiles and colours simplify overall project management.
Ideal for residential, hotel, apartment, and commercial buildings in coastal, humid, rainy, or high-UV regions; surface finish, sealing, drainage, and hardware configuration require careful verification.
Suitable for villas, commercial buildings, and large glazed openings; system configuration must be confirmed based on glass weight, profile strength, mullion structure, and local wind load requirements.
Available aluminum surface treatment options include:
Matte black, dark grey, and white: Matte black and black anodized aluminum finishes suit modern slimline windows, steel-look windows and heritage renovation projects; white is better suited for bright residences, apartments and minimalist interiors.
Dual-colour options: Exterior colours can match the building facade, while interior colours complement interior décor, making it ideal for residential and commercial projects requiring a coordinated exterior and interior appearance.
Custom RAL colours: Colours can be customized to match architectural design, window systems, facade palettes, or project-specific colour charts, suitable for villas, commercial buildings, hotels, apartments, and batch project orders.
Color selection for reference only. Slight variations from the physical item may occur.
Slimline aluminium windows are not just about narrow frames. Glass type, thermal break structure, sealing system, drainage design and hardware all affect thermal insulation, safety, weather resistance and final project cost. Projects with higher acoustic requirements can also consider soundproof aluminum window configurations.
Chalco's slimline aluminium windows can be configured as thermal break aluminum windows with insulating Low-E double glazing, PA66GF25 thermal break strips and multi-chamber profile structures to reduce heat transfer across the frame and glass areas while maintaining a sleek appearance.
| Glass option | Best for | Benefit |
| Double glazing | Residential and commercial projects | Basic insulation and comfort |
| Triple glazing | High-performance projects | Better thermal and sound control |
| Low-E glass / Low-E | Energy-saving buildings | Reduces heat transfer |
| Laminated glass | Safety-focused projects | Improves safety and impact resistance |
| Acoustic glass | Hotels, apartments, roadside buildings | Reduces outdoor noise |
| Solar control glass | Hot or sunny areas | Reduces solar heat gain |
| Low-iron glass | Villas and view windows | Clearer glass appearance |
| Low-maintenance glass | Large or hard-to-clean glass | Easier maintenance |
| Decorative glass | Privacy and design areas | Adds privacy or style |
The sealing system uses co-extruded EPDM foam gaskets and multi-point sealing structures to help reduce the entry of rain, wind, dust and outdoor noise, making it suitable for casement windows, high-rise apartments, coastal projects, and exposed outdoor openings.
Depending on opening type, sash size, and security needs, the slimline window system can be fitted with European-standard C-channel concealed hardware, multi-point locks, and various handle options-ensuring clean aesthetics while meeting daily operation and locking requirements.
For bedrooms, kitchens, apartments and areas with high insect activity, slimline aluminium windows can be paired with aluminum window screens and appropriate ventilation solutions to enhance everyday comfort without compromising the primary window design.
For contractors, developers, installers, and distributors, confirming quality before production helps reduce installation errors, configuration mismatches, and delivery disputes.
Chalco supports project verification through drawings, dimensions, glazing, surface finishes, inspection protocols, and delivery documentation.
Final performance and documentation should be confirmed based on the selected system, glazing configuration, project specifications, and final quotation.
Slimline aluminium windows vs uPVC, timber, and steel-look windows
Slimline aluminium windows are best suited for projects requiring narrow frames, large glass areas, and a modern facade aesthetic.
However, the optimal window material depends on architectural style, budget, maintenance expectations, thermal performance goals, and installation conditions.
| Material | Main advantage | Limitation | Best for |
| Slimline aluminium windows | Slim frame, strong structure, modern finish | Cost may be higher than uPVC | Modern homes, villas, apartments, commercial projects |
| uPVC windows | Lower cost, common for residential use | Frame usually looks bulkier | Budget residential replacement |
| Timber windows | Natural warm appearance | Requires more maintenance | Traditional homes, warm interior style |
| Steel windows | Very slim and strong visual style | Heavier, higher cost, more maintenance | Heritage, industrial and restoration projects |
| Steel-look aluminium windows | Steel-window appearance with aluminium practicality | Needs good profile design and finish | Heritage renovation, black frame projects, industrial style |
For modern villas, apartments, and commercial buildings where narrow frames, large glass areas, and low-maintenance finishes are priorities, slimline aluminium windows are typically the better choice.
For heritage renovations or steel-look projects, black slimline aluminium windows can replicate the aesthetic of steel windows while reducing weight and maintenance demands.
Ultra-slim frames offer cleaner sightlines, but pursuing the absolute narrowest profile isn't suitable for every project.
In the following scenarios, final frame dimensions should be confirmed based on drawings, glass weight, wind load, structural requirements, and local building conditions.
For these projects, Chalco can help confirm a more suitable slim-frame aluminium window solution based on opening dimensions, window type, glass configuration, surface finish, hardware, and project environment.
Pricing for slimline aluminium windows depends on size, window type, glazing, profile system, surface finish, hardware, quantity, and delivery requirements.
Please provide rough opening dimensions, window type, glazing specification, colour, quantity, and project location for a more accurate quotation.
Yes. Chalco supplies custom slimline aluminium windows for export and USA projects, with options for size, glass, finish, hardware, packaging, and project documentation.
Slimline aluminium windows are aluminium window systems with narrower visible frames, larger glass areas, cleaner sightlines, and a modern appearance.
Yes. Energy-efficient aluminum windows can be configured with thermal break frames, insulated glass, Low-E glass and multi-seal systems.
Yes. Steel-look slimline aluminium windows can be used for heritage renovation, black frame designs, and traditional glazing layouts.
Sightline depends on the window type, frame depth, sash design, mullion, transom, glass weight, hardware, and installation conditions.
Please provide opening size, window type, quantity, glass option, frame colour, finish, hardware requirements, project location, and drawings if available.
To help us identify the right slim-frame aluminium window system and provide a more accurate quotation, please share the following project details whenever possible.
Please provide window dimensions, opening type, glass configuration, surface finish, and performance requirements, and we can offer a customized quotation for your project.
