A look inside Hello Sun's exhibition at IAB Build Expo 2026 in Dhaka, where its Window Treatment Lab concept brought fabric selection, light control and architectural window treatments into focus.
Hello Sun brought its Window Treatment Lab concept to IAB Build Expo 2026 in Dhaka, placing curtains, blinds and window treatment planning within the wider conversation about architectural interiors.
Held in October at the Bangladesh–China Friendship Conference Center, the expo brought together professionals and businesses connected to architecture, construction and interior design.
Hello Sun's exhibition space featured its branding and window treatment displays. The central idea behind the Window Treatment Lab was that the right curtain or blind begins with an understanding of the space, from daylight and privacy to fabric construction and installation.
Hello Sun at IAB Build Expo 2026
The exhibition gave Hello Sun an opportunity to present its approach to window treatments in a setting focused on Bangladesh's built environment.
At the Hello Sun stall, visitors could see an exhibition space arranged around the brand's window treatment offering. Fabric displays and the presentation area reflected the studio's emphasis on materials, design and finishing details.
For architects, interior designers and homeowners, these are practical considerations. A curtain that works beautifully in one room may be unsuitable for another because of sunlight exposure, window proportions or the way the space is used.
The Window Treatment Lab concept was built around bringing those decisions together.
The Idea Behind the Window Treatment Lab
A window treatment should respond to the room it belongs to.
In a Dhaka apartment, a west-facing living room may need better control over afternoon sunlight. A bedroom facing neighbouring buildings might require greater privacy and darkness. In a contemporary office, managing screen glare could be more important than blocking daylight completely.
Hello Sun's Window Treatment Lab approach considers these requirements before selecting fabric or hardware.
That means looking at the transparency and weight of the material, whether a lining is needed, how the curtain will hang and how the system will operate.
A soft sheer fabric may be appropriate for a living room where natural light is welcome. In a bedroom, a suitable blackout arrangement could offer greater light control. Large or difficult-to-reach windows may benefit from motorised operation.
Each decision affects the finished result.
Why Window Treatments Matter in Architectural Design
Curtains and blinds influence how daylight moves through a room. They also help define privacy, proportions and the relationship between the window and the surrounding interior.
Light Control and Privacy
The amount of daylight a room receives changes throughout the day.
Sheer curtains can soften strong daylight while maintaining a lighter appearance. For rooms requiring greater darkness, blackout curtains offer a different approach.
Privacy needs are equally important. Fabric transparency, window position and the arrangement of curtain layers all influence what can be seen from outside.
Fabric, Colour and Texture
Curtain fabric should work with the room's existing materials.
A plain, matte fabric may suit an understated apartment interior. Textured curtains can add depth to neutral spaces, while the softer surface of velvet introduces a different visual character.
Fabric weight also matters. It influences how the material folds, how much space it occupies when opened and what type of track may be appropriate.
Curtain Headings and Installation
A carefully selected fabric can lose much of its intended effect if the installation is poorly planned.
Curtain length, track placement, fullness and heading style all influence the finished appearance. Ripple folds can create a regular, flowing arrangement, while pinch pleats provide a more tailored finish.
These details are particularly noticeable around large windows and floor-to-ceiling glazing.
Planning Window Treatments with Architects and Interior Designers
For an architect or interior designer, window treatment planning can begin well before a room is ready for curtains.
A recessed curtain track may need to be considered during ceiling design. Large windows require enough stacking space for the fabric when the curtains are open. Motorised systems introduce additional requirements involving tracks, power and operation.
Coordinating these details early makes it easier to align the window treatment with the intended architectural finish.
Hello Sun's consultation process considers fabric selection, lining requirements, curtain configuration and installation planning in relation to the project.
For homeowners, the same approach helps make decisions more understandable. Rather than choosing fabric by colour alone, they can compare options according to the room's sunlight, privacy and everyday needs.
From Fabric Selection to Installation
A successful window treatment depends on decisions made before the fabric is cut.
Stage | What Hello Sun Considers |
|---|---|
Understanding the space | Room purpose, window proportions, sunlight and privacy |
Selecting materials | Fabric transparency, texture, weight, colour and lining |
Planning the system | Curtain heading, tracks, stacking space and operating method |
On-site measurement | Window dimensions, mounting position and fitting requirements |
Tailoring and installation | Agreed specifications, alignment, finish and operation |
A fabric sample may look different once it covers a full-height window. The heading and track can also change how the material falls.
This is why Hello Sun considers fabric and installation together, rather than treating them as separate decisions.
Explore the Hello Sun studio experience to learn more about the consultation and selection process.
Window Treatment Solutions for Different Spaces
The Window Treatment Lab concept covers different ways to respond to a room's needs. Some spaces benefit from layered curtains, while others require compact blinds or a motorised system.
Layered Curtains and Blackout Options
Combining sheer and heavier curtains gives a room more flexibility.
In a living room, sheers can soften daylight while the outer curtains remain open. When additional privacy or darkness is needed, the heavier layer can be closed.
For bedrooms, suitable blackout fabrics and careful installation help reduce incoming light. The final result depends on the fabric, lining and coverage around the window.
Roller and Roman Blinds
Roller blinds suit many contemporary interiors where a compact window covering is preferred.
Roman blinds offer a softer fabric appearance and fold neatly as they are raised.
Choosing between them depends on the window's dimensions, desired light control and the overall interior.
Motorised Curtain Systems
Motorised curtains can make wide, high or frequently used windows easier to operate.
Before choosing a system, it is important to consider the curtain weight, track dimensions, power arrangements and preferred controls.
Motorisation is most useful when it addresses a practical requirement within the room.
What the Window Treatment Lab Means for Dhaka Interiors
Dhaka's residential interiors often bring several window treatment requirements together.
A large apartment window may admit strong afternoon sunlight while also offering a valuable view. Bedrooms may need privacy from neighbouring buildings, and compact rooms may have limited space beside windows for curtain stacking.
There is rarely one fabric or curtain style that addresses every requirement equally well.
The Window Treatment Lab concept encourages a room-by-room approach. By understanding the window, materials and installation requirements, homeowners and designers can make more informed choices.
For Hello Sun, the IAB Build Expo 2026 exhibition offered a setting to bring this specialist approach into the architectural conversation.
More information about the event is available through the official IAB Build Expo website.
Plan Your Window Treatments with Hello Sun
Whether you're designing a new residence, developing an interior project or updating an existing room, window treatments are worth considering early.
Hello Sun helps homeowners, architects and interior designers explore curtain fabrics, blinds, light-control options and installation requirements according to their spaces.
Share your room requirements and window details with the Hello Sun team to discuss suitable options.
