Aluminium Projected Windows

Smart Ventilation. Clean Lines. Rain or Shine.

Windows must do more than let in light. They must manage ventilation, keep out driving rain, provide security, and look elegant while doing it. Aluminium projected windows achieve all of this with remarkable efficiency.

Hinged at the top or bottom and opening outward, they allow fresh air to circulate even during Uganda’s heavy downpours, making them one of the most practical and popular window choices for homes, offices, and commercial buildings across East Africa.

At Gretarck Limited, our projected window division fabricates and installs precision-engineered aluminium projected windows for every sector.

We use branded aluminium profiles, multi-point locking hardware, and heavy-duty friction stays to deliver windows that operate smoothly, seal tightly, and endure for decades.

Why Choose Gretarck for Projected Windows?

Rain-Safe Ventilation: The outward-opening design shields the opening from rain, allowing airflow even in wet weather.
Branded Profiles & Hardware: We partner with leading system manufacturers for corrosion-resistant aluminium and durable operating mechanisms.
Custom Fabrication: Windows are fabricated to your exact opening dimensions in our workshop for a perfect fit.
Security Built In: Multi-point locking as standard. Secure night-vent positions available.

Aluminium Curtain Walling

Aluminium Partitioning

Aluminium Projected Windows

Aluminium Fixed Glass Installations

Aluminium Sliding Doors and Windows

Our Aluminium Projected Window Process

We follow a meticulous process from measurement to handover.

Phase 1: Site Survey & Measurement

Our technicians visit your site to take precise opening measurements for every window. We assess the structural reveals, check for obstructions, and note any access considerations for higher-level windows.

Phase 2: Window Specification & Design

We help you select the appropriate profile series, opening configuration, glass type, and hardware finish. We advise on the best hinge position, top-hung or bottom-hung based on the window’s location and function.

Phase 3: Fabrication

Window frames and sashes are cut, machined, and assembled in our controlled workshop. Glass is cut to size and processed as specified. Friction stays, hinges, locks, handles, and weather seals are fitted. Every completed window is checked for squareness and operation.

Phase 4: Installation

Our trained installation team delivers the finished windows to your site. Existing windows are carefully removed where this is a replacement project. New frames are fixed into the prepared openings with appropriate fixings and sealed around the perimeter.

Phase 5: Sealing & Finishing

We apply internal and external perimeter sealants for a weather-tight installation. We check every window for smooth operation, correct closure, and complete weather sealing. Any making good to surrounding plaster or render is completed.

Phase 6: Handover & Care Guide

We demonstrate the operation and locking of each window and provide a written care and maintenance guide. Manufacturer warranties are registered and handed over.

Our Aluminium Projected Window Services

Top-Hung Projected Windows

Top-hung projected windows are hinged along the top edge and open outward from the bottom. They are the most popular projected window type, particularly for residential applications.

Bedroom Ventilation: Top-hung windows provide gentle, draught-free ventilation at night. They can be left partially open during rain without water entering the room.
Living Area Windows: Large top-hung units that flood living spaces with light and allow controlled fresh air intake. They pair beautifully with fixed glazing panels for a contemporary look.
Kitchen Windows: Top-hung windows positioned above worktops provide ventilation without occupying valuable wall space inside the kitchen. They open outward, so they never interfere with taps, appliances, or work surfaces.
Bathroom Windows: Privacy is maintained while allowing steam and moisture to escape. The outward-opening design prevents water ingress during showering.
High-Level Windows: Top-hung windows installed high on walls for light and ventilation where reach is limited. We can supply pole-operated or motorised opening mechanisms for inaccessible locations.

Benefits of top-hung projected windows:

Rain-safe ventilation. The open sash acts as an awning, shielding the opening.
Excellent air circulation with minimal draught at occupant level.
Space-saving. No inward projection into the room.
Easy to clean from inside when the correct friction stays are specified.

Bottom-Hung Projected Windows

Bottom-hung projected windows are hinged along the bottom edge and open inward from the top, or outward depending on the design. They are specified for specific functional requirements.

Stairwell Windows: Bottom-hung inward-opening windows installed at high level in stairwells. The bottom hinge allows safe cleaning access from inside the building.
High-Level Ventilation: Bottom-hung outward-opening windows installed high on factory or warehouse walls to release hot air and fumes. They can be operated by pole or motorised actuator.
Smoke Ventilation Windows: Bottom-hung outward-opening windows integrated into smoke ventilation systems for staircases and circulation spaces. We install compatible actuators and control systems.
Accessible Opening Windows: Bottom-hung inward-opening designs that allow cleaning and maintenance from inside the building, essential for upper floors without external access.

Benefits of bottom-hung projected windows:

Safe cleaning access from inside when inward-opening.
Effective smoke and hot air exhaust when installed at high level.
Can be automated for remote operation.

Commercial Projected Window Installations

Commercial buildings require windows that perform reliably, meet safety standards, and integrate with building management systems.

Office Ventilation Banks: Multiple projected windows installed in a ribbon across an office facade, providing natural ventilation to the entire floor plate. We coordinate opening sequences for balanced airflow.
Corridor & Staircase Ventilation: Projected windows in circulation spaces that provide natural smoke ventilation in compliance with fire safety requirements. We install fire-rated actuators and control panels.
School & Institution Windows: Durable, safe projected windows for classrooms and corridors. Restrictor stays can be fitted to limit the initial opening for child safety.
Hospitality Windows: Guest room windows in hotels and lodges that provide fresh air while maintaining security. Night-vent locking positions allow partial opening with the lock engaged.

Our commercial projected window features:

Robust, heavy-duty friction stays rated for frequent use.
Compatibility with building management systems for automated operation.
Fire-rated actuator options for smoke ventilation.
Restrictor stays for controlled opening in public areas.

Industrial Projected Windows

Industrial environments demand windows that are tough, functional, and often automated.

Factory High-Level Ventilation: Bottom-hung outward-opening windows installed at eaves or high level on factory walls. They exhaust hot air, fumes, and stale air. We install manual pole operation or electric actuators.
Warehouse Natural Ventilation: Top-hung or bottom-hung windows providing airflow through large warehouse spaces, reducing reliance on mechanical ventilation.
Plant Room Ventilation: Louvred or glazed projected windows for ventilation of mechanical and electrical plant rooms.
Agricultural Building Windows: Corrosion-resistant aluminium projected windows for agricultural processing and storage facilities.

Our industrial projected window features:

Heavy-duty aluminium sections.
Corrosion-resistant hardware.
Motorised operation with remote control or automated environmental sensors.
Compatibility with industrial louvre and mesh systems.

Projected Windows with Integrated Features

We can incorporate several additional features into your projected windows.

Mosquito Mesh Integration: Aluminium-framed mosquito mesh screens fitted to the internal or external face of the window. The mesh allows ventilation while keeping insects out. Fixed or hinged mesh panels available for cleaning access.
Security Grilles: Internal or external aluminium grilles for ground-floor and vulnerable windows. Grilles can be fixed or hinged and lockable.
Child Safety Restrictors: Friction stay restrictors that limit the initial opening width, preventing children from falling. Override mechanism for full opening when required.
Night Vent Position: A lockable, partially open position that allows secure ventilation while the building is unoccupied or occupants are asleep.
Concealed Hinges: For a cleaner aesthetic, we offer concealed hinge options on premium projected window systems.

Projected Windows Across Sectors

Residential Projected Windows

We supply and install projected windows for family homes, apartments, and luxury villas across Uganda. Our residential focus is on comfortable ventilation, security, ease of cleaning, and an appearance that complements the architectural style. We offer a range of frame colours and finishes to match your interior and exterior design scheme.

Commercial Projected Windows

Office blocks, retail units, banking halls, and institutional buildings benefit from the ventilation performance and clean aesthetics of aluminium projected windows. We deliver commercial installations on programme, often as part of a broader aluminium works package including curtain walling and partitioning.

Hospitality Projected Windows

Hotels and lodges need guest room windows that are secure, easy to operate, and allow fresh air without compromising the guest experience. Our hotel projected windows include night-vent positions, smooth operation, and finishes that match the interior decor.

Industrial Projected Windows

Factory and warehouse windows that work hard. We install robust, often automated, projected windows that manage ventilation, exhaust, and smoke clearance in demanding industrial environments.

Design Options for Projected Windows

Configuration Options

Single Sash: One opening sash within a fixed frame. The most common configuration for standard window openings.
Double Sash: Two opening sashes within a single frame, either side-hung or a combination of fixed and projected sashes.
Fixed-Projected Combinations: A single frame combining a large fixed pane with one or two projected opening sashes. Maximises light and view while providing ventilation where needed.
Ribbon Windows: A continuous band of projected windows across a facade, separated by mullions. Creates a strong horizontal architectural line.

Frame Finish Options

Powder-Coated Finishes: Durable colour coatings available in standard RAL colours, including white, black, grey, bronze, and custom corporate colours.
Anodised Finishes: Natural metallic appearance with excellent durability. Available in clear, bronze, and black.
Timber-Effect Finishes: Powder coating technology replicating wood grain on aluminium, providing natural warmth without maintenance.

Glazing Options

Clear Float Glass: Standard transparency for general use.
Tinted Glass: Solar control tints in bronze, grey, green, or blue.
Low-E Glass: Thermal insulation coating for improved energy efficiency.
Toughened Safety Glass: Heat-treated for strength and safety. Required for low-level glazing and doors.
Laminated Glass: Security and acoustic benefits. Recommended for ground-floor windows.
Obscure Glass: Frosted or patterned for privacy in bathrooms and street-facing windows.

Performance Features of Our Projected Windows

Weather Performance

Projected windows are inherently weather-resistant due to their outward-opening design. Combined with our high-performance weather seals and integrated drainage channels within the aluminium frame, our windows achieve excellent water-tightness and air permeability ratings. Driving rain is deflected by the open sash, allowing ventilation during wet weather.

Thermal Performance

Our aluminium profiles incorporate thermal breaks—insulating barriers between the inner and outer frame sections. Combined with appropriate glazing, our thermally broken projected windows significantly reduce heat transfer, keeping interiors cooler and reducing air conditioning energy consumption.

Acoustic Performance

For properties near busy roads, markets, or other noise sources, we offer acoustic laminated glass and enhanced perimeter seals to reduce external noise intrusion while still allowing ventilation when windows are open.

Security

Multi-point locking is standard on our projected windows. The locking points engage at multiple positions around the sash, not just at the handle. This provides excellent resistance to forced entry. Laminated glass adds further security by holding the pane together even if broken.

Frequently Asked Questions

What is the difference between top-hung and bottom-hung projected windows?

Top-hung windows are hinged at the top and open outward from the bottom. They are the most common type, providing rain-safe ventilation. Bottom-hung windows are hinged at the bottom and open inward or outward from the top. They are often used for high-level ventilation, smoke exhaust, or where cleaning access from inside is required.

Can projected windows be used on upper floors?

Yes. Top-hung projected windows are an excellent choice for upper floors. When fitted with easy-clean friction stays, the sash can be released and swung inward for cleaning from inside the room.

Are projected windows secure?

Yes. We fit multi-point locking as standard. The outward-opening design is inherently resistant to being forced inward. For ground-floor and accessible windows, we recommend laminated glass for additional security.

Do you supply mosquito mesh screens for projected windows?

Yes. We supply and fit durable aluminium-framed mosquito mesh screens for all our projected windows. Screens can be fixed or hinged to allow window operation and cleaning.

How do I clean the outside of a projected window on an upper floor?

Our projected windows are fitted with easy-clean friction stays that allow the sash to be released and pivoted inward for cleaning. This means the exterior glass can be cleaned safely from inside the building.

What colours are available for the aluminium frames?

We offer a wide range of powder-coated RAL colours, anodised finishes, and timber-effect finishes. We can match most architectural colour schemes. Standard white, black, and grey are always available.

Do you provide a warranty?

Yes. We provide a workmanship warranty on our installation. Manufacturer warranties apply to the aluminium profiles, glass, hardware, friction stays, and seals. Specific warranty terms are detailed in your contract.

Ready for Windows That Work in Every Weather?

Whether you need a single bathroom window replaced or a complete set of projected windows for a new commercial building, Gretarck Limited delivers quality, performance, and value.

Let’s discuss your projected window project:

Book a Site Survey: Have our technicians measure your openings and discuss ventilation requirements.
Request a Quotation: Receive a detailed, itemised quotation covering profiles, glass, hardware, and installation.
Visit Our Office: Explore frame finishes, glass samples, and hardware options at our Cham Towers showroom.

Contact Us

Email: sales@gretarckltd.com
Phone: +(256) 742786418
Working Hours: Monday – Friday, 08:00 hrs – 17:00 hrs
Address: P.O.Box 106336, Cham Towers Building, First Floor Room No. 158, Kampala, Uganda.