Wasl Tower Takes Its Angle From a Single Cladding Panel

Architecture · Dubai

Reading time: 10 min

The diagonal that runs the full height of Wasl Tower looks like a sculptural flourish. It is actually a dimension. The angle was taken from the corner of a rectangle four metres high and 900 millimetres wide, which is one floor of the building against one panel of its cladding, and almost everything else about the facade follows from that one rectangle.

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Wasl Tower rises 302 metres off Sheikh Zayed Road and carries what is described as one of the tallest ceramic facades in the world. From a car it reads as a single gesture: a lean, a twist, and a fine diagonal weave of terracotta running the whole height of the building and shifting as you pass it. The lean comes from UNStudio, who took the idea from contrapposto, the stance in classical sculpture where a figure puts its weight on one leg and everything above has to adjust. The weave is a different kind of decision altogether.

The diagonal sits at 12.8 degrees, and the design team arrived at that figure by taking the corner of a rectangle formed by a typical four metre floor to floor height and a 900 millimetre facade module. In other words the signature angle of a 302 metre tower is the diagonal of one cladding panel against one storey. The pattern is not drawn on the building. It is generated by the building’s own dimensions, which is why it holds together at every scale from the car park ramp to the skyline.

What a terracotta fin is actually made of

The unit on the wall is not a tile and not a blade. It is a composite prefabricated box, elongated and lens shaped in plan, ranging from two to six metres in height depending on where it sits. The visible body is built from extruded hollow core terracotta, mechanically fastened to a composite steel and aluminium carrier that takes the wind load and the self weight back to the frame. The ceramic does the looking; the metal does the holding.

That split matters on a building this tall. Terracotta is excellent at surviving ultraviolet light, thermal cycling and airborne dust without fading or chalking, which is most of what a Gulf facade has to resist, and it is poor at spanning. Hollow coring it keeps the weight down and gives the extrusion the stiffness it needs between fixings. Each unit then clips to brackets within a modular facade system engineered for fine adjustment, which is how a twisting geometry gets built to tolerance rather than fought into place.

The glaze is the part that makes the building change through the day. The ceramic is fired with a metallic glaze, hand finished for a pearlescent effect, and the result is a surface that is bronze at noon, properly gold for about forty minutes either side of sunset, and almost black against a lit sky. It is a lot of character to get out of a fired clay extrusion, and it is the reason the tower photographs so differently depending on the hour.

The oldest cladding material, used as a rainscreen

Fired clay is the longest serving facade material there is, and a ventilated terracotta rainscreen is a fairly recent way of using it. The principle is straightforward: hang a porous outer leaf clear of the waterproof line, let it take the sun and the sand, and let the gap behind it do the thermal work. What makes it suit a Gulf tower is the combination of properties. Terracotta holds its colour under ultraviolet light in a way that painted metal and most polymers do not, it is dimensionally stable through a daily temperature swing that can run to twenty degrees, it will not corrode in salt laden air coming off the Gulf, and if a unit is damaged it can be unclipped and replaced without touching the weatherline behind it.

The economics follow the physics. A facade that keeps its appearance without recoating is a facade with a very long maintenance cycle, and on a 302 metre tower the cost of access is a larger number than the cost of the material. Specifying a fired ceramic here is a decision about the next forty years rather than the opening photographs.

The south face of Wasl Tower is packed tighter than the north

This is the part that repays standing still and looking. The fins are not evenly spaced. On the south elevation they sit at 1,800 millimetre centres and the facade reads as roughly 60 per cent solid to 40 per cent open. On the north elevation they move out to 2,700 millimetre centres and the ratio inverts to about 40 per cent solid and 60 per cent open. The envelope gets denser where the sun is hardest and opens up where it is not.

Both of those figures are multiples of the same 900 millimetre module that produced the 12.8 degree angle: fins every two modules on the south, every three on the north. One dimension therefore sets the geometry of the pattern, the spacing of the units and the solidity gradient across the building. Solar studies were run across the full envelope and each element calibrated to its own orientation, so the gradient is continuous rather than stepped, but the underlying grid never changes. It is a parametric facade with a very small number of actual rules.

The effect from the street is that the tower appears to thicken and thin as you move around it, which is the same trick the twist is playing at a larger scale. Shading and sculpture turn out to be the same operation performed at two different sizes.

The cavity does the second half of the work

Behind the ceramic screen sits a unitised curtain wall, and between the two runs a ventilated cavity. Air moving through that gap carries away the heat the terracotta has absorbed, so the fins are not simply parking solar gain against the glass. The detail that makes this work is easy to miss in a photograph: aluminium grilles are integrated into the fin units themselves, visible as a fine perforated texture on the flanks of each one, and they are what lets the air through rather than around.

Across the whole envelope the system is reported to cut cooling loads by around 10 per cent. That is the right order of magnitude to be believable and it is a real number on a building of 167,733 square metres. Shading, ventilation and glare control are being done by the same component, and the component is also the architecture, which is the economy that makes the facade worth writing about.

Maintenance was designed in rather than bolted on. A building maintenance unit is built into the parapet, so the machine that cleans and inspects a 302 metre ceramic wall does not sit on the roof as an afterthought.

Building a geometry where no two panels match

A twisting envelope creates a problem that a flat one does not. If the plan rotates as the building rises, then strictly no two floors present the same face, and a facade made of identical repeated units will not sit flush against it. The system here resolves that in two ways. The units are prefabricated as boxes of two to six metres, so a single element can absorb the rotation that would otherwise have to be taken in a joint, and the brackets they hang from are engineered for precise adjustment in three directions, so the setting out can be corrected on site rather than relying on the frame being perfect.

That is the quiet discipline behind the whole facade. The 900 millimetre module keeps the number of distinct components down, the parametric model varies their angle and spacing rather than their family, and the adjustable bracket absorbs what is left. A tower that looks like it was individually sculpted is in fact a small kit of parts installed with a lot of care.

Why the tower leans

Contrapposto is a useful borrowing because it describes a shift of weight rather than a shape. UNStudio, led by Ben van Berkel and Gerard Loozekoot, use the twist to give the tower a different silhouette from every approach, which on a site read mostly at speed from a twelve lane road is a practical decision as much as a formal one. The facade was developed as a full 360 degree system responding to solar orientation, and a building that turns through its height presents a continuously changing angle to the sun, so the two moves support each other.

Werner Sobek carried the structural, facade and services engineering. The frame uses post tensioned floor slabs, hybrid concrete columns and outriggers at the mechanical levels, an approach the team describe as new to Dubai, and it took around 3,000 cubic metres of concrete out of the building. Arup designed the lighting, programmed so the tower appears to breathe rather than simply switch on, and U+A Architects acted as architect of record. The ceramic was produced by Jiangsu CN Eco-Materials, and Green4Cities handled the landscape.

What the skin is wrapped around

Wasl Tower is a vertical mixed use stack rather than a single use tower: hotel, residences, offices, wellness floors, event space, restaurants and elevated public terraces, with separate lift groups so the different populations are not queueing together. Mandarin Oriental Downtown, Dubai opened inside it on 7 November 2025 with 259 rooms and suites, interiors by G.A Group, and 224 residences above. We covered the hotel itself in detail when it opened, in Mandarin Oriental Downtown Dubai: a hotel inside a tower that leans like a statue.

One commission inside is worth noting here because it reads the facade back into the building. Mandarin Oriental gives every property a signature fan, and the Dubai one was made by the Emirati artist Zeinab Alhashemi from eleven shades of camel hide with bronze electroplated rods and industrial bolts. She chose the eleven tones to track the facade’s shift from golden daylight into evening. Her own account of it is direct: « camel hide is a material of this land, and the façade of Wasl Tower is a material of this moment ». Alhashemi is also showing The Nut and Bolt at the first Frieze Sculpture Abu Dhabi this November.

Where it sits in the city

The tower stands on Sheikh Zayed Road in Downtown Dubai, within sight of the Burj Khalifa, and the podium is the part most people will meet first: a low banded mass with deeply curved soffits in anodised gold, and the ceramic screen carried down over it so the material reads continuously from pavement to parapet. Completion was reached in 2025 and the client is wasl, which is also how the tower got its name.

For a reader following how envelopes are being used to manage desert light, this belongs beside the dome at Louvre Abu Dhabi, which filters sun through eight stacked layers of cladding rather than shading a wall, and Museum of the Future, where the skin and the structure are the same object. There is a related argument about graded envelopes in Dar al Funoon Abu Dhabi, where the layering runs from glass to mesh to solid shell.

Frequently asked questions

Final thoughts

What makes this facade worth studying is how little it needed to invent. One module, 900 millimetres wide, set against one floor height of four metres, produces an angle. That angle produces a pattern. Multiples of the same module produce the spacing, and the spacing produces the solar gradient. A ventilated cavity and a perforated flank do the thermal work, and an adjustable bracket absorbs the twist.

The result is a tower that looks carved and is in fact assembled, from a kit of parts small enough to manufacture consistently and varied enough to respond to every orientation it turns through. Wasl Tower is a good argument for the idea that the most convincing environmental architecture is usually the architecture you can also read as a drawing.