Uptown Tower Dubai

Located in the highly desirable Jumeirah Lake Towers development, it has been designed to make a statement both inside and out with an angled curtain wall façade system redolent of a faceted diamond, creating stunning aesthetics whilst offering inhabitants floor-to-ceiling views of Dubai’s waterfront.  

With multiple purposes set across multiple storeys, ensuring high levels of fire safety was paramount, including code-compliant passive fire protection for the façade.

Arvind Kumar, Business Development Manager for Technal stated:

The tower’s elevations are created from a unitised curtain wall system, featuring non-fire rated extruded aluminium mullions and transoms with double-glazed glass panels installed at different angles to create the faceted effect.  

To ensure compliance with the UAE Fire and Life Safety Code, this external wall system needed to be protected at each floor level with a passive fire protection solution that not only prevented floor-to-floor fire spread, with a perimeter fire seal that achieved a 2 hour minimum (EI 120 or FT 120) fire rating, but that also provided a 1 hour fire resistance to the spandrel panel and exposed mullions.

Main contractors, BESIX, chose to specify a one-part, dry-fix solution from Siderise over a two-part wet-apply system as sourcing the full spandrel protection system from a single manufacturer helped to both simplify the ordering and delivery process and ensure that every element was compatible with the whole system having been tested as a holistic solution. 

The specified Siderise solution was based on an EN 1364-4 tested and certified system that comprised a stick curtain wall— CW-FS Firestop with two layers of CW-FB Fireboard over the mullions. Achieving a 3 hour (EI 180) result, this was compliant with the UAE Fire and Life Safety Code.

However, as detailed above, whilst the perimeter fire barrier was required to provide at least 2 hours fire resistance, the project’s specification required the spandrel to offer 1 hour. As a perimeter fire seal and fire barrier cannot be tested for different amounts of time in the same test, Siderise’s R&D Director carried out an Engineering Judgment (EJ) for reducing the CW-FB Fireboard within the solution from two layers to one in a way which was in line with the EN 1364-4 tested system (EFR-17-U-000353) and Siderise Certifire certification CF 563 requirements.

The protected spandrel— now using a single layer of CW-FB Fireboard— was deemed sufficient for protecting the spandrel for 1 hour, while Siderise CW-FS Firestop provided the 2 hours fire rating necessary for the floor-to-floor compartmentation.

The project also used unique brackets that were face mounted and therefore required further protection against fire. To fulfil this requirement, CW-FS Firestop was installed under and around the brackets and additional CW-FB Fireboard was fixed to the underside of the steel closer at the bracket location to enhance the insulation and integrity performance of the bracket.

CW-FS Firestop was also used to provide vertical compartmentation in the system.

Installation and inspection

The façade work commenced in December 2020 and completed in July 2022, with 8,500 glass panels installed in total. To ensure the Siderise solutions installed on each floor will achieve its expected performance in the event of a fire, it is imperative that they were installed in the way defined in the test report that informed its specification.

Siderise technical engineers worked closely with BESIX’s contractors, providing onsite training and guidance on the installation of the full spandrel protection system. The quality of the installation has then been verified and documented through onsite inspections. These included detailed checks of the performance-critical aspects of the installation such as product direction (vertical fibre orientation), compression, and tight jointing.