Western Goldfields Kitchen Floors

When Western Goldfields Mine, south of Johannesburg, decided to revamp its numerous kitchens, Sika’s Chad Tosen recommended two high performance products from Sika’s PurCem range for the floors and walls.

Contractor Epoxy Coaters began the first phase of the project in October 2014. Sikafloor-161 was applied as a primer on the deteriorated floors. This economical, two-part, solvent-free, low viscosity epoxy resin provides excellent penetration and bond strength. Easy to apply, with short waiting times, it is suitable for use on normal to strong absorbent substrates.

This primer was followed with a 6mm application of Sikafloor-20N PurCem, a three-part, resin-rich, water-dispersed, smooth trowel grade, polyurethane modified cement and aggregate screed that is suitable for floors subject to heavy loading, abrasion and chemical exposure. Its textured aggregate surface provides medium to heavy profile slip resistance.

The fluid consistency of Sikafloor-20N PurCem requires less labour to install than conventional heavy-duty, modified PU trowel grade screeds. Importantly for this project, which was taking place in a working environment, this product is so fast-curing that foot traffic is possible after only twelve hours and full service after two days.

The walls of the kitchen were coated with a 5mm application of Sikafloor-29N PurCem, a high strength, water-dispersed, polyurethane modified cement and aggregate mortar designed specifically for trowel applications to vertical surfaces. It has a finely textured smooth aggregate appearance, which offers excellent resistance to abrasion, chemical attack and mechanical damage.

Concerning contact with foodstuffs, both of these PurCem products conform to numerous international requirements, and are resistant to a wide range of organic and inorganic acids, alkalis, amines, salts and solvents. Both possess a similar coefficient of thermal expansion to concrete and will retain their physical characteristics through a wide temperature range. Their bond strength is in excess of the tensile strength of concrete i.e. concrete will fail first.

Sikafloor-20N PurCem and Sikafloor-29N PurCem are non-taint, odourless and VOC-free and provide a high mechanical resistance; when subject to impact, they behave plastically so will deform but will not crack or deform. They are jointless coatings that are easily maintained. All of these factors making them the ideal products for a kitchen environment.

Sika will once again be supplying its top quality products for the second phase of this project, which is scheduled to commence in late November and this should be followed by several more kitchen revamps in the next few months.