TAL develops new mosaic adhesive for 300 on Kent

TAL recently developed a customised ultra-white mosaic adhesive to install colourful glass mosaic tiles at 300 on Kent, the new office building of the JD Group’s Financial Services business in Randburg.

The four storey building features a different colour scheme on each floor and this colour scheme is replicated in the bathrooms through the use of colourful floor-to-ceiling glass mosaics that are locally manufactured.

Glass products are very brittle and rigid and therefore require a flexible high-strength adhesive system. “Failure to use a flexible adhesive system will result in movement being transferred directly to the glass,” says Sharon Margon, technical adviser at TAL.

Glass mosaics, being reflective and translucent, will immediately show defects that might not be as visible with opaque tiles, such as ceramic or porcelain. Glass tiles should be installed over a clean, sound and flat surface.

Also, due to the translucent nature of glass tiles, a light-coloured adhesive is recommended for fixing the tiles as the aesthetic finish of the installation could be adversely affected when using a dark-coloured adhesive, such as a grey adhesive.

“For this project a special ultra-white mosaic adhesive was developed to install the glass mosaics thereby ensuring that the aesthetics of the mosaics were highlighted,” says TAL’s technical representative, Schalk Pelzer. 

TAL Mosaicflex Ultra White is a rapid-setting, flexible, high-strength and water resistant adhesive that allows the mosaic tiles’ bright colours to come to the fore.

“We’re able to develop custom-built products to meet project specifications. We tested the new adhesive according to TAL’s standards to ensure that it’s free from defects and fit for design purposes,” adds Pelzer.

The 300x300mm mosaic sheets replicate the colour scheme of each floor. The ground floor is green, the first floor is red, the second yellow and the third floor is blue.

“It was a challenge installing the mosaic as the glass tiles have a faded look, so they’re darker at floor level and fade towards the ceiling. The tiles are numbered and we had to adhere to the exact pattern to make the tiles fit together like puzzle pieces,” says Alex Henery of Exquisite Tiling.

TAL also supplied TAL Goldstar 12 and TAL Bond to install porcelain floor and wall tiles imported from Italy.

TAL Goldstar 12 is a quick-setting, high-strength adhesive suitable for fixing ceramic, porcelain, granite and dark-coloured marble tiles to walls and floors in interior and exterior installations. TAL Bond, a modified latex additive, was used as a total water replacement in the TAL Goldstar 12 mix to improve the flexibility and water-resistance of the tile adhesive.

Inside the building, the floors, lift walls and focus walls feature 600x600mm porcelain tiles in different colours. The lobby walls were tiled with 300x600mm porcelain tiles with white and black stripes and aluminium trimming to create a focal point, while the lobby floor features 600x600mm grey porcelain tiles mixed with 600x600mm black matt porcelain inlays.

Each level has a separate pause area, called the Chill Room, with couches where employees can relax or have their lunch. The Chill Rooms’ kitchenettes were tiled with 300x300mm porcelain tiles in different colours depending on the colour scheme of the particular level.

The exterior of the building features striking 90-degree steel beams in a bright green and these sharp lines are replicated on the tiled floor of the main entrance and the exterior wall cladding.
The main entrance was tiled with a gray 600x600mm porcelain tile with a 600x150mm rustic green inlay to replicate the steel beams and straight lines on the outside walls of the building.

The exterior feature wall was tiled with a 600x600mm striped black porcelain tile with polished porcelain inserts. Mechanical fixing was employed for the exterior wall installation. “Mechanical support is very important with cladding installations and is installed at two metre intervals,” says Henery. The main aim of the support is to create a point for the tiles to rest on while the adhesive is curing. “In the event that a tile should fail, the mechanical support will prevent failure of an entire panel as the failure will be isolated within that particular two metres,” says Henery.

TAL products are manufactured locally and developed and tested to suit the South African climate conditions. The TAL Warranty Programme offers a 10-year warranty on any tiling installation, provided a Materials and Methods specification is issued by TAL for the project, TAL products are used in strict accordance with the specification and the installation is undertaken by a TAL Registered Tiler and monitored by TAL.

TAL is ISO 9001:2008 quality management system certified and its products are designed, manufactured and tested to TAL standards, assuring customers that products will perform to specification.

All TAL products used on this project conform to the VOC requirements stipulated by the Green Building Council of South Africa.

For more information visit www.tal.co.za or contact the TAL Technical Advisory Service on 0860 000 (TAL) 825.