The curved roofline is the first thing you read in the exterior view: a rounded cap above a large glazed opening, with horizontal metal slats set just in front of the glass. For the bedrooms below that roof, two bespoke louvre panels were designed to manage shading and blackout. Their shape follows the same radius as the cap, so the panel edges do not fight the curve; they track it.

A curved cap answered with straight slats

The project works because of that tension between form and line. The roof is circular in profile, while the shading elements are built as a horizontal slat system. Seen from outside, the slats introduce a clear band across the opening and reinforce the rhythm of the glass below. The panel geometry was made to fit the rounded roof without breaking the reading of the upper volume. It is a restrained move, but a precise one.

Inside the two first-floor bedrooms, the brief was straightforward: control daylight and provide blackout when needed. The panels do that without adding visual clutter to the frame. Instead of separate equipment or surface-mounted parts, the mechanism sits inside the construction. The result is a clean edge around the opening, with the curve of the cap still visible above the slatted screen.

Concealed mechanics inside the frame

Motor and drive components are fully hidden within the frame of the panels. That matters in a detail like this, where the outside face is already working hard against the curve of the roof. Nothing breaks the reading of the slats or interrupts the outline of the panel. The visible parts stay limited to the metal blades and the frame that holds them. For a façade detail with this much shape, that simplicity is what lets it hold together.

The louvers rotate through 180 degrees, which gives the system a wider range than a fixed screen. The angle can be opened to admit light or turned to close down the view and reduce brightness. Because the slats are controlled as part of the house’s central smart home control, they can be adjusted without drawing attention to the hardware behind them. The visible exterior remains calm and legible, even though the movement behind it is active.

Two panels, one radius

Only two panels were needed, both made to the same curve as the roof above. That repetition gives the opening a measured order. From a front or corner view, the rounded bay louvres read as a pair rather than as separate objects added later. The radius ties them to the building shell, while the horizontal blades keep the composition visually light against the masonry and glass.

There is a practical side to that same curve. A bespoke panel that follows the roof line is easier to read as part of the architecture, not as an attachment. The panel edges sit in relation to the cap rather than competing with it. That is especially visible where the curved upper volume meets the straight lines of the glazing below, and where the dark window profiles set a sharper boundary under the roof.

Light, shade and the exterior reading

The exterior image shows how the system sits above the large glass area: metal slats, dark frames and masonry forming a compact composition beneath the rounded roof. The louvres do not dominate the façade; they sit in front of the opening and add a controlled horizontal layer. In daytime, that layer will change with the angle of the blades. At night, the same panels can close down for blackout, leaving the curved cap as the stronger form.

That combination of visibility and concealment is what defines the project. The mechanism is hidden, the movement is active, and the shape remains tied to the building. Seen from outside, the rounded roof and the slatted screen form a clear architectural pairing. Seen from the bedrooms, the panels answer a simple interior need with an exterior detail that is precisely fitted to the curve above.

Where the detail meets the room

Because the panels are tied to the first-floor rooms under the cap, the solution is not just about the outside view. It begins at the bedroom window, where daylight has to be managed without losing the read of the opening. The slats can turn through their full range, giving the rooms different levels of shade over the course of the day. When closed down, they support blackout; when opened, they let the glass read more openly from the outside.

That shifting position is important in a house where the rounded roof is such a strong marker. A fixed screen would have flattened the opening. Here, the moving blades let the light change while the curved cap stays present in the elevation. It is a small piece of engineering, but the effect is visible immediately in the relation between roof, frame and glass.

A louvered facade detail built for the curve

The finished louvered facade detail sits somewhere between screen and opening control. It is not treated as decoration, and it is not hidden away as a purely technical addition. The slatted panels are part of the exterior composition, aligned to the roof radius and sized for the two bedroom spaces beneath. That is why the drawing of the curve matters as much as the movement of the blades.

In the end, the project is defined by a limited set of elements: a rounded roof, a glass opening, two bespoke panels, concealed motors and a controllable slat movement. Each part is visible in the right place. Together they shape a façade detail that responds directly to the rooms behind it, while keeping the exterior line clear and readable.